three way crossfire BSOD

[grandpatzer]

So I recently installed my new cards.

I'm getting BSOD inside windows 7, the bluescreen says something about ATI and also is at bottom dumping physical memory.

So I'm now going to try just 2x 7950 gpu's.

In total I have 2x 7950 and 1x 7970, I might end up selling the 7950's or the 7970.

''*********************************************** BSOD SBOD BSOD BDOS BSOD *******************************************************

Problem signature:

Problem Event Name: BlueScreen

OS Version: 6.1.7601.2.1.0.768.3

Locale ID: 1033

Additional information about the problem:

BCCode: 116

BCP1: FFFFFA800871D010

BCP2: FFFFF880069269E0

BCP3: 0000000000000000

BCP4: 000000000000000D

OS Version: 6_1_7601

Service Pack: 1_0

Product: 768_1

Files that help describe the problem:

C:\Windows\Minidump\022212-16941-01.dmp

C:\Users\Allt\AppData\Local\Temp\WER-27955-0.sysdata.xml

Read our privacy statement online:

http://go.microsoft.com/fwlink/?li [...] cid=0x0409

If the online privacy statement is not available, please read our privacy statement offline:

C:\Windows\system32\en-US\erofflps.txt

''*********************************************** BSOD SBOD BSOD BDOS BSOD *******************************************************

 

[kilobravo]

Think you need a little more NB voltage.

 

[grandpatzer]

How do I find out what the stock NB voltage is for my mobo and how I increase it properly?

edit--> I'm having BSOD with just 2 7950 aswell, this never happened with my 6950's

 

[kilobravo]

Found this bsod code 116 with amd p2

Its been ages ago since i oc`ed a p2,but look for dugdiamonds oc guide for beginners with a p2-1090t.

 

[grandpatzer]

Found this bsod code 116 with amd p2

Its been ages ago since i oc`ed a p2,but look for dugdiamonds oc guide for beginners with a p2-1090t.

thanks, I have to admit I'm a bit suprised the problem is my phenom and mobo with the ati gpu's, never had problem with 6950, I recently went from a PHII X4 965be to a 1045t X6.

Edit---> NOW after not running any logging software the cards are stable.

I got 20fps & 505points with one 7950 in Heaven 2.5, with 2x I get 37.7fps and 948points, so scaling is amazing and working properly

 

[kilobravo]

Nice

 

[grandpatzer]

I think I'll end up using just the 2 7950 for couple of days and if everything is 100% stable I will test using Gpuz and see if it crashes.

If it crashes not sure what to do

 

[kilobravo]

Maybe use the waiting too,to get familiar with the bios.

 

[grandpatzer]

I'm honestly not convinced my problem has to do with Motherboard or CPU, the mobo has 4 units PCIE 2.0 you would think it should handle 3 GPU's just fine without me needing to tweak the voltage?

 

[S_I_N]

errrrmm this is most likely your problem mate PSU 750W AX not enough juice for 3 cards. plus everything else.

 

[grandpatzer]

I have 1000w psu

 

[S_I_N]

ahhh update ur sig them lol

 

[grandpatzer]

ahhh update ur sig them lol

I now have updated sig

It's not a well known brand but jonny guru gave it a wery good review.

Strange thing is first time when I removed the 7970 BSOD but then after thatmy 2x 7950 have been running without BSOD, not sure what to make of it.

 

[grandpatzer]

So after once giving BSOD with 2 7950 just after removing the 7970 I have had 0 BSOD.

Heaven 2.5 and Alien vs Predator give almost perfect scaling vs 1 7950.

Saints Row 3 is really laggt in crossfire, when disabling Crossfire it is smooth as butter (1 card used only).

 

[S_I_N]

could still be a power issue could be the different between 7950 and 7970 isnt playing nicely could be a bad 7970 but if it works solo then thats not likely. so many things it could be its hard to narrow it down but imho 2x 7950 should work well for a long time to come. So send me ur 7970 I'll use my 570hd for physics and play around with it

 

[grandpatzer]

could still be a power issue could be the different between 7950 and 7970 isnt playing nicely could be a bad 7970 but if it works solo then thats not likely. so many things it could be its hard to narrow it down but imho 2x 7950 should work well for a long time to come. So send me ur 7970 I'll use my 570hd for physics and play around with it

well I'm trying to max out 3gb vram can't do that with just 2 7950

 

[S_I_N]

well I'm trying to max out 3gb vram can't do that with just 2 7950

sorry not following you there vram doesnt stack mate its just what the lowest card has thats it.