View Full Version : Which PSU?

27-07-2013, 10:33 AM
I need a new PSU that will offer lots of upgrading room and expansion options. Currently I use a Raidmax 420 W PSU (which I hear are pretty dodgy).

I have purchased a GTX 560 ti card (I only run things at 1440x900p) and may want to upgrade in the future or run SLI. Also I would like to overclock a bit e.g. 4.0 GHz - 4.5 GHz(I won't use a stock cooler, don't worry). Running quietly and efficiently is quite important to me also. I'm in the $130-$170 price range.

I have found a few. I just don't know which one to get. Any recommendations?

FSP 750W Aurum Series

Antec High Current Gamer Series HCG-750

Corsair CX750M

CORSAIR Gaming Series GS700 (out of stock though :( )

Thanks guys :thumbs:

27-07-2013, 10:59 AM
I'd go any of the corsair or Antec ones, never heard of that other brand so can't comment on that.

I think the industry and enthusiasts alike wildly overestimate the power requirements of PCs for a couple reasons. I'd visit a site like http://www.extreme.outervision.com/psucalculatorlite.jsp and work out;
1. your current power requirements
and then
2. Go nuts and put every bit of hardware you ever think (or wish you could) you'll upgrade to and recalculate.
3. Add a 10-20% margin on top of their recommendation (which already has a margin)

That'll give you a really good Idea of what you actually need. For a single graphics card and overclocked CPU for example you rarely need to exceed 500-600W providing it's a good quality one.

Graphics cards suppliers give an inflated Idea of requirements for a very simple reason - they have no Idea of you other hardware or the quality of your PSU so they have to specify a rating that will be enough even if you have 6 fans & 6 hdds, a massivly overclocked CPU and a cheap < $100 PSU.

This machine with an i7 (stock clocks) and 7970 for example is running on a cooler master 550W PSU with plenty of headroom, chose the supply for it's physical size to fit in a tight space. Normally I go corsair or silverstone. My 2nd PC has an i3, 650Ti boost, 3 Hdd's and is running comfortably off a silverstone 350W SFF PSU (even I get nervous about the rating of the 350W but I've checked the calculation several times and stress tested the thing at 100% CPU/GPU load and all is stable)

27-07-2013, 01:19 PM
Thanks Dugi. :) Yeah It turns out that I'll need something around the 560W to 650W mark. I'd like modular though.

The FSP Tech Power Up review (conclusion page): http://www.techpowerup.com/reviews/FSP/Aurum_CM_750W/9.html
Not really sure what they mean about loose voltage or crossload.

27-07-2013, 02:57 PM
Hard to say, I'd expect loose voltage regulation to mean it didn't stay at 12V during the tests and varied a bit. Crossload I'd guess is testing how loading up one voltage rail effects another.
Just skimming that I'd avoid it and go for Antec, Corsair, Seasonic, Silverstone etc.

Coolermaster that I'm using I don't rate so well but they do have some higher end models that look interesting. I don't think they are rubbish but I'd subtract at least 50W from the rating on their normal models.

Before I started caring about PSU's I bought a bunch of cheapish models and TBH I've never had one fail on me :) The cheapest was probably an AcBel which is one of coolermasters OEM suppliers and a couple of coolermaster and thermaltake cheaper models as well so I've never bought any of the really cheapo brands.

27-07-2013, 10:09 PM
Have a read of this: http://www.gpforums.co.nz/thread/472748/?

29-07-2013, 05:48 PM
Very good icow.

I ended up getting a Corsair CX 750W v3. The modular versions are practically sucked dry of stock.
I also noticed that it is the same PSU used in the last PCWorld Mag's PC Buyers Guide performance PC build.
Should be coming in the mail soon.

29-07-2013, 05:57 PM
alot of peopledont realise that the closer a psu gets to its maximum load the more efficient it will run. until ofcourse you actuly start straining it.

29-07-2013, 06:16 PM
I got the FSP one.
Hasn't arrived yet though so I can't really tell you how good it is. XD

Looks pretty cool as well!

30-07-2013, 07:22 PM
Installed the PSU and the GTX 560 ti and everything is great.
I picked up the card for $150, which is a bonus.

30-07-2013, 08:38 PM
Installed the PSU and the GTX 560 ti and everything is great.
I picked up the card for $150, which is a bonus.


GREAT deal on the card by the way! How did you get it? or should I be asking WHERE?

31-07-2013, 05:09 PM
Trade Me. ;)