How to control fan speed in windows xp,discount floor fans reviews,whirlpool wf143sm1 hv 14-inch orbital oscillating pedestal fan - PDF Books

18.04.2015

Even though the card targets the gaming enthusiast market, the software that is bundled along does not include any games whatsoever.
Of course, the cables for connecting the graphics card with external devices couldn't be missing. The memory chips are from Samsung and are located on the front of the card, covered by heatsinks.
Unfortunately, in order to support the cooling system, the Gainward card acquires two major drawbacks. The second drawback is that the card also hogs the space over PCI slot below the AGP slot of your motherboard.
As you can see in the picture above, the Gainward 6800GT GLH offers 2 DVI outputs for direct connectivity with a TFT monitor and one for S-Video input. A large number of trees with their branches swinging separately, and dense vegetation being dynamically distributed according to the camera movements, make this test the most demanding of the three. This is basically the geometric mean of the total frames in each game multiplied by 250, which means that all game tests are on an equal par. 3D Mark is a widely used and accepted benchmark that stresses the DirectX performance of a VGA card.
This test also uses post-processing effects, such as Depth of Field and Bloom effects which are widely used in today's game cut scene sequences. Mother nature represents the level of effects and realism that are possible using 2.0 vertex and pixel shaders, plus some other features that DirectX 9 offers.
If you test your machine with 3DMark, you can post the results at 3DMark's online results page. Since the majority of today's applications and games are compatible with DirectX 9, the need for benchmark applications that use DX 9 has been stepped up.
The Aquamark Triscore comprises 3 values: the overall system performance, the performance of the graphics system and the CPU performance.
CodeCreatures is a synthetic 3D benchmark that is a good reference for VGA performance comparison. The benchmark plays a photo-realistic nature scene and calculates the performance of the graphics adapter by measuring the fps that it can display at 1024x768, 1280x1024 and 1600x1200 pixels resolutions. The codecreatures number is the resulting score of the total benchmarking process and is basically the geometric mean of the three framerates multiplied by 100.
Regarding the storyline, the player again picks up the crowbar of research scientist Gordon Freeman, who finds himself on an alien-infested Earth being picked to the bone, its resources depleted, its populace dwindling. Characters - Advanced facial animation system delivers the most sophisticated in-game characters ever seen. Physics - From pebbles to water to 2-ton trucks respond as expected, as they obey the laws of mass, friction, gravity, and buoyancy. To measure performance we used the Video Stress Test(VST) that is available in the CounterStrike:Source beta available through Steam.
Even though Half Life 2 was supposed to be an Nvidia game, the 6800GT from Gainward seems to have no problems bringing the best framerate we've ever seen in the Video Stress Test.
All the results point out that as long as your CPU and memory can handle half life 2's Source engine this video card won't stand in your way in terms of performance..
Activision made it's miracle again with Doom 3 which is said to be the best-looking game ever, thanks to the brand-new OpenGL graphics engine used to generate its convincingly lifelike, densely atmospheric, and surprisingly expansive environments.
To measure performance on the game we used the timedemo demo1 command from the console (Alt+Ctrl+~).
The 6800GT was promoted as the perfect choice for this game and our benchmarks prove this true. Farcry is an awesome First Person Shooter (FPS) based on a last generation 3D engine named as CryEngine.
A great advantage and strong point of the CryEngine is its physics system which supports character inverse kinematics, vehicles, rigid bodies, liquid, rag doll, cloth and body effects. With an integrated shader system and a massive terrain which maximizes the view distance to 2km, these features make Farcry a perfect action game and also a referable benchmark to speak of. The resolutions we run the demo in are as follows: 800x600, 1024x768, 1280x1024 and 1600x1200. The drop is more than 50% as the lighting is very intensive for the graphics card to handle. There are 12 different types of HDR rendering you can set with r_HDRrendering and you can also set the amount of lighting using the r_HDRlevel command. Medal of Honor Pacific Assault puts you in the boots of a WWII soldier in the Pacific Theater of Operations. To record performance of this game we used fraps and played around for a minute in the first stage of the demo.
Even though the performance difference between the cards is imminent, the 6800GT couldn't produce more than 84 fps at the lowest possible detail settings.
As we couldn't set any AntiAliasing at this point, we will just present the plain results until we get the full game version. The game makes severe use of Pixel Shader 1.1 instructions, the bloom effect and stencil shadows to achieve a wonderful result in your screen.
In the game you play the part of Master Thief Garrett who is back to rule out any evil forces using his unique stealth abilities. The X300 and X600XT are nothing but a bad joke when comparing them with the 6800GT powered Gainward card.
For all you racing fans out there, this test is for you and will represent the Racing game category in our benchmarks. To measure performance on the game we used fraps to get the average fps of the whole 8th stage of UK which is actually the only stage you get to play on the demo. For our benchmarks we used the highest possible settings on the first mission of the single player game and moved around the camera to get an average framerate using fraps. No matter your graphics card, there comes a time in your computer's life when it can no longer cope with the latest technology the ever so popular games use.
When we click on performance, once the ExperTool overclocking program starts, we are presented with the following screen.
On the left, there's a list of options for tweaking your Gainward card as in the tray menu we saw a bit earlier. As the card is built for the purposes of overclocking so it will reach the 6800 Ultra's values without any risks, we immediately clicked on the Enhanced Mode Settings as advised in the manual. Through ExprerTool, you can also set the fan speeds in case you're worried about the card overheating.
For the record, the maximum values you can set the clock speeds at are 420MHz for the core and 1300MHz for memory. When it comes to the card's value for money we have to consider, "Is it really worth picking this card instead of a plain 6800GT"? I made this project because I wanted a way to automatically control the speed of a DC fan according to the temperature read by a LM35 sensor. I used an LCD shield to display the current temperature and speed of the fan, but you can use the circuit without the LCD display. As you can see in the sketch on the first line I included the LiquidCrystal library (header) that includes useful functions to use when an LCD is connected to the Arduino board. The most important part is to set the variables tempMin and tempMax with your desired values. We store the temperature value in the temp variable and then use some if() functions to check if temp is lower than tempMin and if so let the fan OFF (LOW). The fanLCD re-maps the temp to allow the display of fanSpeed in a 0 to 100% range so you can say that the speed of the fan is directly dependent of the LM35’s temperature.
In the next project I will make a temperature protection circuit that will turn off the power of a equipment when its temperature has reached a certain value. Well i have a problem with the BD139 that the fan is turned on at full speed when i plug in the battery and arduino is in off condition. What if i remove the fan speed, the 1n4007, will there be a lot of changes to do on the code? I believe it’s required to change the reading from the LM35 to a temperature in degrees Celsius. I do think that’s your fan probaply needs a higher voltage to start up before you can use such low voltage to keep it spinning.
Had the same problem whit the whining at low speed, and after i changed the Pwm frequency it disapired. Yeah, im using a tip-120, my code aint exactly the same, but there shoud be no problem in just swiching the BD 139 out with a tip-120.
And how many you want connectet depents on your power supply, im running 5 fans at the time. My question is, can we use this project by replace the small fan on your video to the ceiling fan?
SpeedFan is a stable, reliable program which provides fan speed control using the existing facilities on the VNF4 motherboard for temperature readout and control of power to fan connectors.


Prior to configuration for a specific system, SpeedFan displays all the temperatures, fan speeds and voltage readings that it finds. It is reasonable to get manual fan control working for the CPU as a first step in using SpeedFan; generally, SpeedFan's default settings do this automatically (fans run at 100%) although it is wise to verify because BIOS choices may affect the situation.
The remainder of this document covers configuring SpeedFan for the VNF4 although the material may be generally useful with other mobo's. The following descriptions are ordered according to the tabs on SpeedFan's Configure screen, proceeding from left to right.
In addition, sensors may be renamed so it is easier to remember what they are measuring; this has been done for the VNF4 in all screens shown in this section. The VNF4's CPU temperature is measured by a diode, probably on the CPU because it reacts quickly to changes in CPU load.
To set the "Desired" or target temperature click on the "Sample" column for the selected item, CPU.
Set the "Warning" CPU temperature to a value which should not be reached in normal use but which is well below the damage point.
To associate a sensor with the fan for control, click the "+" to the left of the sensor to show the drop down list, then click on the desired fan.
As a safety measure, SpeedFan will apply 100% when the controlled temperature exceeds the Warning temperature you set.
In my system SpeedFan controls another fan to cool the NF4 so PWM2 is Software controlled -- a less common scheme so you most likely won't do this. In v4.25, if no events are programmed then an error appears at the end of the list of sensors found on the board. Once you choose "Software controlled" SpeedFan is controlling the fan speed and YOU are controlling SpeedFan. Once you're sure SpeedFan is controlling fan speed properly, check the lower limit setting of the controlled fan(s) to be certain that they don't stop.
My conclusion, based on numerous experiments on my system, is that SpeedFan's control loop gain is too high when the error(difference between the measured and target temperature values) is small and conversely, the gain is too low when the error is large (e.g.
Perhaps the simplest way to reduce gain for small errors would be to add a counter for each fan. A different (similar but more complicated) way to improve speed stability would be to eliminate the setting for "Delta value for fan speeds". So, there are a number of ways to address fan speed instability, with various amounts of programming effort to write and debug. Preserving the chart selections while SpeedFan is running would be helpful; no need to preserve them between starts. A problem with using the Fan3 connection to control the NF4 fan is that this connector defaults to OFF in BIOS so this fan doesn't run until WinXP starts SpeedFan. In this picture, the chipset fan is plugged into the connector labeled "Fan3 Case Fan" so it can be controlled by SpeedFan. My VNF4 board died and a replacement Athlon 439 type board was not easily available so I replaced it with a Foxconn A7DA-S board, AMD 4850e, and 2GB of Corsair DDR2 memory in December 2008. I installed Speedfan on the A7DA-S and it found several temperatures but some were biased by +15C, i.e. Speedfan shows all three 8712F temperature readings seem to be from legitimate sensors so I assigned names to them by guessing what they're measuring. A peculiarity noted with my AMD retail CPU fan on this board is that even when the PWM is set to zero with Speedfan the CPU fan continues to spin slowly. Other than Foxconn's unhelpful attitude on the temperature readout and BIOS fan control issues, I like the Foxconn board better than any of the other mobo's I've built.
Clearance Sale - The Bluetooth DAQ Starter Kit will be shipped with two EMANT380 Bluetooth DAQ modules instead of one. Using Pulse-width modulation (PWM), the fan's power supply is turned on and off at a fixed frequency.
The advantages of PWM include a very simple drive circuit, good startup characteristics, and minimal heat dissipation in the switching transistor. NOTE: This add-in is designed to work exclusively with the HP MediaSmart Server EX47x models, and will not work with any other WHS systems.
MSS Fan Control allows the user to easily control the speed of the upper and lower exhaust fans of the MediaSmart Server. Welcome to the Web's Largest Dedicated Windows Home Server (WHS) Resource by Microsoft MVP Philip Churchill.
By Henry, on December 27th, 2010The Sparkle Power SPI270LE Flex ATX power supply has a rather noisy 40 mm fan that that is temperature-controlled to reduce noise when cool. Power supplies usually use single-layer circuit boards, making reverse-engineering the circuit possible. Being curious how the fan speed control circuit really behaves, I simulated it using LTspice.
Many electronic circuits related to fan speed controlling have been published here and this one is just another approach.
Hi Gerald use thick copper (10 to 20 mm) strips used as link in high current cable links or thick aluminium bars. Instead, Gainward provides the user with some useful programs for video playback and authoring. A short S-to-Composite cable, two DVI-to-VGA connectors and a dual molex power connector complete the set of bundled accessories. The cage is intended to keep the user from accidentally touching the high speed fans and to prevent damage to the card. The dual fan set draws colder air from the case interior and blows it on the chips in order to keep them from overheating. Instead, Gainward focuses on the memory components which are the main concern in overclocking when enabling the Enhanced Mode Settings from the driver menu. Even though the design is such that it doesn't need a second molex connector for power, the power consumption in itself is simply insane. While the card with just the heat sinks installed could fit in the AGP slot alone, the fans and copper cage require the extra space. With the supplied cables and adaptors that come with the card, you will have no problem connecting your accessories or hardware to it. For the first time, we were able to actually follow the storyline of the game test without being distracted by the low framerates we had witnessed with other cards. Immediate visibility is only short range, and there is a skybox surrounding the whole scene. The constant use of dynamic shadows and complexity of the grass and trees drop the framerate to 15. It might not be close to the 7000 3DMarks which indicate an overall sufficient framerate for all game tests but comparing it to the X300 and X600, you get 3-4 times their performance with only 2 times the money needed for an X600 XT. A very strong point of 3DMark is that its VGA card measuring does not require any CPU power. Particles are used a lot in this test - smoke and vapor trails, flak and gunfire, and explosions are produced using point sprites and quads. Keep in mind that this is not the total result of the tests, but the result of the whole benchmark process including all 9 chapters. It's mainly a directx 8.1 benchmark and the score depends a lot on the CPU power of your computer.
Gamers keeping the excellence of Half Life 1 in their mind as well as the remarkable E3 demo preview, have been anxiously waiting for the much delayed release of HL2.
Freeman is thrust into the unenviable role of rescuing the world from the wrong he unleashed back at Black Mesa.
They can assess threats, navigate tricky terrain, and fashion weapons from whatever is at hand. We set all the details to the highest level and changed the resolutions from 800x600 to 1600x1200. If you are a fan of the previous Doom games then you will get many flashbacks with this revision, since you will find reimagined versions of almost every monster from both Doom and Doom II. With the Gainward 6800GT GLH and enhanced mode settings selected at the driver menu, you will enjoy Doom 3 with all the eye candy effects, quality settings enabled and at the maximum resolution of 1600x1200.
With a past best left behind you, you'll be focusing on your present assignment: escorting an ambitious journalist named Valerie Cortez to the Island of Cabatu. Real-time editing, bump-mapping, static lights, network system, integrated physics system, shaders, shadows and a dynamic music system are just some of the state of-the-art features that the CryEngine offers.
All physics seem to be very realistic and you never get bored when facing enemies, since character models have multiple animations that blend in believable ways. The first test was committed with the Anti Aliasing (AA) and Anisotropic Filtering (AF) features off. Performance at 1600x1200 was sometimes jerky but when playing at 1280x1024, the 6800 GT GLH ran the benchmark without any problems.
As Marine Private Tommy Conlin, you must survive the devastating attack on Pearl Harbor and then join the Allied crusade to defeat imperial Japan's bloody conquest of the Pacific.


As the latest series Medal of Honour comes with new models and rendering effects, it needs a state of the art computer to run the game in full detail and quality options enabled. All overclocking is managed through Gainward's utility ExperTool which is supplied inside the driver software disk. On the right, you can see two fake heat indicators, one for the core and one for memory clock. The card is already overclocked at a satisfactory level and we found it most proper not to overclock this card any further, as the tiny performance gain we got wasn't worth the risk of instability. Only Thief 3 and Medal of Honour seemed to mind when we increased our resolution to 1600x1200 and that happened only when turning on AA and AF.
I had a few problems with the PWM part mainly because the fan made a disturbing noise so I had to add a simple RC filter at the output of the PWM pin on the Arduino board. The next if() is to check if temperature is higher than the minTemp and lower than the tempMax and if so then use the map() function to re-map the temp value from one value to another. When the temperature reaches the value set in tempMax the fan will be at its maximum spinning velocity and the LCD will display FANS: 100% even though the temperature might increase above tempMax. Make it at least 10x bigger them the one in series with your PWM pin – I tend to use 100k.
The minimum temperature is set to 30 but the fan only starts spinning at 50 degrees temperature. On startup SpeedFan scans the SMB and ISA busses, automatically finding all sensors on the motherboard. This simplifies initial testing as well as further configuration - everything available is visible (along with a few items that aren't really available so they produce erroneous readings). The associated fan(s) will go to 100% speed if the Warning temperature is exceeded so the fan noise may provide a warning of sorts.
Verify all sensors in this manner to ensure that only the desired sensor(s) are controlling the fan. Within 3 seconds the "Speed CPU %" should show a value within the control limits you set earlier. The line which slopes up to the right is SmartGuardian's temperature vs fan speed characteristic. This is conceptually simpler because it isn't a normal closed loop feedback control system, subject to Nyquist type criteria to avoid oscillation. To make a reasonable guess as to which temperature represented the CPU I tried adjusting the 8712F's PWM1 and found it controlled the CPU fan (lucky guess). The A7DA-S manual is the best I've seen, very clearly written with good illustrations and it actually covers points that caused questions on other boards I've used. The disadvantages involve increased stress on the fan and the inability to use on board speed or alarm sensors.
It also allows the user to configure the speed and temperature thresholds that determine how the fan speed should increase as the CPU temperature rises.
I have a server classed board intel S3200SH which power managment (for thermal..fans and on off of HDD and system sleep) worked great for the windows enterpirse server which I can not afford, wanted to make it work with WHS??? The fan control circuit failed and powered the fan at full speed regardless of temperature.
It is interesting the power supply uses entirely discrete devices using two bipolar PNP transistor to implement fan speed control.
The circuit appears to use both the output voltage as negative feedback and the thermistor voltage to set the output current that controls fan speed.
This caused enough emitter-base current to turn on the fan even when the base voltage is high. The load, which is the fan, is connected across the Vout (pin5) and ground (pin3) of the IC.
How to make the project and please send the layout the circuit and explanation of the circuit.
I got the required output on breadboard but fail to get output on pcb when layout done on eagle software; I guess I dont know to use the eagle software. Simply put, the card is a special version of the 6800GT built for the purposes of overclocking it up to the 6800 Ultra's clock speeds. The magic fireflies have flickering, bright green lights that playfully move around the forest. However, for reference use only, we decided it would be best to just leave it in our benchmark list so you can compare the next generation cards with the possibly outdated one you have at home.
As one of the few survivors, you struggle with shock and fear as you fight your way to Hell and back, in an epic clash against pure evil.
This will produce slightly higher results since it is also less gpu intensive but we can't afford being stuck at 40-50 fps because of our cpu.
From the attack at Pearl Harbor to the pivotal battle against Japanese Forces at Tarawa Island, Medal of Honor Pacific Assault gives PC gamers a sense of the courage it took to endure and overcome the Japanese threat in WWII and fight for VICTORY in the Pacific.
This game really gives you the feel of sneaking around and holding your breath when stuck in a sticky situation.
Increasing the core and memory clock speeds, the indicators increase their pointed value accordingly. Considering that most 6800GT cards can be easily clocked to Ultra speeds, we don't believe there was a need for further improvements on the card's part to handle the overclock.
In my case I used the well-known BD139 transistor and a 9V battery to provide power to the fan and transistor. Before 50 degrees the fan makes a slight whining noise and the blades jolt a bit but only spin once it hits 50 degrees. Check the "Automatically variated" box to enable automatic control (there are more steps needed to completely enable auto control).
The above screen shows the results of adjusting the Minimum fan speed, where the stable section near the center is with the fan above the critical value. It simply requires minimum and maximum temperatures in addition to minimum and maximum PWM%'s. The A7DA-S board is nicely laid out and well constructed, plus the connector and part designations are easily readable. The IC has a dropout voltage as low as 0.5 and has also many useful features like power supply reverse protection, thermal protection, short circuit protection etc. The network comprising of potentiometers R1, R2 and resistor determines adjust current (Iadj) of the IC. Even though most of the time the boost is far from noticeable, overclocking remains the last resort when you can't afford to buy a brand new VGA card. In other words they don't really show how hot the graphics processor gets but just offer a suggestion of how far you should go when overclocking the card. The cooling method is excellent and provides you with plenty of breathing room, in overheating terms.
When setting the minimum value, avoid setting the value so low that the fan stops -- it often takes a large change to restart a fan after it stops.
Speedfan can offset temperatures for calibration so this allows Speedfan's display to make sense. By varying the Iadj using the POT R2 we can adjust the output voltage of the IC and hence the fan speed. The Winchester CPU's generally heat up slowly even with the fan off so if you're fiddling with only the CPU fan there is plenty of time to check and correct for rising temperatures.
This constant temperature reading apparently prevents the SmartGuardian function in our old friend, the IT8712F chip, from controlling the fan speed properly.
My rough calibration method is to note the readings on startup and ensure that they are only slightly greater than room temperature, or about 20C. Since my 4850e is fairly low power the temperatures remain safe but this could be an issue with a Phenom. Select "Software controlled" for only the CPU fan initially so you only have one thing to watch while you work out any kinks. Best guess is BIOS doesn't initialize the IT8712F (actually the IT8716F, a newer version) properly.
The basics on configuring and using Speedfan are covered in my earlier tome (above) on Speedfan setup for the VNF4 so I used that to recall how to use Speedfan since I haven't used it to adjust anything for years now. Two BC327 transistors are simulated because I can’t read the marking on the transistor. Here is the system at startup, showing part of the slow CPU fan rampdown and the startup of NF4 fan instability.
Other A7DA-S owners have also reported constant 40C readings from BIOS and Fox One in the Foxconn Forum so I'm not alone on this.
This approach might "hunt" in a small range but shouldn't oscillate between the PWM% limits as the present approach often does.



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