DO NOT USE Nvidia 196.75 drivers

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DO NOT USE Nvidia 196.75 drivers

Postby JimF » Tue Mar 02, 2010 6:42 pm

I have just installed the new Nvidia 196.75 drivers and found that they have reduced the CPU usage on my GT 240 card to about 3 percent on an E8400 running Win7 64-bit. That is less than the 7 percent it was using with the 196.21 drivers, and the PPD seems unaffected.

EDIT: See the problems below with overheating on some cards (especially 8800GTs and various derivatives), and wait for updated drivers.
Last edited by JimF on Fri Mar 05, 2010 6:35 pm, edited 1 time in total.
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Re: Nvidia 196.75 drivers reduce CPU usage

Postby toTOW » Tue Mar 02, 2010 7:09 pm

On the exact same WU ?
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Re: Nvidia 196.75 drivers reduce CPU usage

Postby JimF » Tue Mar 02, 2010 7:50 pm

toTOW wrote:On the exact same WU ?

I was running P5785, stopped it and installed the new drivers, then rebooted. I checked it again later with HFM.NET, and am still getting 3956.2 PPD, so that is unchanged.

As for the percentage, I have been running the same 7 to 8 percent CPU usage for some time now, which struck me as a little strange since the previous driver (before 196.21) was also low, around 2 to 3 percent for the GT 240. If I recall correctly (not guaranteed), I checked the CPU usage right before installing the new driver also. And my GPU is running a couple of degrees warmer than before, so I am wondering whether the new drivers offload a little more from the CPU onto the GPU, though that is only speculation on my part.

ADDED: Same thing on the next WU, P10105. The CPU is running at 2 percent, and the GPU temp (and fan speed) is a little higher than with the 196.21 driver. I have another machine running GT 240's under WinXP, and never see more than 1 percent CPU usage for the FahCore; most of the time they show up as 0 percent in Task Manager. So I think Win7, at least the 64-bit version, is different in how it interacts with the GPU.
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Re: Nvidia 196.75 drivers reduce CPU usage

Postby toTOW » Wed Mar 03, 2010 9:59 am

Well ... good to know.

Did you notice a performance improvement with the CPU client(s) ?
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Re: Nvidia 196.75 drivers reduce CPU usage

Postby JimF » Wed Mar 03, 2010 1:51 pm

I guess I did not make myself clear. I am not running the CPU client. I am only running the GPU System tray client (6.23), and was looking at the CPU resource required to feed the GT 240 (Win7 64-bit). It was consistently 7 to 8 percent with the 196.21 driver over several days of use, but now is consistently 2 to 3 percent with the 196.75 driver. And my GT 240 is also consistently running a few degrees hotter than before and the fan is running faster (for example, about 50 percent speed rather than 35 percent). The trend continues this morning with P5785, so I don't think it is a difference in the work units as compared to the previous driver. That is no big deal, but some people might want to update to the new drivers to check on it.

And there is no doubt that my WinXP machine uses even less CPU power to feed the GT 240's, if that makes any difference to anyone in planning on which OS to use, though the numbers are small in any case.
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Re: Nvidia 196.75 drivers reduce CPU usage

Postby toTOW » Wed Mar 03, 2010 6:26 pm

Too bad you don't run a CPU client ... it should have shown if the CPU usage actually decreased of if it was only a matter of task manager interpretation.

I downloaded the new driver, but I'm to lazy to reboot to install it :mrgreen:
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Re: Nvidia 196.75 drivers reduce CPU usage

Postby DonMarkoni » Wed Mar 03, 2010 11:04 pm

toTOW wrote:I downloaded the new driver, but I'm to lazy to reboot to install it :mrgreen:


Go for W7 and you'll never have to reboot again! :biggrin: No more reboot required after installing chipset/graphic/sound driver.
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Re: Nvidia 196.75 drivers reduce CPU usage

Postby bruce » Thu Mar 04, 2010 12:38 am

DonMarkoni wrote:
toTOW wrote:I downloaded the new driver, but I'm to lazy to reboot to install it :mrgreen:


Go for W7 and you'll never have to reboot again! :biggrin: No more reboot required after installing chipset/graphic/sound driver.


Well, almost.

You do have to stop/restart the GPU client. If you update graphics drivers while FAH is running, you will get an EUE.
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Re: Nvidia 196.75 drivers reduce CPU usage

Postby jaxawier » Thu Mar 04, 2010 1:03 am

slightly off topic, but haven´t running those new drivers together with riva tuner per chanse ?
had some trouble on a secondary pc with newer drivers and riva tuner,back to 191.07 and it was all good.
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Re: Nvidia 196.75 drivers reduce CPU usage

Postby ChasR » Thu Mar 04, 2010 3:46 am

I'm not seeing any improvement in cpu usage with 196.75 in Win 7. Both gpus running FahCore_11 WUs are using about 3% of cpu as they did with 191.07, 195.62, 195.81, and 196.21. Riva seems to work (overclock) with 196.75, where it didn't with 196.21.
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Re: Nvidia 196.75 drivers reduce CPU usage

Postby jaxawier » Thu Mar 04, 2010 4:07 am

ChasR wrote: Riva seems to work (overclock) with 196.75, where it didn't with 196.21.

yes, it was missing the cool features,so guess I give 196.75 a go, thanks for confirmation :D
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Re: Nvidia 196.75 drivers reduce CPU usage

Postby toTOW » Thu Mar 04, 2010 10:51 am

DonMarkoni wrote:
toTOW wrote:I downloaded the new driver, but I'm to lazy to reboot to install it :mrgreen:


Go for W7 and you'll never have to reboot again! :biggrin: No more reboot required after installing chipset/graphic/sound driver.


I'm even more lazy when it's about reinstalling an OS (and by the way, I don't have any Seven license) :roll:


196.21 are known to break overclocking tools ... nVidia released a few days after 196.30 beta drivers to fix this problem (although some 3rd party tool developers also included a fix in their programs). So I guess 196.75 also include this fix and don't break any overclocking tool. ;)
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Re: Nvidia 196.75 drivers reduce CPU usage

Postby ElectricVehicle » Fri Mar 05, 2010 2:04 am

I've got a GTX 295 and 9600 GSO in the same system. If I attempt to turn off Multi-GPU (SLI), the drivers get weird with the display areas not matching the monitors so the display screen image is chopped up across monitors and is the wrong resolution. Some times the mouse and desktop are still functional enough that I can reboot but not much else. Other times, I have to use the hardware reset button. The you're stuck in the hell where you go into safe mode, uninstall the drivers so you can fix it but when you restart after that, windows installs the drivers automatically for you and seems to mess that up.

I was folding along fine for a day and I remembered I hadn't disabled Multi-GPU (SLI) which had caused problems in earlier driver versions. Now it seems like the computer won't work right if I have Multi-GPU (SLI) disabled, much less fold... So I'm going to try just leaving multi-gpu enabled.

This is on a brand new Windows 7 x64 install I just did yesterday and about the only thing I've done to it is to install the Nvidia drivers and FAH GPU (x3 clients for the 3 total GPUs) and one FAH SMP client.
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Re: Nvidia 196.75 drivers reduce CPU usage

Postby ElectricVehicle » Fri Mar 05, 2010 2:40 am

I may have to re-format the drive and re-install windows 7. No matter how many times I uninstall / re-install the 196.75 drivers and re-install the NVIDIA system tools I can't get the performance tab back for overclocking and setting the fan to macx to keep the temperatures down.

During the re-installation I'm getting:

The service for NVIDIA enthusiast platform drivers failed to start... Do you want to reboot now?

This is the inner perfomance install of the system tools with the outer install that installs performance, system monitor and update still running. Regardless of whether I reboot when prompted or if I install just perfomance or all three of the utilities or wait to the end of the outer install, the result is always the same - the performance tools fail to install. And of course I've uninstalled first, rebooted between each complete install / uninstall, etc. nogo...

So I blew off the performance tools and I'm at least folding at stock clocks but that's a waste of a good GPU. I've also noticed the dirvers are notorious about changing the main desktop (with the start button, task bar etc.) across the three monitors. I t even changes when all I do is open up the NVIDIA control panel. Nothing like having to switch through all three monitors when you reboot, again after you login and yet again after running NVIDIA control panel. And of course each time, yoiu don't know where it's going to show up this time, so... you just keep switching the monitors until you finally find it.

Nothing really in the official Nvidia thread about the things I'm running in to but interesting anyway in learning about this driver version:
Official NVIDIA Forceware 196.75 display driver feedback thread
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Re: Nvidia 196.75 drivers reduce CPU usage

Postby runandfun » Fri Mar 05, 2010 11:05 am

Nvidia withdrew 196.75

To users reporting fan speed issues with the latest 196.75 WHQL drivers from nvidia.com. Until we can verify and root cause this issue, we recommend that customers stay with, or return to 196.21 WHQL drivers. Release 196.75 drivers have been temporarily removed from our website.

http://forums.nvidia.com/index.php?s=7581313349d582e7d61bb477b49fed50&showtopic=161391&st=80&p=1012883&#entry1012883
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