5770 and PSU

[Omnific One]

Hey everyone,

I'm looking at putting a HD5770 into my build with a Zigmatek 400 watt PSU. Trouble is, the recommendation is a 450 watt PSU. I picked the PSU for the efficiency (85%) and the fact that it apparently can run at up to 650 watts (http://www.tomshardware.com/reviews/power-supply-psu-80-plus,2746-9.html). So here's the PSU with specs: http://www.newegg.com/Product/Produ...007&cm_re=xigmatek_psu-_-17-815-007-_-Product.

Will it work, especially considering the ratings on the +12 rail?

If so, which of the 5770's would you recommend?

http://www.newegg.com/Product/Product.aspx?Item=N82E16814131330
http://www.newegg.com/Product/Product.aspx?Item=N82E16814150447
http://www.newegg.com/Product/Product.aspx?Item=N82E16814161338&cm_re=5770-_-14-161-338-_-Product
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102873&cm_re=5770-_-14-102-873-_-Product


Full system specs:

Athlon II X4 640 Propus 3.0Ghz
Asus 760 Mobo
4 (2x2) gigs DDR3 PNY
1Tb Samsung Spinpoint F3
Samsung DVD Combo (may upgrade to BD Combo later)


Thanks for any help!

 

[Embra]

Your PSU should be fine.

I would stay away from Power Color personally.

I like Sapphire a lot, XFX is good too. The HIS one should be fine.

 

[JDFan]

SInce you are using a 95W CPU - you should be OK with the 400W PSU. -- as for which one those are all pretty much the same so whichever is the best price would probably be a good choice --- though for the extra $15 I'd probably go with the Sapphire Vapor-x edition for the better cooling.

 

[Omnific One]

So if I'm reading the specs on the PSU right, the "+12V1@20A, +12V2@20A" shouldn't be an issue?

Also, out of these two, which is better?

http://www.tigerdirect.com/applications/searchtools/item-details.asp?EdpNo=5599121&RSort=9&csid=ITD&body=REVIEWS#ReviewStart
http://www.tigerdirect.com/applications/searchtools/item-details.asp?EdpNo=5316156&RSort=9&csid=ITD&body=#ReviewStart

Thanks.

 

[Embra]

Your PSU should be fine.

I prefer this one:

Vapor-X

If money is not so much an issue, this:

MSI Hawk

 

[JDFan]

So if I'm reading the specs on the PSU right, the "+12V1@20A, +12V2@20A" shouldn't be an issue?

Also, out of these two, which is better?

http://www.tigerdirect.com/applications/searchtools/item-details.asp?EdpNo=5599121&RSort=9&csid=ITD&body=REVIEWS#ReviewStart
http://www.tigerdirect.com/applications/searchtools/item-details.asp?EdpNo=5316156&RSort=9&csid=ITD&body=#ReviewStart

Thanks.

More important than the 20A 20A is the combined rating of 32A (384W) -- so it should be fine for the 95W X4 and the 5770 and the rest of your system.

Either of the 2 is fine main difference is the full shroud will run a bit hotter itself but keep case temp a bit lower (the shroud limits airflow around the card itself but vents out the back of the case) while the open model will run a bit cooler itself but raise the case temp a couple degrees (airflow is better around the card but warm air is released inside the case). So which is better depends on the system it is used in. --- For the price though the Vapor-x sapphire linked earlier is what I would go with. (it has a liguid inside the heatsink that turns to gas when heated and back to liquid when cooled so removes the heat better)

But in the long run they are all decent and will work (the 5770 does not use a lot of power so heat dissipation isn't really a problem with them no matter which one you go with.