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rickshobbies
07-20-06, 01:32 AM
I just replaced a BFG 7800 GTX 256 with a BFG 7900 GTX 512. Although it seems to be functioning, the cooler runs continously at full speed. BFG tech support had me try a number of things (driver versions, etc) and even had me try using Rivatuner to control the fan speed (it was unable to change the speed of the fan either).

One of the qualities I wanted in the 7900 GTX was the quiet cooler, as my 7800 GTX is also quiet. I noticed another poster had this issue, but was able to control it with Rivatuner. Has anyone else seen this issue? Before I RMA it, I figured I would give this forum a shout.

Digital_Trans
07-20-06, 02:13 AM
I just replaced a BFG 7800 GTX 256 with a BFG 7900 GTX 512. Although it seems to be functioning, the cooler runs continously at full speed. BFG tech support had me try a number of things (driver versions, etc) and even had me try using Rivatuner to control the fan speed (it was unable to change the speed of the fan either).

One of the qualities I wanted in the 7900 GTX was the quiet cooler, as my 7800 GTX is also quiet. I noticed another poster had this issue, but was able to control it with Rivatuner. Has anyone else seen this issue? Before I RMA it, I figured I would give this forum a shout.

................................. :(

WeisserWalFisch
07-20-06, 09:15 AM
I was the [chosen] one :banghead: :banghead: :banghead: Yes you are right - sadly for reasons i do not understand the fans on the revised GPU A run at full speed even when the drivers are loaded B are louder than they should be even at lower rpm. Somehow in 2nd or 3rd try i managed this issue with RivaTuner. When i am home at 18:00 here in Europe - i will review my settings in RivaTuner and post them. Beware that you can solve Problem A but not problem B maybe BFG Tech had to use this specifications to solve the flashy thingy wrong shadow lockup problem. And no that is not fun.

WeisserWalFisch
07-20-06, 12:07 PM
Settings are as follows. But i think those settings are forgotten when changing performance mode. That is crap.

http://img72.imageshack.us/img72/5267/riva1nc6.jpg (http://imageshack.us)
http://img519.imageshack.us/img519/826/riva2su6.jpg (http://imageshack.us)

Xion X2
07-20-06, 12:17 PM
You said you tried driver versions; would that include both the 91.28 and 91.31? I've heard of a lot of problems with the 91.33's.

rickshobbies
07-20-06, 12:46 PM
Yeah BFG tech support had me try 91.31 and then 84.21. We did a variety of leaning procedures in between, including DriverCleaner (latest version).

When this didn't work, we tried RivaTuner and used pretty much what was described in the screenshots above. Trying various settings, the fan never changed it's speed at all. It stayed at what I assume was full speed as you could hear it from the other room and it was moving some serious air.

I finally decided to return te card. BFG recommended going with the 7950 even though my Intel D915PGN wasn't on the Nvidia tested list. He said that I wouldn't have any problems with that board as Intel has been using the full PCIe spec since PCIe launched. I hope he's right as I would hate to get this card and find out it won't run. (I upgraded to the latest bios for the board anyway just in case).

Is there anything specific I should immediately check once the card is installed to make sure that my system sees both GPUs?

WeisserWalFisch
07-20-06, 02:04 PM
You said you tried driver versions; would that include both the 91.28 and 91.31? I've heard of a lot of problems with the 91.33's.

Hello - i have tried 84.21 and using 91.33 now. For this issue i think the driver version seems to be not relevant.

WeisserWalFisch
07-20-06, 02:08 PM
Yeah BFG tech support had me try 91.31 and then 84.21. We did a variety of leaning procedures in between, including DriverCleaner (latest version).

When this didn't work, we tried RivaTuner and used pretty much what was described in the screenshots above. Trying various settings, the fan never changed it's speed at all. It stayed at what I assume was full speed as you could hear it from the other room and it was moving some serious air.

I finally decided to return te card. BFG recommended going with the 7950 even though my Intel D915PGN wasn't on the Nvidia tested list. He said that I wouldn't have any problems with that board as Intel has been using the full PCIe spec since PCIe launched. I hope he's right as I would hate to get this card and find out it won't run. (I upgraded to the latest bios for the board anyway just in case).

Is there anything specific I should immediately check once the card is installed to make sure that my system sees both GPUs?

Sorry for that - i have not stated that i use an DFL Lanparty Mainboard.

WeisserWalFisch
07-20-06, 02:14 PM
Wait - do not give up try this setting.

http://img332.imageshack.us/img332/9928/riva3wi7.jpg (http://imageshack.us)

rickshobbies
07-20-06, 03:50 PM
Yeah we played with that one too. It got to the point where we just wanted to see if we could get the fan to change at all, but nothing helped.

Someone mentioned that the newest revision of the BFG boards had the fan locked at full. If this is true, then that explains why I can't get the fan to slow down.

Oh well, back it goes and the 7950 GX2 is on the way. I can only hope that I won't have any technical issues with this card in my Intel D915PGN.

WeisserWalFisch
07-21-06, 02:08 AM
Yes RMA is a good idea at this point - the fans RPM are reset to full speed after a gaming session. I hope there is an RMA upgrade option and advance replacement so that i can get new hardware in time. No more adventures please :surrender :surrender :surrender

rickshobbies
07-21-06, 09:06 PM
Well, as an update for anyone who might be curious, the 7950 GX2 does in fact NOT work in an Intel D915PGN motherboard. Even with the latest ROM update, it won't even post. Despite the fact that BFG tech support said it would work (I know it's not on the Nvidia list, but many others that aren't are working, which is why I called BFG first).

Looks like I will just upgrade my MB for Conroe and then get G80 for my next upgrade...

11x
07-23-06, 11:47 AM
I am having the same issue with a BFG 7900gtx I received with an RMA. I could have sworn the driver level worked the first time I installed rivatuner but after some tweaking it was back to 100% fan noise.

Only thing that works right now is to set the low level to full - apply -then back to auto - apply.

Quite annoying really.

rickshobbies
07-23-06, 12:15 PM
Yeah, I've read other posts from folks who have received the latest batch of cards from BFG. It seems that they are locking the fan at full speed to address some heat issues. eVGA is taking a different route in that they are swapping out memory vendors and modding the boards.

Very discouraging if you want a 7900 series cards atm.

WeisserWalFisch
08-07-06, 10:47 AM
Addendum - RivaTuner only sets one fan here GPU1. How pleasant - time to mail to BFG again :( :( :(

http://img321.imageshack.us/img321/4241/gpufan1wt4.jpg (http://imageshack.us)

GPU fan speed at 100% is as follows.

http://img367.imageshack.us/img367/7429/gpufan2zh7.jpg (http://imageshack.us)

Best Regards WeisserWalFisch

WeisserWalFisch
08-21-06, 11:40 AM
I have to report that RMA has not solved the problem. I hope that BFGTech can find a solution. At the moment i am willing to (throwpc) - Best Regards from WeisserWalFisch.

caveh
08-25-06, 03:06 AM
i played around with nvclock under linux to find out :wtf: is up.
had to hack the src a bit... looks like the fan controller chip on
my BFG 7900 GTX is misconfigured! it's an ADT7473 if you care to read up
on it.

first off, it's told to keep the fan at 100% all the time. why put a fancy
fan controller chip on there if you're just going to run the fan at full speed
all the time??? surely, that can't be intentional!

second, when you do poke it to go into auto mode (at least with nvclock),
it monitors all 3 temp sensors and tries to spin up the fan to keep these temps
within a "cool" range. unfortunately, one of these sensors is programmed
to some ridiculously low value (like dry ice cold)... so, again, the fan runs
at full speed. i had to mod nvclock to put a sane value in this register, and
after that, it pretty much did the right thing.

WeisserWalFisch
09-01-06, 10:07 AM
i played around with nvclock under linux to find out :wtf: is up. Hello caveh - since the 4th set of BFG GPU again sounds like a set of hairdryers i search for a solution all this time. Is there a windows version of nvclock ??? I am running Windows XP Professional. Thank Regards WeisserWalFisch