GPU upgrade concerns

khenderson42

Honorable
Jul 22, 2013
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10,630
In the process of upgrading my rig. Basically a complete overhaul. I am running on:
1x Z77a-G45, 2x 4gb RAM, 1x Seagate 2tb 7200rpm hdd, 1x 64gb Crucial M4 SSD, 1x DVD RW, 4x USB 2.0, 2x USB 3.0, 3x 120mm LED fans and 1x 80mm LED fan + Cooler Master Hyper 212 Evo fan. I also have 1 evga gtx 660 SC but I intend to buy another and SLI if I can as iitis cheaper than a gtx 680 and gives better performance. My question is will my Antec Neo Eco 620w psu be enough to run all of this? The PSU calculator I did said I'd only need 490w but I am doubtful. Thanks for reading this, I realise it is a tad long winded. Also my rough calculation estimates it needs 44 Amps on the 12V Rail, my PSU supports 48 Amps.
 

khenderson42

Honorable
Jul 22, 2013
51
0
10,630
Yeah it's 620w continuous, it's peak is 720w according to the website I bought it from (scan.co.uk) it is not the C version however, it is a Hybrid modular PSU, meaning I can buy another PCIE 6-Pin for it or just use the 2 Molex to 6-Pin adapter. It claims to be SLI and Crossfire ready but could mean for cards which use less power. I just updated the PSU and hadn't thought about this until it was too late and until I get a job upgrading the PSU again is out of the question I am afraid.