hello again guys i need an opinion on a build i have to put together for a client. the 2 graphics cards and cpu he wants and are definite. The rest of the stuff i filled in myself. i used Extreme power supply calculator to calculate the wattage which came to 549watts with 100% load on all components and a 4.6ghz overclock on the CPU here are the specs. in theory the power supply i chose should be adequate but i want a outside opinion on the matter.
Any help will be appreciated. Thank you
Intel Core i5-3570K 3.4GHz Quad-Core Processor
Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler
Gigabyte GA-Z77X-UD3H ATX LGA1155 Motherboard
Corsair Vengeance 8GB (4 x 2GB) DDR3-1600 Memory
Seagate Barracuda 2TB 3.5" 7200RPM Internal Hard Drive
Samsung 840 Pro Series 128GB 2.5" Solid State Disk
2x Gigabyte Radeon HD 7870 Ghz Edition Windforce 3X 2GB Video Card (CrossFire)
Corsair 500R White ATX Mid Tower Case
Antec EarthWatts Platinum 550W 80 PLUS Platinum Certified ATX12V / EPS12V Power Supply
I'd feel a bit uneasy giving a customer a power supply that doesn't meet the listed requirements for the graphics cards. It should work, but it sets you up for issues if the customer has problems and sees you underspec'ed his power supply. AMD say 600W for crossfire, so that's what I would do as a minimum.
Also, you do have to build in 20% overhead in power because capacitors do lose capacity over time. If you are borderline on day 1, you are going to be under water in year 3. I'd probably say 650 or 700, realistically, if you are calculating 550W now.
well i am actually from South Africa so i cant order from America unfortunately. That is a really good price for that PSU you listed but the PSU i linked above i can get so i was just asking if it would get the job done since hes probably gonna overclock the whole system
hmm okay looked for the Samsung 830 but couldn't get it here in south africa. But i was able to find someone who could get me a decent 650watt PSU. Would this get the job done and let the customer be able to overclock both the CPU and GPU's?
SeaSonic X Series X650 80 PLUS GOLD Certified 650Watt