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Soldato
Joined
24 Jun 2004
Posts
10,977
Location
Manchester
Interesting...

I'm testing out my pair of GTX780s (at about 1150Mhz). In the Heaven 4.0 benchmark they're right about where I would expect them to be (~2700 points). However on this benchmark they're a good few hundred points behind the curve... I'm getting ~4200 when I would expect to be around 4700.

Is this benchmark particularly CPU limited? I'm running an old i7-930 at 3.8Ghz right now so that could explain the discrepancy. Also, whenever a scene changes my framerate tanks down to the mid-40s for a short while (while the screen is black), before coming back to ~100fps when the scene is active. Is this the same for everyone? I'm assuming it's loading the scene into memory, but it really drags down the framerate. Is there some form of pre-caching available?
 
Associate
Joined
2 Nov 2012
Posts
933
Location
Sussex
Agree with Greg, this bench needs all the CPU muscle you can muster when running high end cards. My 780's not scaling as well as my 7970's did for this very reason. I noticed my GPU utilisation on both cards was down at 60% on one of the scenes towards the end, this was with a i7 [email protected]
 
Man of Honour
Joined
21 May 2012
Posts
31,922
Location
Dalek flagship
Interesting...

I'm testing out my pair of GTX780s (at about 1150Mhz). In the Heaven 4.0 benchmark they're right about where I would expect them to be (~2700 points). However on this benchmark they're a good few hundred points behind the curve... I'm getting ~4200 when I would expect to be around 4700.

Is this benchmark particularly CPU limited? I'm running an old i7-930 at 3.8Ghz right now so that could explain the discrepancy. Also, whenever a scene changes my framerate tanks down to the mid-40s for a short while (while the screen is black), before coming back to ~100fps when the scene is active. Is this the same for everyone? I'm assuming it's loading the scene into memory, but it really drags down the framerate. Is there some form of pre-caching available?

Yes the CPU really holds back multiple GPU setups.

My Titans score almost the same @1080p as they do @1600p

If you run at high resolutions you will get much better GPU scaling.
 
Soldato
Joined
24 Jun 2004
Posts
10,977
Location
Manchester
Thanks guys - I'll have a proper crack at it over the weekend then, with a shiny new 4770k :D

That reminds me - I need to do a few gaming benchmarks before I upgrade. It'll be good to see the difference from the i7 930. The average framerates probably won't be too different in most games, but it would be nice to see if some minimums are smoothed out etc. Have to see what gaming benchmarks I can get hold of.
 
Associate
Joined
2 Nov 2012
Posts
933
Location
Sussex
Top 780's incoming :)

GTX780 SLI (air cooling) 1.2v | GPU1 1202/3506 | GPU2 1215/3506 | 320.18WHQL
i7 [email protected] (water)| Win7 64bit |

Valley-ExtremeHD-singlescreen-gtx780SLI+170.jpg
 
Soldato
Joined
19 Jun 2004
Posts
6,521
Location
n/east-the toon
Hi, well did a quick benchmark yesterday Sunday and l said l would come back with a better overclock. Got up checked e-mail's had a cuppa to steady the nerve's as the old girl has not been benched and overclocked quite so high. So rebooted and entered the Bios set CPU volts to 1.43v at 210x12 = 4.410ghz - memory stay's at 9-9-9-2-1 increased volt's to 1.64v and QPI/VTT VOLTAGE to 1.4125v. Well to my surprise the old girl booted straight into window's no with no problem's and so l benchmarked the following -

SuperPi: 23m, 3DmarkII, 3Dmark:Firestrike, Unigine Heaven Valley, result's below -

Unigine Heaven Valley -

ULTRA - FPS: 30.8 / Score: 1288 / Min FPS: 15.1 / Max FPS: 55.6


The old girl still hot,
Oldphart.:cool:
 
Man of Honour
Joined
21 May 2012
Posts
31,922
Location
Dalek flagship
Please don't get these mixed up.:D

Single HD 7970 @1300/1850
CPU 3970X @4.9
00026.png



2 x HD 7970s @1260/1850
CPU 3970X @4.9
00028x.png



2 x Titans @998/1661
CPU 3930k @5.1
t2pcie3.png

The Good, The Bad and The Ugly.

Which is which is up to you.:p:D
 
Caporegime
Joined
12 Jul 2007
Posts
40,877
Location
United Kingdom
Kaap here's that bench you wanted. This is as far as ive pushed them so far.

i7@4ghz - Will run again at some point with a 5ghz clock
2201mhz - Ram
7950'sx2 @ 1157/1600

13.6 Beta


rhPz1c5.jpg
 
Last edited:
Man of Honour
Joined
21 May 2012
Posts
31,922
Location
Dalek flagship
Kaap here's that bench you wanted. This is as far as ive pushed them so far.

i7@4ghz - Will run again at some point with a 5ghz clock
2201mhz - Ram
7950'sx2 @ 1157/1600

13.6 Beta

Sorry its not on the first screen, i had to alt tab out and setup screenshot in afterburner and im on a fresh install of drivers + oc apps.


2vZ9GLa.jpg

Thanks for the above, I don't think there would be a lot in it if I ran my cards at the same clocks.:)
 
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