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**Official Unigine Valley Leaderboard**

I did do a run at 5898*1080 and scored around 7% higher than my previous best with the 7970's which were clocked at 1140/1650 from memory. Not to bad was hoping for more. At 1080p my 7970's gave near 100% scaling. Will have to try the PCI-E 3 hack and see if that makes a difference.

P.S. I subsequently discovered that my second card is boosting to 1016, according to Nvidia Inspector.
 
stephenb said:
Using the full screen render test in GPU-Z (v0.7.1) the second card starts off at PCI-E 2 but then drops back to 1.1 after 5-6 seconds.
Click to expand...

Yeah this is because GPU-Z won't actually put the 2nd card into full-speed. Try this:

nvidia control panel -> manage 3d settings -> global settings -> power management mode -> prefer maximum performance

Bare in mind like this though the cards won't clock down fully when not being used (my 670s stay at ~700Mhz instead of going down to 324Mhz when this setting is on).
 
Thanks Deceptor, just tried your suggestion but it still shows the second card as running at PCI-E 1.1 Probably has something to do with the beta motherboard BIOS I'm having to run. Nice score on your 670's BTW, will get you up there on the dual GPU leader board.


Anyway new single card score for me :)

GTX 780@+160 GPU/MEM, i7 [email protected], 320.18WHQL, Win7 64bit

Valley-ExtremeHD-singlescreen-gtx780+160.jpg
 
stephenb said:
Thanks Deceptor, just tried your suggestion but it still shows the second card as running at PCI-E 1.1 Probably has something to do with the beta motherboard BIOS I'm having to run. Nice score on your 670's BTW, will get you up there on the dual GPU leader board.
Click to expand...

I wouldn't worry really, when I ran the same test MSI Afterburner showed 0% usage on the 2nd card for me and the usual 324Mhz clock so it was running in PCI 1.1 mode so clearly the GPU-Z test isn't working the way it should. Perhaps try running Valley in windowed mode and seeing when the main GPU-Z shows for the lane speed? I know when I do that both are reporting x8 for me.

That single card score is pretty high too! I remember only being able to get ~1,900 on my 680 (modestly clocked).
 
stephenb said:
Thanks Deceptor, just tried your suggestion but it still shows the second card as running at PCI-E 1.1 Probably has something to do with the beta motherboard BIOS I'm having to run. Nice score on your 670's BTW, will get you up there on the dual GPU leader board.


Anyway new single card score for me :)

GTX 780@+160 GPU/MEM, i7 [email protected], 320.18WHQL, Win7 64bit
Click to expand...

What fan speed % does the card get to on auto fan during this benchmark? And your temperature? Do you have to setup a custom fan curve to stop boost from dropping back?
 
I slightly modified the EVGA Precision X fan profile. On this bench temperature gradually gets up to 70C and then hovers around there. Fan speed is around 63% at this temperature. Boost was pegged at 1162.

GTX780%20fan%20profile.jpg
 
Deceptor said:
I wouldn't worry really, when I ran the same test MSI Afterburner showed 0% usage on the 2nd card for me and the usual 324Mhz clock so it was running in PCI 1.1 mode so clearly the GPU-Z test isn't working the way it should. Perhaps try running Valley in windowed mode and seeing when the main GPU-Z shows for the lane speed? I know when I do that both are reporting x8 for me.....
Click to expand...
Thanks - ran it in windowed mode and GPU-Z reporting both cards running at PCI-E 2. Definitely got a CPU bottleneck though, just ran it in SLI and on one of the scenes GPU usage was down at 65% on both cards. Trying to hold out for Ivybridge-E and a 4930K, just wish Intel would hurry up!


SLI (x2) GTX 780@+160 GPU/MEM, i7 [email protected], 320.18WHQL, Win7 64bit

Valley-ExtremeHD-singlescreen-gtx780SLI+160.jpg
 
EVGA GTX670 FTW
Boost: 1267MHz
Memory: 1774MHz
Etc: i7 3820 @4.5GHz, Rampage IV Gene, 2x4GB Samsung Green @2000MHz CL9, Windows 8 Pro 64.

00011u.png
 
Last edited:
Ask me no questions and i will tell you no lies. ;)

Wanted to see how gimped xfire performs. If i can only have one entry, don't bother submitting this.

i7 @5ghz
2x7950 @1100/1575
Crossfire @x16-x4 Pci-e 2.0

Fps: 83.2
score: 3482

13.6 Beta + 13.5 Caps

EXhrS2N.jpg
 
Jony27 said:
Was just pondering with that setup, having Xfire 7870XTs at 16x4x speeds whether it's worth it to get a motherboard that supports 8x8x or not :o
Click to expand...

I will come back to you in a day or two with some solid answers regarding that. A new motherboard is en route. I am taking a few benchmarks now so i can compare.

I have to say, im quite impressed with how a gimped pci-e lane performs. If you're on pci-e 3.0 i wouldn't hesitate for x16 x4 multi gpu setup. If like me you're on pci-e 2.0 though that might be a different matter.
 
Yeah, I was reading the article on Tomshardware about the lane speeds although hey tested a HD6950.
And it is very dependent on the games too how much loss in performance there will be.
But I am still looking forward with your results :D
 
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