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Is this PSU Sufficient (Seasonic 620W)

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I've purchased the below components, and was pretty settled. Just had a conversation with a friend who thinks 620W might be a little light for the system. I researched it to the point of boredom, and don't ever plan for SLI, but do plan on overclocking my CPU and possibly a little on the GPU. Will the Seasonic 620W cut it?

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($223.79 @ Amazon)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($33.04 @ Amazon)
Motherboard: ASRock Z77 Extreme4 ATX LGA1155 Motherboard ($129.99 @ Microcenter)
Memory: G.Skill Ripjaws X Series 16GB (2 x 8GB) DDR3-1600 Memory ($89.99 @ Newegg)
Storage: Western Digital Caviar Black 1TB 3.5" 7200RPM Internal Hard Drive ($91.77 @ Amazon)
Storage: Samsung 840 Pro Series 256GB 2.5" Solid State Disk ($226.99 @ Mac Mall)
Video Card: MSI GeForce GTX 660 Ti 2GB Video Card ($287.99 @ Microcenter)
Case: Corsair 200R ATX Mid Tower Case ($34.99 @ Newegg)
Power Supply: SeaSonic 620W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($79.99 @ Amazon)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($19.99 @ Microcenter)
Operating System: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit) ($89.98 @ Outlet PC)
Other: Asus PCE-N15 ($26.99)
Total: $1335.50
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-02-03 15:49 EST-0500)

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Power supply Master

PhilH930 said:
I've purchased the below components, and was pretty settled. Just had a conversation with a friend who thinks 620W might be a little light for the system. I researched it to the point of boredom, and don't ever plan for SLI, but do plan on overclocking my CPU and possibly a little on the GPU. Will the Seasonic 620W cut it?

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($223.79 @ Amazon)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($33.04 @ Amazon)
Motherboard: ASRock Z77 Extreme4 ATX LGA1155 Motherboard ($129.99 @ Microcenter)
Memory: G.Skill Ripjaws X Series 16GB (2 x 8GB) DDR3-1600 Memory ($89.99 @ Newegg)
Storage: Western Digital Caviar Black 1TB 3.5" 7200RPM Internal Hard Drive ($91.77 @ Amazon)
Storage: Samsung 840 Pro Series 256GB 2.5" Solid State Disk ($226.99 @ Mac Mall)
Video Card: MSI GeForce GTX 660 Ti 2GB Video Card ($287.99 @ Microcenter)
Case: Corsair 200R ATX Mid Tower Case ($34.99 @ Newegg)
Power Supply: SeaSonic 620W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($79.99 @ Amazon)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($19.99 @ Microcenter)
Operating System: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit) ($89.98 @ Outlet PC)
Other: Asus PCE-N15 ($26.99)
Total: $1335.50
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-02-03 15:49 EST-0500)


Hi - your friend is mistaken - the Seasonic 620 is a lot more than you need for
a system with one 660ti. realhardtech suggests a quality 450w unit and a minimum
of 24a on the +12v rail(s). You plenty more of both, you are good to go.

Tom
Power supply Master

to back up toy's comments and prove your friend is clueless



you won't even break 350w total system power while gaming with a single GTX660ti

CPU: Intel Core i7-3960X @ 4.3GHz
Motherboard: EVGA X79 SLI
Chipset Drivers: Intel 9.​2.​3.​1022
Hard Disk: Samsung 470 (256GB)
Memory: G.Skill Ripjaws DDR3-1867 4 x 4GB (8-10-9-26)
Case: Thermaltake Spedo Advance

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