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New Power Supply for GTX 660 Ti SLI

post #1 of 7
Thread Starter 
I currently have a PC Power and Cooling MKIII 600W PSU. I bought a second GTX 660 Ti not too long ago, but have been hesitant to use it since I am unsure whether or not my power supply is adequate for two GTX 660 Ti's. I planned on running the cards at stock (although I can't guarantee I won't overclock them). I've done some research on this, but I'm getting mixed responses. So, I'm asking for a answer to whether or not I should get a new power supply to run a pair of 660 Ti's. If I cannot on my current power supply, what power supply should I get?

P.S If I am truly able to run the 660 Ti's on my power supply, I plan on buying two 6+2 PCI-E cables from here: https://shop.pcpower.com/products/description/_6_2_Pin_PCI_Express_cable_for-PPCMK3S400_500_600/index.html
P.S.S See PC in sig for any details on my current components.
Edited by AbdullahG - 7/12/14 at 6:20pm
Cashews
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CPUMotherboardGraphicsRAM
i5 3570K @ 4.4GHz (1.272V) ASRock Z77 Extreme4-M PNY GTX 660 Ti SLI PNY 8GB (2x4GB) @ 1333MHz  
Hard DriveCoolingOSMonitor
Seagate 750GB 7200RPM Arctic Cooling ACFZ13 92MM CPU Cooler Windows 7  Dell S2440L 24" LED Monitor 
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Logitech K520 PC Power and Cooling MKIII 600W Fractal Design Core 1000 Logitech M310 
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Logitech Z130 Speakers 
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Cashews
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CPUMotherboardGraphicsRAM
i5 3570K @ 4.4GHz (1.272V) ASRock Z77 Extreme4-M PNY GTX 660 Ti SLI PNY 8GB (2x4GB) @ 1333MHz  
Hard DriveCoolingOSMonitor
Seagate 750GB 7200RPM Arctic Cooling ACFZ13 92MM CPU Cooler Windows 7  Dell S2440L 24" LED Monitor 
KeyboardPowerCaseMouse
Logitech K520 PC Power and Cooling MKIII 600W Fractal Design Core 1000 Logitech M310 
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Logitech Z130 Speakers 
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post #2 of 7

You're fine with your current PSU, 660 Ti's consume around 130W each at stock. Your 3570K will consume around 100W at that voltage and frequency.

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Samsung 840 Pro 256GB Crucial MX100 512GB Noctua NH-U14S 3x Noctua NF-A14 FLX 
OSMonitorMonitorKeyboard
Windows 10 Pro 64-bit Dell U2713HM Dell U2312HM Ducky Shine 3 Year of the Snake (MX Brown) 
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EVGA SuperNOVA P2 650W Fractal Design Define R5 Black Mionix Naos 7000 SteelSeries QcK 
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Intel Xeon E5-2620 v4 @ 3GHz Matrox G200eH2 4x8GB Kingston Dual Rank ECC DDR4 @ 2133MHz 2x Samsung PM863 120GB in RAID1 
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Intel Core i7-3770K @ 4.3GHz Gigabyte GA-Z77X-UD5H ASUS GeForce GTX 980 Ti STRIX 6GB @ 1500MHz 2x8GB Kingston HyperX Fury DDR3 @ 2400MHz 
Hard DriveHard DriveCoolingCooling
Samsung 840 Pro 256GB Crucial MX100 512GB Noctua NH-U14S 3x Noctua NF-A14 FLX 
OSMonitorMonitorKeyboard
Windows 10 Pro 64-bit Dell U2713HM Dell U2312HM Ducky Shine 3 Year of the Snake (MX Brown) 
PowerCaseMouseMouse Pad
EVGA SuperNOVA P2 650W Fractal Design Define R5 Black Mionix Naos 7000 SteelSeries QcK 
AudioAudioAudioOther
Sennheiser HD 650 Fostex TH-X00 Ebony Parasound Zdac TP-LINK Archer T9E  
CPUGraphicsRAMHard Drive
Intel Xeon E5-2620 v4 @ 3GHz Matrox G200eH2 4x8GB Kingston Dual Rank ECC DDR4 @ 2133MHz 2x Samsung PM863 120GB in RAID1 
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post #3 of 7
Thread Starter 
Well, that's reassuring. I assume I won't have much headroom for overclocking though (minimal to moderate; nothing extreme).
Cashews
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 3570K @ 4.4GHz (1.272V) ASRock Z77 Extreme4-M PNY GTX 660 Ti SLI PNY 8GB (2x4GB) @ 1333MHz  
Hard DriveCoolingOSMonitor
Seagate 750GB 7200RPM Arctic Cooling ACFZ13 92MM CPU Cooler Windows 7  Dell S2440L 24" LED Monitor 
KeyboardPowerCaseMouse
Logitech K520 PC Power and Cooling MKIII 600W Fractal Design Core 1000 Logitech M310 
Audio
Logitech Z130 Speakers 
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Cashews
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 3570K @ 4.4GHz (1.272V) ASRock Z77 Extreme4-M PNY GTX 660 Ti SLI PNY 8GB (2x4GB) @ 1333MHz  
Hard DriveCoolingOSMonitor
Seagate 750GB 7200RPM Arctic Cooling ACFZ13 92MM CPU Cooler Windows 7  Dell S2440L 24" LED Monitor 
KeyboardPowerCaseMouse
Logitech K520 PC Power and Cooling MKIII 600W Fractal Design Core 1000 Logitech M310 
Audio
Logitech Z130 Speakers 
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post #4 of 7
Quote:
Originally Posted by AbdullahG View Post

Well, that's reassuring. I assume I won't have much headroom for overclocking though (minimal to moderate; nothing extreme).

With the stock 660 Ti BIOS, you won't be able to overclock high enough for the card to draw over 180W or so. I'm not too sure how high you can push the voltage with a modified BIOS, but even then I doubt it's anything too extreme.

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Intel Core i7-3770K @ 4.3GHz Gigabyte GA-Z77X-UD5H ASUS GeForce GTX 980 Ti STRIX 6GB @ 1500MHz 2x8GB Kingston HyperX Fury DDR3 @ 2400MHz 
Hard DriveHard DriveCoolingCooling
Samsung 840 Pro 256GB Crucial MX100 512GB Noctua NH-U14S 3x Noctua NF-A14 FLX 
OSMonitorMonitorKeyboard
Windows 10 Pro 64-bit Dell U2713HM Dell U2312HM Ducky Shine 3 Year of the Snake (MX Brown) 
PowerCaseMouseMouse Pad
EVGA SuperNOVA P2 650W Fractal Design Define R5 Black Mionix Naos 7000 SteelSeries QcK 
AudioAudioAudioOther
Sennheiser HD 650 Fostex TH-X00 Ebony Parasound Zdac TP-LINK Archer T9E  
CPUGraphicsRAMHard Drive
Intel Xeon E5-2620 v4 @ 3GHz Matrox G200eH2 4x8GB Kingston Dual Rank ECC DDR4 @ 2133MHz 2x Samsung PM863 120GB in RAID1 
Hard DriveOS
4x WD Red 3TB in RAID5 ESXi 6.5 
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Define
(20 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core i7-3770K @ 4.3GHz Gigabyte GA-Z77X-UD5H ASUS GeForce GTX 980 Ti STRIX 6GB @ 1500MHz 2x8GB Kingston HyperX Fury DDR3 @ 2400MHz 
Hard DriveHard DriveCoolingCooling
Samsung 840 Pro 256GB Crucial MX100 512GB Noctua NH-U14S 3x Noctua NF-A14 FLX 
OSMonitorMonitorKeyboard
Windows 10 Pro 64-bit Dell U2713HM Dell U2312HM Ducky Shine 3 Year of the Snake (MX Brown) 
PowerCaseMouseMouse Pad
EVGA SuperNOVA P2 650W Fractal Design Define R5 Black Mionix Naos 7000 SteelSeries QcK 
AudioAudioAudioOther
Sennheiser HD 650 Fostex TH-X00 Ebony Parasound Zdac TP-LINK Archer T9E  
CPUGraphicsRAMHard Drive
Intel Xeon E5-2620 v4 @ 3GHz Matrox G200eH2 4x8GB Kingston Dual Rank ECC DDR4 @ 2133MHz 2x Samsung PM863 120GB in RAID1 
Hard DriveOS
4x WD Red 3TB in RAID5 ESXi 6.5 
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post #5 of 7
I am running MSI 660ti Power editions in SLI. i had seasonic 620 watt and even with overclocking my cpu. Overclocking GPu was fine too until I did bios mods to increase voltages. I did have to move to 750 watt to keep my pc from shutting down when I changed the bios on the gpu to 1.212v

Yes 600 watts is enough. If you are bios modding your Gpus you are going to need a little more. The MSI power editions Im using have a TDP of 150watts each.
Edited by Wirerat - 7/12/14 at 6:40pm
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128GB sandisk extreme SSD 2 tb Western digital media intel 530 128 gb SSD External LG BD RW 
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EK Coolstream 360mm PE Rad  Gentle typhoon AP-15 X 3 Fractal Design 140mm 1000RPM X3 Fractal Design Venturi High Flow Series 140mm F... 
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OCZ VERTEX 3 90GB 1tb 7200 Seagate hybrid  D5 vario Primo chill 120mm D5 Compression Res 
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Cable box
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Phat Bits
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Lament Box
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CPUMotherboardGraphicsRAM
i7-4790K 4.8ghz @ 1.245v Asus Maximus Hero VI 4GB Asus Strix GTX 980 Gskil Trident 2400 CL10 
Hard DriveHard DriveHard DriveOptical Drive
128GB sandisk extreme SSD 2 tb Western digital media intel 530 128 gb SSD External LG BD RW 
CoolingCoolingCoolingCooling
EK Coolstream 360mm PE Rad  Gentle typhoon AP-15 X 3 Fractal Design 140mm 1000RPM X3 Fractal Design Venturi High Flow Series 140mm F... 
CoolingCoolingCoolingCooling
Bitspower DDC Heatsink Black EK Coolstream XTC 140mm Rad EK Supremecy MX  EK FC980 Strix Water Block 
CoolingCoolingOSKeyboard
swiftech MCP-35X EK XRES 140 DDC Top WIN 7 ULTIMATE smk link 
PowerCaseMouseOther
Seasonic G-750  Fractal Design R5 G700s HDHOMERUN 3 TUNER CABLE CARD 
CPUMotherboardGraphicsRAM
4770k 4.5ghz @1.29v asus z87-A EVGA 4gb GTX 970 FTW 1510mhz 8000mem 1.23v Adata XPG 8GB @ 2400mhz 11-13-13-35-1 
Hard DriveHard DriveCoolingCooling
OCZ VERTEX 3 90GB 1tb 7200 Seagate hybrid  D5 vario Primo chill 120mm D5 Compression Res 
CoolingCoolingCoolingCooling
Swiftech MCR-320 XP 360mm rad Swiftech MCR-320 XP 120mm rad EK Supreme LTX Cpu block Biitspower ACX GTX 970 Water block 
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win7 64bit ultimate G13 Seasonic M211 620 watt Nzxt Guardian 
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post #6 of 7
With your cpu overclock and your gpu's at stock the computer will pull roughly 450W from the wall while gaming, maybe a bit higher when running benchmarks like Heaven, or 3DMark, I'm basing that on my previous setup with 2x660's non Ti's.

If you plan on heavily overclocking you gpu's, I'd grab at least a 700-750W PSU though.
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post #7 of 7
Thread Starter 
Well, I don't plan on modifying the stock BIOS on the cards or pusing the voltage too high, so I guess I'm fine with my current PSU. Overclocking isn't much of a priority; I just wanted to know whether or not it was an option to begin with. Although, I realized I'm going to need two 6 pin splitter cables to run two cards. That shouldn't be any issue. Thanks for the help!
Edited by AbdullahG - 7/12/14 at 6:41pm
Cashews
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 3570K @ 4.4GHz (1.272V) ASRock Z77 Extreme4-M PNY GTX 660 Ti SLI PNY 8GB (2x4GB) @ 1333MHz  
Hard DriveCoolingOSMonitor
Seagate 750GB 7200RPM Arctic Cooling ACFZ13 92MM CPU Cooler Windows 7  Dell S2440L 24" LED Monitor 
KeyboardPowerCaseMouse
Logitech K520 PC Power and Cooling MKIII 600W Fractal Design Core 1000 Logitech M310 
Audio
Logitech Z130 Speakers 
  hide details  
Reply
Cashews
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 3570K @ 4.4GHz (1.272V) ASRock Z77 Extreme4-M PNY GTX 660 Ti SLI PNY 8GB (2x4GB) @ 1333MHz  
Hard DriveCoolingOSMonitor
Seagate 750GB 7200RPM Arctic Cooling ACFZ13 92MM CPU Cooler Windows 7  Dell S2440L 24" LED Monitor 
KeyboardPowerCaseMouse
Logitech K520 PC Power and Cooling MKIII 600W Fractal Design Core 1000 Logitech M310 
Audio
Logitech Z130 Speakers 
  hide details  
Reply
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