![]() It also lacks the four 6-pin PCI Express supplementary power connectors needed. It is insufficient to power your system configuration with two AMD Reference Design Radeon R9 270X graphics cards in 2-way CrossFireX mode. The BFG Tech LS Series 550W (LS-550) power supply unit, with its maximum combined +12 Volt continuous current rating of 41 Amps and with one 6-pin and one (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with a single AMD Reference Design Radeon R9 270X graphics card. ![]() The additional amount required will depend on the magnitude of the overclock being attempted. Overclocking of the CPU and/or GPU(s) may require an additional increase to the maximum combined +12 Volt continuous current ratings, recommended above, to meet the increase in power required for the overclock. Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45☌ - 50☌ ambient temperature, is the most critical factor. Also I’m using a high efficiency server psu. The new claymore 11.3 on xmr and my rig pulls 583 watts from the wall. ![]() The power supply should also have a maximum combined +12 Volt continuous current rating of 43 Amps or greater and have at least four 6-pin PCI Express supplementary power connectors. I have 2 x r9 270 they get 420hs,1 x 270x that gets 490hs and r9 280x gets 590 hs with claymore. The power supply should also have a maximum combined +12 Volt continuous current rating of 30 Amps or greater and have at least two 6-pin PCI Express supplementary power connectors.įor a system using two AMD Reference Design Radeon R9 270X graphics cards in 2-way CrossFireX mode AMD specifies a minimum of an 700 Watt or greater system power supply. Western Digital Caviar SE WD2500JS 250GB 7200 RPMĢx Western Digital 500 GB Caviar Blue SATA 3 Gb/s 7200 RPM (WD5000AAKS)įor a system using a single AMD Reference Design Radeon R9 270X graphics card AMD specifies a minimum of a 500 Watt or greater system power supply. VisionTek ATI Radeon HD 4850 512 MB GDDR3 Here is the list of my current components: Overall, I'd prefer not to go over $100 for one. I also have a BFG Tech 550-Watt LS-550 PSU lying around that I bought a few years ago (unused, still boxed), so if that would be enough let me know. I do however, might like to have a PSU in case I do decide to do a computer upgrade in 2-3 years (hoping my current setup can get me so far! )įrom the calculations I've done with the different online PSU calculators (on some, using the HD 7870 as the R9 270x isn't yet available, which I believe is the closest), the answer varies: it goes from as low as 379W to a recommendation of a 700W PSU. I could also consider an additional hard drive, but very likely I would only replace one of the older ones. I don't believe I have enough power for it, so probably also need to consider a PSU upgrade - naturally, I come to you for suggestions and recommendations to this.įuture scenario: I don't overclock and don't expect to do any SLI in the future (although might be good to have the option for multi-GPU). I'm thinking of upgrading my video card to an AMD R9 270x in the next couple of months.
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