Is my PSU good enough for an XFX R9 270x DD Black?

Shain Taylor · Feb 10, 2014

So, I wanted to upgrade my GPU from an Asus HD7770 DirectCU to an XFX R9 270x DD Black...

My problem is that my PSU is a Cooler Master GX 550w. I know they aren't the best, but I got it for £45 and it was all that I could afford at the time

This is my current rig -
AMD FX-8350 at standard clocks
1 Hitachi 1TB 7200 RPM HDD
1 Maxtor 140GH 7200RPM HDD
1 WD Green 1TB HDD
Asus Sabertooth 990fx rev2.0
8 case fans
1 fan controller

If it means I ditch a hard drive I will do that, but I need to know if my PSU will be capable of handling the 270x with those components above. As far as I know my PSU produces 45A on the 12v rail....
Thankyou

dashboy1998 · Feb 10, 2014

It will work.

HugoStiglitz · Feb 10, 2014

yes as far as i can tell it should be fine.
ditching hard drives would not make a decent difference in power as they are quite lot to begin with.

CPU & graphics cards are about the biggest components you get.

ko888 · Feb 10, 2014

For a system using a single XFX Radeon R9 270X Black Edition DD 2 GB graphics card a minimum of a 500 Watt or greater system power supply is recommended. The power supply should also have a maximum combined +12 Volt continuous current rating of 34 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!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) is the most critical factor.

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. The additional amount required will depend on the magnitude of the overclock being attempted.

The Cooler Master GX 550W (RS-550-ACAA-D3) power supply unit, with its maximum combined +12 Volt continuous current rating of 44 Amps and with two (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with a single XFX Radeon R9 270X Black Edition DD 2 GB graphics card.

Each hard disk drive would only be drawing on average around 10 Watts.

I wouldn't recommend high overclocking of the CPU though, since that could drastically increase power consumption and exceed what the PSU would be able to deliver. A mild OC of the CPU should be fine.

Dark Lord of Tech · Feb 10, 2014

It's sufficient , but I would upgrade to a more reliable power supply.

This would have been the better choice.

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply (£45.00 @ Aria PC)
Total: £45.00
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-02-11 00:19 GMT+0000)

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Is my PSU good enough for an XFX R9 270x DD Black?

Shain Taylor

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ko888

dashboy1998

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HugoStiglitz

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ko888

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Dark Lord of Tech

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