Just bought everything for a new build. Items are:
Intel Core i5-2400
Corsair Vengeance DDR3 1600 8GB (2x4GB)
Asus Radeon HD 6870
Antec Basiq 500w
I was really hoping I could afford a better PSU in this build but I just couldn't. At least I went with Antec, right? Well, my question is this- is the PSU sufficient enough to push the 6870? I'm waiting til morning to install everything, but if you guys don't think this PSU will get the job done then I will return it. I really DO NOT want to spend more than what I did on this, but if I must for the safety of my card, I will.
For a system using a single Radeon HD 6870 graphics card AMD specifies a minimum of a 500 Watt or greater power supply. The power supply should also have a combined +12 Volt continuous current rating of 30 Amps or greater and have at least two 6-pin PCI Express supplementary power connectors.
Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Total Continuous Amperage Available on the +12V Rail(s) is the most important factor.
The Antec Basiq Series 500 Watt (BP500U), with its combined +12 Volt continuous current rating of 29 Amps and with one 6-pin PCI Express supplementary power connectors, is borderline sufficient to power your system configuration with a single Radeon HD 6870. You will need to use a dual 4-pin Molex peripheral to 6-pin PCIe adapter for the second 6-pin PCI Express supplementary power connector on the graphics card.
There's no spare capacity available on that power supply to do any overclocking.
Thank you both for your responses. I prefer to shop in-person rather than online, so I don't have access to a lot of different brands. Which Antec or Corsair PSU would you recommend to power my card? I know underclocking can cause a GPU failure and I would hate to be stuck dealing with an RMA for a month with no system.
The Antec EarthWatts Green Series 750W (EA-750 Green) has a combined +12 Volt continuous current rating of 62.5 Amps so how is that worse amperage than the Corsair Enthusiast Series TX650 V2's combined +12 Volt continuous current rating of 53 Amps?
Didn't have the standard TX650, so I picked up the TX650M. From what I read, it isn't fully modular, but this is the only 650w Corsair they had. I hope it does the job as per your recommendation KO. Picked up a CM HAF 922 as well. Pray this build goes well and it lasts me a good 3 years