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Questions about hd 7950 crossfire and Crysis 3 - Page 2

post #11 of 18
Thread Starter 
Thank you! I will make sure to follow the guide tomorrow once I am out of school. Thank you all for the replies. I will keep you updated on the results.
post #12 of 18
Honestly I think you might need to turn a few things from Very High down to High to get the FPS you're looking for. Additional CPU horsepower wouldn't hurt either, you could try a mild overclock and see what the impact on FPS is.

Try running PERFMON and logging your CPU activity while playing. Then you can go back and review the performance statistics after your session and see just how high and how long the CPU is maxed out. If you see any CPU activity pegged at 85%+ for extended periods of time, you definitely have a bottleneck.

Greg
post #13 of 18
Thread Starter 
Juub:
Thank you for the link. I will follow that guide tomorrow once I get out to school. I will keep you updated on the results.

dir_d:
I just OC them within the CCC to 1000/1575. The Fps look similar to before I OCed them. around 20 to 30. Maybe this is saying CPU is bottlenecking? I am going to bed at the moment and will keep this thread updated once I follow the guide from Juub's reply.


hammong:
hmm I already have CPU OCed at 3.6 over the stock 3.3. Let me look into Perfmon and learn how it works
Edited by Handola - 8/25/13 at 10:50pm
post #14 of 18
Thread Starter 
I just looked into Perfmon and If I did everything right (I picked to record processor) It showed 70% on % Interrupt time and 40% DCP time? I am not sure what lines I should be looking at lol.

I tried to record another one with Processor Info selected and it shows me a peak at C1 time 90% but it comes down for a little bit.
Edited by Handola - 8/25/13 at 11:09pm
post #15 of 18
I think you're OK then -- just asking too much from your 7950 Crossfire at 1440p with Crysis 3.

Greg
post #16 of 18
as much as i love my thuban (4GHz), i would not dare pair it with 2 7950s. a 7950 is about equal to 2 6950s. you have four in your system. even my i7 at 4.5 struggled with 7950/7970 crossfire.
Second Intel Rig
(16 items)
 
  
CPUMotherboardGraphicsRAM
2700 4.5/ 1.28 77 290 (2) 8 / 1600 
Hard DriveCoolingOSMonitor
1000 360/240 7 64 28 2160 
PowerCase
850 540 
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Second Intel Rig
(16 items)
 
  
CPUMotherboardGraphicsRAM
2700 4.5/ 1.28 77 290 (2) 8 / 1600 
Hard DriveCoolingOSMonitor
1000 360/240 7 64 28 2160 
PowerCase
850 540 
  hide details  
Reply
post #17 of 18
Thread Starter 
Okay I did some testing with MSI afterburner and HWiN and notice something really strange. My GPU number 0 shows 50 to 60% utilization when GPU number one shows 98 or 99% all the time
CPU cores are between 65% to as high as 90+ . I don't understand why GPU number 0 is not at 99%? I have my screen connected to the first GPU. FPS is still around 20 to 30 at first level of Crysis 3. I do notice a FPS increase to 30-40 in darker areas



I looked around for answers to GPU usage problem and people are saying it's a sign of CPU bottlenecking? Maybe it's time to upgrade..
Edited by Handola - 8/26/13 at 3:09pm
post #18 of 18
Thread Starter 
However I am starting to agree with you hammong, maybe I am asking too much from my 7950's. Any suggestion on what to turn down to get a smoother experience without impacting graphics too much? I just want a stable 30+ FPS and getting pretty close to that right now.
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