- Aug 4, 2016
- 13
- 0
- 10,510
Hi all,
Long, loooong time reader, but finally got an account
Love these forums, they've been so helpful for such a noob! On to the question...
I started playing Borderlands the Pre-Sequel last week (little bit late, I know) and noticed that whenever there was a lot of PhysX going on, the FPS dropped into the 30s.
Hardware
CPU: 3570k @4.4GHz
Mobo: ASRock z77 Extreme4-m
Ram: 8Gb Vengeance
GPU: gtx 970
Power: Corsair RM850i
A good bit of googling showed a few people claiming adding their old gt 640 (and other, equally crap GPUs) as a dedicated PhysX GPU saw a large improvement in min FPS, and since I had one hanging around I thought I'd try it. I plugged the 640 into the mobo and... the PC would not POST. There is black screen, nothing else regardless of whether the monitor is plugged into the 970 or 640 (or mobo). When I press the power button it instantly turns off, so windows has not booted.
It boots happily to Windows with the 970 in PCIE slots 1, 3 and 4. It boots to Windows with the 640 in slots 1, 3 and 4. The 850W power supply should be fine for the extra 50W (or whatever) the 640 adds. Both GPUs were sitting happily in their PCIE slots, and I've tried it a dozen different times over the last 2 months. I saw another person had some success clearing CMOS, but it changed nothing for me (the OC and fan profiles did return to stock in the BIOS, so I guess it was cleared).
What could it be? Have I noobed out and missed some setting somewhere? Is there some trick to this arrangement?
At this point I'm just wondering why it hasn't worked, since I was really only trying it because I has the parts lying around.
Thanks all!
Ben
Long, loooong time reader, but finally got an account
Love these forums, they've been so helpful for such a noob! On to the question...I started playing Borderlands the Pre-Sequel last week (little bit late, I know) and noticed that whenever there was a lot of PhysX going on, the FPS dropped into the 30s.
Hardware
CPU: 3570k @4.4GHz
Mobo: ASRock z77 Extreme4-m
Ram: 8Gb Vengeance
GPU: gtx 970
Power: Corsair RM850i
A good bit of googling showed a few people claiming adding their old gt 640 (and other, equally crap GPUs) as a dedicated PhysX GPU saw a large improvement in min FPS, and since I had one hanging around I thought I'd try it. I plugged the 640 into the mobo and... the PC would not POST. There is black screen, nothing else regardless of whether the monitor is plugged into the 970 or 640 (or mobo). When I press the power button it instantly turns off, so windows has not booted.
It boots happily to Windows with the 970 in PCIE slots 1, 3 and 4. It boots to Windows with the 640 in slots 1, 3 and 4. The 850W power supply should be fine for the extra 50W (or whatever) the 640 adds. Both GPUs were sitting happily in their PCIE slots, and I've tried it a dozen different times over the last 2 months. I saw another person had some success clearing CMOS, but it changed nothing for me (the OC and fan profiles did return to stock in the BIOS, so I guess it was cleared).
What could it be? Have I noobed out and missed some setting somewhere? Is there some trick to this arrangement?
At this point I'm just wondering why it hasn't worked, since I was really only trying it because I has the parts lying around.
Thanks all!
Ben
I must be missing something! Lol.
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