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poor crossfire and 100% CPU in Crysis 3 - Page 2

post #11 of 17
Check out this review on Tom's -- looks like your 50 FPS in Crossfire is just about right. They benched a pair of 7970s in crossfire and came out with 56.5 FPS average at 1920x1080p with Very High details enabled and 2x SMAA.

http://www.tomshardware.com/reviews/crysis-3-performance-benchmark-gaming,3451-6.html

Think everything this running OK on your system. If you want higher frame rates, just need to turn off the AA.

My Tri-SLI Titans only runs in the 60 FPS range with everything maxed out, but that's with a 1600p monitor and a 3930K.

Crysis 3 is a pig. A very pretty but slow moving pig.

Greg
post #12 of 17
What you're seeing is your i5 bottlenecking your (multi) gpu's a bit. Get an i7. You will see the same in Battlefield 3, 64 man map. Leave the base of firestorm/caspian in a busy server and look across the whole map and watch your gpu usage plummet.
post #13 of 17
3570k @ 95% cpu usage, sometimes hit's 100%
especially this level with the high grass
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post #14 of 17
Quote:
Originally Posted by leeb2013 View Post

ps I'm using 2x SMAA the same as with the GTX 680

max settings in C3 is Very High and 8MSAA. so, you were not running at max. i think only a 780 or Titan can do that with a single card solution.

with one 7950 at stock and my i7 at 4.5 in C3 using High and 4MSAA 1080 my minimum stays above 35fps.

crossfire 7950/7970 with my i7 @ 4.5 using Very High and 4MSAA this is what i get . . .



that was MP. the last three were indoors.
Edited by rdr09 - 9/24/13 at 3:59am
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post #15 of 17
Thread Starter 
sorry yes, max settings except 2xsmaa.

I had a bit more of a play last night as I've also been reflashing the 7950 bios's to get the temperatures down. I've now settings on 1000core/6000mem @ 1.081v (stock was 925core/5000mem at 1.25v).

I cleared the drivers and reinstalled CCC 13.10.

I've moved on a bit from that particular scene in Crysis, through the sewage tubes (where Phyco climbs the ladder and drops something making a noise and jokes about it) into the open area where cell are waiting. There's still plenty of grass and water this time, but I'm getting like 70-80fps and the CPU is only at 50-60% usage.

Very strangely, I found that 4xmsaa has the same fps as 2xsmaa at this point in the game!

Which would be the best AA to use? Presumably 4xMSAA is the better quality, although I can't tell any difference.
post #16 of 17
Thread Starter 
sorry, meant to say:

Very strangely, I found that 2xmsaa has the same fps as 2xsmaa at this point in the game!

Which would be the best AA to use? Presumably 2xMSAA is the better quality, although I can't tell any difference.
post #17 of 17
Quote:
Originally Posted by leeb2013 View Post

sorry, meant to say:

Very strangely, I found that 2xmsaa has the same fps as 2xsmaa at this point in the game!

Which would be the best AA to use? Presumably 2xMSAA is the better quality, although I can't tell any difference.

i've never used 2Xsmaa only 4msaa. got it from my settings in bf3. i tried a lower msaa but immediately noticed the jaggies. here is a screenie of Very High and 4MSAA . .



i also tried 8msaa with a single 7970 and it looked too fake and it was laggy i can't win. i would not mind if bf4 is this demanding, so long as it is smooth even when dipping down to the 30s. using 1080.
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