Overclock.net - An Overclocking Community - View Single Post - Stop recommending 650W-850W power supplies for single card systems

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post #27 of (permalink) Old 06-15-2011, 07:50 AM
Join Date: Jul 2009
Location: Katy, Texas
Posts: 3,804
Originally Posted by ktf View Post
System Type: 1 physical CPU
Motherboard: Regular - Desktop
CPU: Intel Core i5-2500K 3300 MHz Sandy Bridge
Overclocked: 4500 MHz, 1.3 V
CPU Utilization (TDP): 90% TDP
RAM: 2 Sticks DDR3 SDRAM
Video Card: NVIDIA GeForce GTX 570
Video Type: Single Card

IDE HDD 5400 rpm: 5 HDDs
IDE HDD 7200 rpm: 2 HDDs
DVD-RW/DVD+RW Drive: 1 Drive
Sound Blaster w/ Front Bay: Yes
Additional PCI Card (avg): 2 Cards
Regular: 4 Fans 120mm; 3 Fans 140mm;
Keyboard and mouse: Yes
System Load: 90 %

Minimum PSU Wattage: 585 Watts
Recommended Wattage: 635 Watts

Please note that those numbers are relative and do not include GPU OC. I have a 750 W Corsair and I doubt it would handle perfectly another 570 with full OC on both cards and CPU. And efficiency is at its best at around 50 % of PSU power, so I don't see why we should not recommend 650 W for gaming rigs.

A 650 W PSU holding SLI of 570 ? Are you sure ?
Might I suggest the Corsair AX1200?


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