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Asus GTX 770's in SLI Underperforming???

post #1 of 23
Thread Starter 
This is my first post to this forum so bear with. I've built a few PCs over last decade but the past few months I got bit by the OC bug and benchmarking my hardware. I just recently(2 months ago) built a brand new computer so I believe all of my hardware is still up to date along with all of my drivers.(I check drivers weekly) Specs are: Asus Sabertooth 990FX, AMD FX-8350(OC to 4.4), 16gigs of Corsair XMS3 memory running at 1600MHz and a pair of Asus GTX 770's 2GB in SLI(medium-high OC), and running Windows 8.1. If you need more info on my rig, I can supply it later this evening with screen shots as I am at work at the moment. My computer is air cooled but I know its not the heat because of my setup of fans and monitoring everything. My (2) 770's never get above 63*C and CPU doesn't get above 52*C.
I have been using Heaven 4.0 to benchmark my GPU's and getting a score of 1520 at 60.3FPS with a min FPS of 22.8 and a max FPS of 125.7. My monitor is a 22" and the resolution is 1680 x 1050 and Heaven settings are set on EXTREME. It seems about 8-16FPS slow. From what I've been veiwing on the top 30 Heaven scores and other forums, my cards seem to be under performing. http://www.overclock.net/t/1235557/official-top-30-heaven-benchmark-4.0-scores Maybe I'm just expecting too much?
Does this have anything to do with my CPU? I noticed that on that list that most users are using Intel chips and it's an AMD thing. I though Heaven mainly ran off the GPU(s).
I know that evey card is never the same and I don't think OCing the poop out of my GPU's would get me to those scores either. I can post a screen shot of the OC I put on my card and all other specs later this evening but the OC that I use on my GPU's is pretty near the max limits.
On a side note I can max out most of everything on Crysis 3 and run at 60FPS 98% of the time while playing and using FRAPS. I can run all my games(Fallout NV, Far Cry 3, Skyrim, Borderlands 2, Theif, etc.) with the setting maxed out and run at 60FPS all day long. I'm happy with the performance on my games and I think that's what matters. But I will be upgrading to a 28" 2560 x 1440 monitor soon and want to be sure my 770's will handle it. Maybe I'm just nuts or misinformed. I just wanna see what you guys think and or know.

Thanks
Edited by oDizz82 - 4/8/14 at 1:37pm
post #2 of 23
It's possible that the 8350 is holding your benchmarks back. A way to test that would be to put it back at stock (4.0) and run the test again. If your framerate drops even more then its the CPU. There is something else, what PSU are you running on? A too weak PSU can cause stability issues (And outright shutdowns) which can hurt performance.
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CPUMotherboardGraphicsGraphics
AMD FX 8320  Asus Sabertooth 990FX R2.0 MSI Radeon 7950 MSI Radeon 7950 
RAMHard DriveCoolingOS
8GB Crucial Ballistix Sport 1600mhz Samsung 470 SSD Corsair H80i Windows 7 64 Bit Home Premium 
PowerCase
Corsair HX850 Coolermaster HAF 932 
CPUMotherboardGraphicsRAM
Intel SU7300 Core2Duo 1.6 Ghz Alienware OEM Nvidia 335m 8 GB PNY memory 
Hard DriveOSMonitor
Samsing 840 SSD Windows 7 Home Premium 64-Bit Generic PNP monitor @ 75hz 
CPUGraphicsRAMHard Drive
Snapdragon 801 @ 2.5 Ghz Adreno 330 3 GB 32 GB  
CoolingOSMonitor
Blow on it Android 4.4.4 1920x1080 LCD 
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The Sleeper
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Sony Xperia Z3
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CPUMotherboardGraphicsGraphics
AMD FX 8320  Asus Sabertooth 990FX R2.0 MSI Radeon 7950 MSI Radeon 7950 
RAMHard DriveCoolingOS
8GB Crucial Ballistix Sport 1600mhz Samsung 470 SSD Corsair H80i Windows 7 64 Bit Home Premium 
PowerCase
Corsair HX850 Coolermaster HAF 932 
CPUMotherboardGraphicsRAM
Intel SU7300 Core2Duo 1.6 Ghz Alienware OEM Nvidia 335m 8 GB PNY memory 
Hard DriveOSMonitor
Samsing 840 SSD Windows 7 Home Premium 64-Bit Generic PNP monitor @ 75hz 
CPUGraphicsRAMHard Drive
Snapdragon 801 @ 2.5 Ghz Adreno 330 3 GB 32 GB  
CoolingOSMonitor
Blow on it Android 4.4.4 1920x1080 LCD 
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post #3 of 23
Thread Starter 
I have run Heaven on stock CPU settings and the score didn't change.
My PSU is a Corsair RM750. When I went to a PSU calculator site, I was barely under the the recomended but I was under with all of my hardeware specs selected.
I've also made sure the SLI radio button is checked the Nvidia control panel. So I do know the SLI is actually turned on lol
post #4 of 23
Hmm, im not sure its enough. I ran my 8320 @4.4, 7950 and 6850 all OC'd and all running full bore off that i got a shutdown. Could be something else though, are you running fairly new drivers?
Edited by Deadboy90 - 4/8/14 at 2:42pm
The Sleeper
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Sony Xperia Z3
(7 items)
 
CPUMotherboardGraphicsGraphics
AMD FX 8320  Asus Sabertooth 990FX R2.0 MSI Radeon 7950 MSI Radeon 7950 
RAMHard DriveCoolingOS
8GB Crucial Ballistix Sport 1600mhz Samsung 470 SSD Corsair H80i Windows 7 64 Bit Home Premium 
PowerCase
Corsair HX850 Coolermaster HAF 932 
CPUMotherboardGraphicsRAM
Intel SU7300 Core2Duo 1.6 Ghz Alienware OEM Nvidia 335m 8 GB PNY memory 
Hard DriveOSMonitor
Samsing 840 SSD Windows 7 Home Premium 64-Bit Generic PNP monitor @ 75hz 
CPUGraphicsRAMHard Drive
Snapdragon 801 @ 2.5 Ghz Adreno 330 3 GB 32 GB  
CoolingOSMonitor
Blow on it Android 4.4.4 1920x1080 LCD 
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The Sleeper
(10 items)
 
 
Sony Xperia Z3
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CPUMotherboardGraphicsGraphics
AMD FX 8320  Asus Sabertooth 990FX R2.0 MSI Radeon 7950 MSI Radeon 7950 
RAMHard DriveCoolingOS
8GB Crucial Ballistix Sport 1600mhz Samsung 470 SSD Corsair H80i Windows 7 64 Bit Home Premium 
PowerCase
Corsair HX850 Coolermaster HAF 932 
CPUMotherboardGraphicsRAM
Intel SU7300 Core2Duo 1.6 Ghz Alienware OEM Nvidia 335m 8 GB PNY memory 
Hard DriveOSMonitor
Samsing 840 SSD Windows 7 Home Premium 64-Bit Generic PNP monitor @ 75hz 
CPUGraphicsRAMHard Drive
Snapdragon 801 @ 2.5 Ghz Adreno 330 3 GB 32 GB  
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Blow on it Android 4.4.4 1920x1080 LCD 
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post #5 of 23
Thread Starter 
My computer has never had a shut down. It has frozen when I was OC'ing the tar out of my GPU's and running Heaven 4.0 but that's it. I will go back to that PSU calculator page this evening after work and get a screen shot of it and all my other hardware.
All drivers are up to date. I actually just installed the new beta Nvidia driver. Thought that might have something to do with it. Ending up going back to the previous driver, but it had no effect no matter which of the two drivers I was using. I also messed around in the Nvidia control panel but had no change in results. Maybe I'm just expecting too much out of these GPU's? Like I said earlier, all my games look and run extremely well. They rarely ever dip below 60FPS with settings near or at maximum. No issues in stuttering or lag or anyhting. IDK???
Edited by oDizz82 - 4/8/14 at 2:36pm
post #6 of 23
Quote:
Originally Posted by oDizz82 View Post

My computer has never had a shut down. It has frozen when I was OC'ing the tar out of my GPU's and running Heaven 4.0 but that's it. I will go back to that PSU calculator page this evening after work and get a screen shot of it and all my other hardware.
All drivers are up to date. I actually just installed the new beta Nvidia driver. Thought that might have something to do with it. Ending up going back to the previous driver, but it had no effect no matter which of the two drivers I was using. I also messed around in the Nvidia control panel but had no change in results. Maybe I'm just expecting too much out of these GPU's? Like I said earlier, all my games look and run extremely well. They rarely ever dip below 60FPS with settings near or at maximum. No issues in stuttering or lag or anyhting. IDK???

PSU calculators are not that reliable. Its not really about wattage its about having a solid 12+ rail and good amps on it. I know a guy who would be better at talking PSU's than me, ill ask him to come over here.

Edit: Actually I just realized yours is a gold rated PSU, in that case it should be enough for stock voltages. Are you upping the voltage at all on those 770's? Wait, didnt nvidia stop letting people do that?
Edited by Deadboy90 - 4/8/14 at 2:44pm
The Sleeper
(10 items)
 
 
Sony Xperia Z3
(7 items)
 
CPUMotherboardGraphicsGraphics
AMD FX 8320  Asus Sabertooth 990FX R2.0 MSI Radeon 7950 MSI Radeon 7950 
RAMHard DriveCoolingOS
8GB Crucial Ballistix Sport 1600mhz Samsung 470 SSD Corsair H80i Windows 7 64 Bit Home Premium 
PowerCase
Corsair HX850 Coolermaster HAF 932 
CPUMotherboardGraphicsRAM
Intel SU7300 Core2Duo 1.6 Ghz Alienware OEM Nvidia 335m 8 GB PNY memory 
Hard DriveOSMonitor
Samsing 840 SSD Windows 7 Home Premium 64-Bit Generic PNP monitor @ 75hz 
CPUGraphicsRAMHard Drive
Snapdragon 801 @ 2.5 Ghz Adreno 330 3 GB 32 GB  
CoolingOSMonitor
Blow on it Android 4.4.4 1920x1080 LCD 
  hide details  
Reply
The Sleeper
(10 items)
 
 
Sony Xperia Z3
(7 items)
 
CPUMotherboardGraphicsGraphics
AMD FX 8320  Asus Sabertooth 990FX R2.0 MSI Radeon 7950 MSI Radeon 7950 
RAMHard DriveCoolingOS
8GB Crucial Ballistix Sport 1600mhz Samsung 470 SSD Corsair H80i Windows 7 64 Bit Home Premium 
PowerCase
Corsair HX850 Coolermaster HAF 932 
CPUMotherboardGraphicsRAM
Intel SU7300 Core2Duo 1.6 Ghz Alienware OEM Nvidia 335m 8 GB PNY memory 
Hard DriveOSMonitor
Samsing 840 SSD Windows 7 Home Premium 64-Bit Generic PNP monitor @ 75hz 
CPUGraphicsRAMHard Drive
Snapdragon 801 @ 2.5 Ghz Adreno 330 3 GB 32 GB  
CoolingOSMonitor
Blow on it Android 4.4.4 1920x1080 LCD 
  hide details  
Reply
post #7 of 23
Thread Starter 
^^^Thank you!!!
post #8 of 23
Hey this is the guys profile, you can PM him:

http://www.overclock.net/u/78996/twocables
The Sleeper
(10 items)
 
 
Sony Xperia Z3
(7 items)
 
CPUMotherboardGraphicsGraphics
AMD FX 8320  Asus Sabertooth 990FX R2.0 MSI Radeon 7950 MSI Radeon 7950 
RAMHard DriveCoolingOS
8GB Crucial Ballistix Sport 1600mhz Samsung 470 SSD Corsair H80i Windows 7 64 Bit Home Premium 
PowerCase
Corsair HX850 Coolermaster HAF 932 
CPUMotherboardGraphicsRAM
Intel SU7300 Core2Duo 1.6 Ghz Alienware OEM Nvidia 335m 8 GB PNY memory 
Hard DriveOSMonitor
Samsing 840 SSD Windows 7 Home Premium 64-Bit Generic PNP monitor @ 75hz 
CPUGraphicsRAMHard Drive
Snapdragon 801 @ 2.5 Ghz Adreno 330 3 GB 32 GB  
CoolingOSMonitor
Blow on it Android 4.4.4 1920x1080 LCD 
  hide details  
Reply
The Sleeper
(10 items)
 
 
Sony Xperia Z3
(7 items)
 
CPUMotherboardGraphicsGraphics
AMD FX 8320  Asus Sabertooth 990FX R2.0 MSI Radeon 7950 MSI Radeon 7950 
RAMHard DriveCoolingOS
8GB Crucial Ballistix Sport 1600mhz Samsung 470 SSD Corsair H80i Windows 7 64 Bit Home Premium 
PowerCase
Corsair HX850 Coolermaster HAF 932 
CPUMotherboardGraphicsRAM
Intel SU7300 Core2Duo 1.6 Ghz Alienware OEM Nvidia 335m 8 GB PNY memory 
Hard DriveOSMonitor
Samsing 840 SSD Windows 7 Home Premium 64-Bit Generic PNP monitor @ 75hz 
CPUGraphicsRAMHard Drive
Snapdragon 801 @ 2.5 Ghz Adreno 330 3 GB 32 GB  
CoolingOSMonitor
Blow on it Android 4.4.4 1920x1080 LCD 
  hide details  
Reply
post #9 of 23
Thread Starter 
Couldn't tell you about all the voltage settings. Still really new to a lot of this. In the OCing software the cards come with, there's barely any wiggle room with voltage
post #10 of 23
Thread Starter 
The stock voltage is at 1.200 I believe. If I go above 1.202 volts, the cards become very unstable when benchmarking
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