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550W PSU check. i5 2500k, crossfire, 2HDD, 1SSD

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November 21, 2013 10:25:19 AM

Hey guys, I'm looking to do some upgrading to my system and was wondering if 550 watts would be enough to power everything. A PSU calculator said I'd be good with 442 watts but I wanted some other opinions. My system:

i5 2500k @ 3.3Mhz overclocking soon to 4+Mhz with a Hyper 212 EVO
Radeon HD7850 2GB
2x4GB kingston ram
2x1TB 7200rpm HDD
CD drive
keyboard, mouse, monitor USB connections

Looking to add an SSD, do they use a lot of power in general? Maybe a Samsung 840 EVO or Pro 256GB. I'm also interested in adding another 7850. Any recommendations on whether or not its worth it? I'll be upgrading to a single GPU in about a year but I want to run games on high in the meantime.

PSU is a 550W OCZ fatality
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

It says efficiency is up to 82% ... so maybe I do need to upgrade?? I'm not too sure about the terminology with PSUs. Also says 80 Plus certified, does that mean its guaranteed to run at 80% or more?

Any info would be much appreciated.
November 21, 2013 10:28:18 AM

An SSD uses basically no power at all. Less than 5w.

That PSU is not the best quality and I would recommend a quality 650w unit for 2 7850s from Antec, XFX, COrsair, Seasonic designed for SLI/Crossfire. Technically 550w is enough, but that PSU is not designed for Crossfire.
November 21, 2013 10:32:17 AM

tiny voices said:
An SSD uses basically no power at all. Less than 5w.

That PSU is not the best quality and I would recommend a quality 650w unit for 2 7850s from Antec, XFX, COrsair, Seasonic designed for SLI/Crossfire. Technically 550w is enough, but that PSU is not designed for Crossfire.


Oh word didn't know that about PSUs... thanks for the suggestions will definitely look in to it. If I end up upgrading my PSU would 650W be ok for the next couple of years? Maybe with one more GPU change next year?

Definitely missed the mark on the PSU I have now, wasn't thinking about future proofing my rig :(  but back than I had limited funds lol.
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November 21, 2013 10:33:05 AM

Yes, 650w is more than enough for ANY single GPU and plenty to use 2 lower end/mid range cards.
November 21, 2013 10:35:13 AM

I agree, the SSD doesn't matter as far as power consumption, but you'll be cutting really close if you add a second GPU, I'd recommend bumping at least to a 650w from a reliable brand.
November 21, 2013 10:56:13 AM

tiny voices said:
Yes, 650w is more than enough for ANY single GPU and plenty to use 2 lower end/mid range cards.

Gotcha, will definitely start looking at models then. Hopefully something good will be on sale for black friday/cyber monday. Thanks!

PepitoTV said:
I agree, the SSD doesn't matter as far as power consumption, but you'll be cutting really close if you add a second GPU, I'd recommend bumping at least to a 650w from a reliable brand.

Word, thanks!

!