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Average GTX 260 SLI Scaling?

post #1 of 5
Thread Starter 
I received my 2nd GTX 260 (BFG) in the mail and this is my first time doing a SLI setup. However I am noticed wierd numbers, and am hoping to get this cleared up. I dont know if this is average or not, I ran Vantage, crysis and heaven benchmark to compare. They are OCd to 648/1406/1150

Crysis:
Quote:
*Note: Second monitor is idling with wallpaper and EVGA Precicison graphs on it
Enabled
Run #1- DX10 1920x1080 AA=2x, 32 bit test, Quality: Very High ~~ Overall Average FPS: 31.525 (Second monitor in GPU2 Slot 1)
Run #1- DX10 1920x1080 AA=2x, 32 bit test, Quality: Very High ~~ Overall Average FPS: 31.21 (Second monitor in GPU2 Slot 2)
Run #1- DX10 1920x1080 AA=2x, 32 bit test, Quality: Very High ~~ Overall Average FPS: 27.745 (Second monitor in GPU1 Slot 2)
Run #1- DX10 1920x1080 AA=2x, 32 bit test, Quality: Very High ~~ Overall Average FPS: 36.63 (Single Monitor Only)


SLI disabled
Run #1- DX10 1920x1080 AA=2x, 32 bit test, Quality: Very High ~~ Overall Average FPS: 18.615
Vantage:


Heaven


*So is this average?
*Is there any way to fix the huge FPS loss from having a second monitor?
*Will swapping the card so instead of it being my EVGA card then BFG, it will be BFG then EVGA yield any difference?
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post #2 of 5
From what I experienced with my GTX 260s, yes, that is pretty normal. Their range of scaling varies from application to application. Some things will be 75% and others up to 90%. I saw the most improvement in games. If you plan to OC them and such, you should hit about 20k+ in GPU score.
post #3 of 5
Pretty average, SLI on the 2XX series never scaled as well as the 4XX and 5XX cards, so 70 - 80% increase in performance is pretty average. Your losing the FPS because you are having to power two display resolutions, no way around that, and lastly, no swapping around the cards won't make any difference.
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post #4 of 5
Two GTX 260 216s are just barely shy of a 295. So yeah, that's very nice scaling.
     
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Intel Core i5-6300HQ Dell Proprietary 4GB Nvidia GTX 960M Samsung 12GB (1x8GB 1x4GB) DDR3L 1600 MHz 
Hard DriveHard DriveCoolingOS
256GB SanDisk M.2 SSD 1TB HGST 7.2k HDD Custom Cooling by Dell Solutions Windows 10 Home 64-Bit 
MonitorKeyboardPowerMouse
15.6" 1920x1080 IPS Screen Dell 130w PSU Logitech G602 Wireless 
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Xtrac 'Ripper' Mouse Pad 
CPUMotherboardGraphicsRAM
Intel Core i7-2760QM Toshiba Qosmio X775 Nvidia 1.5GB GTX 560M 8GB DDR3 1333 
Hard DriveOptical DriveCoolingOS
120GB Samsung 830 SSD + 1TB HGST 7200RPM HDD CD/DVD-RW Stock Windows 10 Home 64-Bit 
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post #5 of 5
Thread Starter 
Thanks for all the help, but i have another question. I noticed my primary EVGA card runs at 1.18v and the BFG runs at 1.12v under load. Can this perhaps cause any problems in stability other then overclocking? Should I volt mod the BFG card to 1.18v?
FIRST POST
(13 items)
 
  
CPUMotherboardGraphicsRAM
2500k @ 4.6ghz 1.35v ASUS Z68-V 2x MSI GTX 580s Watercooled @975 mhz 4gb Patriot 
Hard DriveOptical DriveOSPower
320gb x2 WD Raid1 ASUS BDVD Burner Windows 7 x64 Corsair 750a 
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G5 Logitech 
  hide details  
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FIRST POST
(13 items)
 
  
CPUMotherboardGraphicsRAM
2500k @ 4.6ghz 1.35v ASUS Z68-V 2x MSI GTX 580s Watercooled @975 mhz 4gb Patriot 
Hard DriveOptical DriveOSPower
320gb x2 WD Raid1 ASUS BDVD Burner Windows 7 x64 Corsair 750a 
Mouse
G5 Logitech 
  hide details  
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