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post #41 of 53
Quote:
Originally Posted by BababooeyHTJ View Post
Yes Nvidia and AMD do a great job with optimizing for benchmarks. In real world gaming that sort of scaling with sli is not the norm, especially with minimums.
Here is a non optimized comparison using FRAPS in Crysis 2 (A game I'm having some sli usage issues with).



My fps are capped @ 100 by the game, but even still you can clearly see the unaffected MIN fps difference between both single and sli.
    
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post #42 of 53
Thanks, those are the types of comparisons that I like to see. Crysis and Metro were two games where I was honestly disappointed with sli scaling despite how good scaling looked in that last benchmark.

Here is what I saw with Crysis.

Quote:
Single GTX570

2011-06-17 22:15:19 - crysis
Frames: 7068 - Time: 169588ms - Avg: 41.677 - Min: 28 - Max: 56
Quote:
GTX570 sli

2011-06-22 18:38:46 - crysis
Frames: 12003 - Time: 165766ms - Avg: 72.409 - Min: 39 - Max: 101
That may sound ok but 6950 crossfire was a much smoother experience in Crysis.

Quote:
6950 crossfire
2011-06-11 13:20:01 - crysis
Frames: 10734 - Time: 148871ms - Avg: 72.103 - Min: 49 - Max: 94

Edited by BababooeyHTJ - 8/4/11 at 7:10pm
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post #43 of 53
AMD is a lot faster in crysis 1, possibly because it is a mostly texture based game (jungle) and AMD has better texture fillrates than the 580.

The other thing you have to look at is cpu bottlenecking. AMD seems to do better when cpu limited, from 4Ghz to 5.3Ghz I gained something like 14 MIN fps in Crysis 1 with my 470s.

Metro 2033 benchmarking tool pulls those frames out of its behind, I ran the benchmark and used FRAPS to record it - the average was pretty close, however both MIN and MAX are grossly overstated by the benchmark tool. MIN is way lower than what is actually experienced, and max is way too high. Metro 2033 is another game that will bottleneck an i5-2500k and a single mid/high end card.
Edited by BallaTheFeared - 8/4/11 at 8:12pm
    
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post #44 of 53
Quote:
Originally Posted by BallaTheFeared View Post
AMD is a lot faster in crysis 1, possibly because it is a mostly texture based game (jungle) and AMD has better texture fillrates than the 580.

The other thing you have to look at is cpu bottlenecking. AMD seems to do better when cpu limited, from 4Ghz to 5.3Ghz I gained something like 14 MIN fps in Crysis 1 with my 470s.

Metro 2033 benchmarking tool pulls those frames out of its behind, I ran the benchmark and used FRAPS to record it - the average was pretty close, however both MIN and MAX are grossly overstated by the benchmark tool. MIN is way lower than what is actually experienced, and max is way too high. Metro 2033 is another game that will bottleneck an i5-2500k and a single mid/high end card.

I don't know how cpu limited you can be at 4.8ghz on a 2500k in a four year old game. Minimums were fine on a single card but didn't scale too well with sli unlike AMD. Thats what I saw at least.
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post #45 of 53
Quote:
Originally Posted by pursuinginsanity View Post
No. A single card (460 768mb) cannot maintain a constant 60FPS inf BC2. 2 OTOH, can. It's a much better experience than a single card.

Besides. Whats the point of more than 60 if your monitor is limited to 60hz anyway?
I think you might have misunderstood me.

What is the point of running sli if your monitor is capped at 60

The whole point I am trying to make is why SLI if your going to VSYNC when the single 580 is alrady going to do quite well...

Ok 2-3 games that it might need it but apart from that....
Anyway...bit silly

Which 580 is 768 MB????

I don't recall the OP having a gtx 460

Must be missing something...

EDIT I see what you mean now about the gtx 460

The guy I quoted.

Too many browser tabs open


Fair enough if your monitor is capable of more fair and square or if you just want the cool factor for the benchmark.

Apart from that I see no point but an utter waste.
Edited by makesithappen - 8/5/11 at 3:38am
 
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post #46 of 53
Quote:
Originally Posted by munaim1 View Post
depends on what your playing and on what settings:


METRO2033

SINGLE CARD TEST - Nvidia 275.33 (SINGLE)



SLI TEST - Nvidia 275.33 (WHQL)





Crysis

SINGLE CARD TEST - Nvidia 275.33 (WHQL)



SLI TEST - Nvidia 275.33 (WHQL)





Crysis Warhead

SINGLE CARD TEST - Nvidia 275.33 (WHQL)



SLI TEST - Nvidia 275.33 (WHQL)





Heaven Benchmark

SINGLE CARD TEST - Nvidia 275.33 (WHQL)



SLI TEST - Nvidia 275.33 (WHQL)






3d Mark Vantage

SINGLE CARD TEST - Nvidia 275.33 (WHQL)



SLI TEST - Nvidia 275.33 (WHQL)




FPS doubled most of the time, SLI scaling is awesome.
Of course no arguments there what so ever!!!

Quote:
Originally Posted by pursuinginsanity View Post
No. A single card (460 768mb) cannot maintain a constant 60FPS inf BC2. 2 OTOH, can. It's a much better experience than a single card.

Besides. Whats the point of more than 60 if your monitor is limited to 60hz anyway?
I think you might have misunderstood me.

What is the point of running sli if your monitor is capped at 60

The whole point I am trying to make is why SLI if your going to VSYNC when the single 580 is alrady going to do quite well...

Ok 2-3 games that it might need it but apart from that....
Anyway...bit silly

Which 580 is 768 MB????

I don't recall the OP having a gtx 460
Must be missing something...

EDIT I see what you mean now about the gtx 460

The guy I quoted.

Too many browser tabs open


Fair enough if your monitor is capable of more fair and square or if you just want the cool factor for the benchmark.

Apart from that I see no point but an utter waste.
Edited by makesithappen - 8/5/11 at 3:38am
 
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post #47 of 53
There are a couple games where I see what the OP is describing, and Crysis is definitely the main offender. It just doesn't "feel" right in multi-GPU mode unless your FPS is north of 45-50.

That said, I've really only experienced this issue when the FPS is already low, 30-40 FPS or lower. It seemed worse to me on AMD with two 6950s, where things didn't feel right unless I was at 50+ FPS.

Not sure what's going on for the OP. Run DriverSweeper, uninstall/remove every driver file and iteration, then try again.

That said, yes, SLI of anything recent for a 1080p system seems silly to me. You only benefit in a couple games with that. Much better to invest in 120hz monitor and get that silky smoothness.
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post #48 of 53
It's a known thing that performance with a single card in the 30s and 40s feels super smooth compared to a SLI setup. I can't find the links to a youtube demonstration where it clearly showed how 2 cards are basically lagging in HL 2 vs a single one. Still, once you get above a certain threshold everything is fine.
post #49 of 53
Quote:
Originally Posted by BallaTheFeared View Post
AMD is a lot faster in crysis 1, possibly because it is a mostly texture based game (jungle) and AMD has better texture fillrates than the 580.

The other thing you have to look at is cpu bottlenecking. AMD seems to do better when cpu limited, from 4Ghz to 5.3Ghz I gained something like 14 MIN fps in Crysis 1 with my 470s.

Metro 2033 benchmarking tool pulls those frames out of its behind, I ran the benchmark and used FRAPS to record it - the average was pretty close, however both MIN and MAX are grossly overstated by the benchmark tool. MIN is way lower than what is actually experienced, and max is way too high. Metro 2033 is another game that will bottleneck an i5-2500k and a single mid/high end card.
Balla, I was (mostly) agreeing w/you all the way til the end there

Metro is one of the very hardest games to get any appreciable sort of CPU bottleneck on ... you have to have a TON of GPU power, not a lot of CPU power, and you have to turn the settings WAAAAY down (and hence get the FPS way up) to get much of any CPU BN on it ... It is for sure a game w/a relatively low CPU demand per frame rendered.

Crysis 1 is a totally different story. Older CPU's can start to struggle at 40fps in Crysis.

Also, I've never seen any evidence to positively suggest that AMD cards require less CPU power per frame rendered than nV cards. If anythign I'd think it'd be the opposite, due to the fact that thread dispatching is done via software (i.e. drivers) with the AMD cards, vs. nV which has dedicated hardware to handle dispatching of threads ('superscalar architecture' is their buzzword for the feature).
    
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post #50 of 53
It's another Crysis 2 deal then, usage isn't great but going from 3.3GHz to 4.8GHz netted me all of 1.3fps~.

You never answered my PM
    
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