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Extensive In-Game Crysis CPU Testing

post #1 of 9
Thread Starter 
Okay guys, I put a LOT of friggin time into this so I hope you appreciate it.

After seeing numerous claims by people that Crysis exhibited considerable CPU-based throttling of FPS while in-game, I decided to put this claim to the test. I had seen very limited impact of CPU-speeds on FPS in the regular GPU benchmark (I suppose that's why it's CALLED a GPU benchmark, eh?), but had never really done much analysis using the assault_harbor test in the Crysis Benchmarking Tool.

The following are my results. All driver settings remain the same throughout and were set to let the in-game settings make all the decisions. 174.74 was used, however I'm using v1.1 of the Crysis game itself. I decided to *approximate* the effects when using a 8800GTS640 (although the clock settings are admittedly a bit low, so it's really just an estimate) and to closely mirror the effects when using the highest overclocked 9800GTS I've seen on the market.

I'll leave it up to you guys to further analyze my results.

Enjoy!


800x600 all low no AA assault_harbor test
************************************************** ****************************
(500/1242/802, e8400@3.0GHz, 333x9, 1:1)
88.87 fps
(500/1242/802, e8400@4.0GHz, 445x9, 1:1)
119.23 fps (+30.26) (+34% due to 33%CPU OC @500MHz)

Effect of 33% CPU OC (3->4GHz) at 8800GTS640 Speeds: 34%

(756/1890/1101, e8400@3.0GHz)
91.03 fps (+2.16) (+2.4% due to 50%GPU OC @ 3.0GHz)
(756/1890/1101, e8400@4.0GHz)
120.86666 fps (+32) (+36% due to 33%CPU OC + 50%GPU OC)

Effect of 33% CPU OC (3->4GHz) at 9800GTX SSC Speeds: (120.87-91.03)/91.03 = 32.8%


1280x1024 all med no AA assault_harbor test
************************************************** ****************************
(500/1242/802, e8400@3.0GHz)
54.88 fps
(500/1242/802, e8400@4.0GHz)
56.73 fps (+1.85) (+3.4%)

Effect of 33% CPU OC (3->4GHz) at 8800GTS640 Speeds: 3.4%

(756/1890/1101, e8400@3.0GHz)
60.23 fps (+5.35) (+9.75%)
(756/1890/1101, e8400@4.0GHz)
74.32 fps (+19.44) (+35.4%)

Effect of 33% CPU OC (3->4GHz) at 9800GTX SSC Speeds: 23.4%


800x600 all high no AA assault_harbor test
************************************************** ****************************
(500/1242/802, e8400@3.0GHz)
47.82 fps
(500/1242/802, e8400@4.0GHz)
52.83 fps (+5.01) (+10.5%)

Effect of 33% CPU OC (3->4GHz) at 8800GTS640 Speeds: 10.5%

(756/1890/1101, e8400@3.0GHz)
51.58 fps (+3.76) (+7.9%)
(756/1890/1101, e8400@4.0GHz)
66.43 fps (+18.61) (+38.9%)

Effect of 33% CPU OC (3->4GHz) at 9800GTX SSC Speeds: 28.8%


1680x1050 all med no AA assault_harbor test
************************************************** ****************************
(500/1242/802, e8400@3.0GHz)
43.41 fps
(500/1242/802, e8400@4.0GHz)
44.48 fps (+1.1) (+2.5%)

Effect of 33% CPU OC (3->4GHz) at 8800GTS640 Speeds: 2.5%

(756/1890/1101, e8400@3.0GHz)
53.63 fps (+10.22) (+23.5%)
(756/1890/1101, e8400@4.0GHz)
61.68 fps (18.27) (+42%)

Effect of 33% CPU OC (3->4GHz) at 9800GTX SSC Speeds: 15%


1680x1050 all high 2xAA assault_harbor test
************************************************** ****************************
(500/1242/802, e8400@3.0GHz)
17.60 fps
(500/1242/802, e8400@4.0GHz)
17.64 fps (+.04) (0%)

Effect of 33% CPU OC (3->4GHz) at 8800GTS640 Speeds: 0%

(756/1890/1101, e8400@3.0GHz)
24.93 fps (+7.33) (+42%)
(756/1890/1101, e8400@4.0GHz)
24.88 fps (+7.28) (+41%)

Effect of 33% CPU OC (3->4GHz) at 9800GTX SSC Speeds: 0%

************************************************** ****************************
    
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post #2 of 9
Great post, some interesting information in there.
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post #3 of 9
Thread Starter 
Wow, so nobody wants to make any substantive remarks or draw any conclusions about these results?

I was hoping my many hours of hard work would inspire great insights and spirited debate amongst my comrades.

Oh well. I learned a lot by doing these tests, myself, so ... WHATEVER GUYS!!!
    
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post #4 of 9
No offense but...Crysis sucks, it gets boring too fast. Shooting down trees is only fun for a while.
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post #5 of 9
Quote:
Originally Posted by brettjv View Post
Wow, so nobody wants to make any substantive remarks or draw any conclusions about these results?

I was hoping my many hours of hard work would inspire great insights and spirited debate amongst my comrades.

Oh well. I learned a lot by doing these tests, myself, so ... WHATEVER GUYS!!!


Yeah I was considering doing something very similar to what you've done here... But I figured it would go unnoticed since the 8800gts has been EOLd. I'll see if I can put some runs together to help corroborate your findings.

Is the Crysis bench application included on the disk/install or do I have to find that somewhere else?

BTW great work, thanks 4 the effort.

-EDIT- Clarification

Just realized you used an 8800gts G80 and G92. Still I should be able to recreate a similar CPU bottleneck. However that bottleneck switches back to the GPU when AA is enabled, as is illustrated by the near identical fps. The G92 card is choked down due to BW and ROPs, I wonder if the FPS difference between G80+G92 would shrink actually shrink @ 1900x1200 + 2/4AA?
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post #6 of 9
Seems like when graphics card are able to maintain 60fps in crysis an e8400 may not be enough.
8)
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post #7 of 9
Thread Starter 
The assault_harbor bench is included in the third-party Crysis benchmarking tool. Think I got mine from Guru3d.com.

And the point was not so much to look at the 8800GTS640 per se, but rather to see the effects of cpu vs. gpu bottlenecking at various common settings.

One thing I'd love to see is whether the results look the same with a Quad, if anyone has a spare 6 hours or so to run these tests and present the data, I for one would be stoked. I'd also like to see the higher-end settings extended to include DX10 and Tri/Quad/SLI performance.

Sylon: I don't disagree with your points, but who said anything about PLAYING the game? I think it makes for an interesting test in any case, seeing as how there's hardly anything else around that stresses our newer high-end gpu's sufficiently to function as a proper benchmark. Turns out it can tax our high-end processors (when run at higher FPS's) as well.
    
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post #8 of 9
Thread Starter 
Quote:
Originally Posted by shinyboy View Post
Seems like when graphics card are able to maintain 60fps in crysis an e8400 may not be enough.
8)
EXCELLENT observation my friend. The way I'm seeing it, a 3.0GHz core 2 *begins* to limit framerates at about 50fps. It seems a logical assumption to make that a 8400 at 4.0 should start to do the same thing at about 67fps (50+33%).

This being said, these numbers are far above 'playable' framerates, and I see no evidence to suggest that a CPU (presuming at least a reasonable speed) will *ever* bring one's frames down into the 'unplayable' realm, no matter what settings are used.

If we're talking about e-peen concerns, then yes, for SURE CPU-throttling can come into effect when we start getting graphics solutions that are capable of high fps's. At least if we're IN GAME.

The GPU benchmark will *NOT* show anywhere near the same degree of cpu-throttling as happens in assault_harbor, I can state that with certainty.
    
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post #9 of 9
nice benches,i would really like to see someone doing it with a GX2 and 8400 at very high settings at 1680x1050 and see what overclocking the 8400 does for them. rep+
    
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