Recommend a psu for small system

the_director

the_director

the_director

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Moving to a matx case and currently have a Superflower 1200w platinum that is complete overkill.

I have a Sniper M3 z77 motherboard, 3770k, 16gb ram, a grx 970, 2 ssds, 2 hard disks, corsair h100 and a blue ray drive.

What sort of wattage would I need - I expect to only ever have one gpu, but I still think I might be tempted to go sli I'm future with a cheap 970...

Any recommendations?
 
Evga's P2 750 and 850 units aside from having great properties in general on the electrical size are fairly short units coming in at 16.5cm's. 750watts would have no bother with that build and pair of 970s but 850 does give you that flexibility for a tiny bit more.

https://www.overclockers.co.uk/evga...-platinum-modular-power-supply-ca-028-ea.html

https://www.overclockers.co.uk/evga...-platinum-modular-power-supply-ca-027-ea.html

Likewise super flowers equivalent units being the same platform anyways are also very similar.

https://www.overclockers.co.uk/supe...us-platinum-power-supply-black-ca-040-sf.html

https://www.overclockers.co.uk/supe...platinum-power-supply-gunmetal-ca-049-sf.html

All bar the 850 super flower is seemingly out of stock, but should be good units to wait for IMO.
 
What case are you moving to? Some smaller cases have a max length of psu so that could dictate which unit you can go for. The Superflowers start at 165mm long so are no good for the likes of the Bitfenix Prodigy which needs a psu with a max length of 160mm.

Single card then look at a good 550w unit. Dual 970's will run fine off a 650w unit but I would rather have a single card solution anyday, especially as you are going m-ATX because the gap between the slots is smaller.
 
The EVGA G2 650W seems like a good option - the 550W unit only seems to be about £5 cheaper elsewhere so makes sense to get the extra 100w for that price.
 
It's worth remembering that 650W G2 comes with 7 year warranty whereas 750W with 10 years. So if you intend to keep the psu for a long time it may be worth paying that £20 or so extra.
 
That's a good point and yes, can't see me wanting to replace it for a long time as I'd never go above 2 gpus and more likely to stay with one - and gpus are getting less power hungry anyway.
 
It used to be and even the packaging states 7 years. Corsair announced it a couple of months ago that they extend warranty to 10 years on RMx, RMi, HXi, AX and AXi ranges. Checked with their website before buying my AX760 a few days ago.
 
Oops I've been convinced AX was also 10 years... Apparently it isn't, could've gone for cheaper RMx which I considered. Wonder if anyone from Corsair could comment why.
 
After much deliberation and getting my matx board into the Corsair 350D I decided on the compact Corsair RM 650X - with 10 year warranty it'll be powering a single powerful GPU or possible lower-end SLI / Crossfire setup for many years to come.

Thanks for all the advice.
 
the_director said:
After much deliberation and getting my matx board into the Corsair 350D I decided on the compact Corsair RM 650X - with 10 year warranty it'll be powering a single powerful GPU or possible lower-end SLI / Crossfire setup for many years to come.

Thanks for all the advice.
Click to expand...

Personally I would rather grab the 650 G2 or 650 GS with the latter being made by Seasonic and the G2 Super flower which are imo better than CWT whom yes, make decent power supplies but aren't as good as the others mentioned.
 
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