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Uh Oh something i didnt think about GTX 680 SLi

post #1 of 3
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So I finally bought a second GTX680 Lightning to run SLi and now what I have just thought about it PSU. Is the psu in my sig rig going to be enough for my system now or should I order a new PSU?
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Intel i5 3570K 4.4Ghz @ 1.28v Gigabyte GA-Z77X-UD3H 2 MSI 680GTX Lightning SLi 8GB G.Skill Sniper series 
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Main Rig
(15 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 3570K 4.4Ghz @ 1.28v Gigabyte GA-Z77X-UD3H 2 MSI 680GTX Lightning SLi 8GB G.Skill Sniper series 
Hard DriveHard DriveOptical DriveCooling
500GB HDD 128GB Crucial M4 Samsung Corsair H110 
OSMonitorKeyboardPower
Windows 8 Pro ASUS PB278Q 27" Logitech AZZA PSAZ-1000PT14 1000W Platinum 
CaseMouse
CoolerMaster HAF 932 Advanced Blue Corsair Vengeance M65 
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post #2 of 3

If you didn't overclock your cpu and you put the lighnings back at 680 stock clocks, you would be within 650 watts.

I would get a 750w PSU though.

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RPI Compy
(14 items)
 
Sister's rig
(11 items)
 
Family HTPC
(10 items)
 
CPUMotherboardGraphicsRAM
5820k MSI X99S MPOWER GTX 980 Ti 8x4gb 3000 MHz Crucial DDR4 
Hard DriveCoolingOSMonitor
Samsung 950 Pro Custom WC loop 480mm & 560mm Windows 10 ROG SWIFT 
KeyboardPowerCaseMouse
CM Quickfire TK Greens Corsair RM1000w Custom 3d-printed case Steelseries Rival 
Mouse PadAudio
CSGO Steelseries Creative Aurvana Live! 2 
CPUMotherboardGraphicsRAM
Amd FX 8320 Asus sabertooth 990FX Nvidia GTX 760 4GB g.skill ares 12GB 
Hard DriveOptical DriveCoolingOS
Samsung 850 EVO 250GB HP thingy Phanteks TC12DX Windows 7 
PowerCaseMouse
Raidmax 530w White FD R4 Logitech G400 
CPUMotherboardGraphicsRAM
AMD A10 5800k Asrock pro-4 m His 6770 1GB G.skill 2133 8GB 
Hard DriveOptical DriveCoolingOS
Samsung 840 ssd 128 GB Lg blu-ray combo drive Cooler Master Hyper 212 EVO Windows 7 
PowerCase
Raidmax 530w Silverstone Temjin 
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post #3 of 3
It should be fine.

Sure more headroom can't hurt, but 650W should be enough.

This review has reference gtx 680 sli using 573 during furmark which will most likely never happen and 542 average during gaming from the wall. That puts it as the system pulling ~515W/487W from the power supply if it is in fact running at 90% efficiency (which it probably isnt).
http://www.legitreviews.com/article/1891/12/

Throw in some overclocks (like your lightnings come overclocked) and you might sit around 560-620W instead of 515/487W. Plus they were using a 3960X instead of your 3570k which will draw less power.

I don't see any reason it shouldn't work unless you have a faulty psu.
Edited by icehotshot - 6/26/13 at 12:07pm
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SB goodness
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Core 2 duo
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folder
(8 items)
 
CPUMotherboardGraphicsRAM
2500k @ 4.6ghz,1.47v 24/7 GIGABYTE GA-P67A-UD4-B3 $200 EVGA GTX 970 SSC @ 1505mhz 16gb 2400 SuperSC DDR3 
Hard DriveCoolingOSPower
240gb Corsair Force Series 3 SSD Corsair H100i v2 Windows 7 64-bit SeaSonic X650 Gold 
CaseMouseMouse Pad
CM 690 II Advanced Zowie FK 1 Steelseries SX/Steelseries 9HD 
CPUMotherboardGraphicsRAM
Core 2 Duo E6750 Asus P5n32-e SLI EVGA 8800gt superclocked @ 750/725 gaming/folding 4gb Fatal!ty ddr2 800 
Hard DriveCoolingOSPower
64gb SSD Stock Win 7 64 bit Corsair CX500 
Case
NZXT 
CPUMotherboardGraphicsRAM
Intel Pentium E6300 MSI G41M4-F GTX 460 2gb A-data ddr2 800 
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150gb raptor Ubuntu 13.04 64-bit Coolmax 520W NZXT 
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