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Sgt. Pooh bear
12-19-2010, 04:39 PM
G'day SPUF,

I'm having a small dilemma. I currently own an AMD 5670, but I'm thinking of upgrading to either a GTX460 or 6850 depending on the power requirements. Is it worth it? I want my PC to be quiet.

My questions is this; will a 360 Watt Zalman PSU be enough to power such a card. A review can be found here (http://www.hardwaresecrets.com/article/539), in which the reviewer thinks the PSU is somewhat capable. Just want to know what you guys think.

My systems is as follows (for calculating)

Athlon II X4 640 (3.0Ghz)
4gb DDR3 1600
AMD 5670
Gigabyte GA880A-UD3H Motherboard.

Cheers

OilySuperWillie
12-19-2010, 04:46 PM
you're going to need something beefier than a 360w psu to upgrade to one of those cards

Sgt. Pooh bear
12-19-2010, 04:49 PM
you're going to need something beefier than a 360w psu to upgrade to one of those cards

I knew someone would be quick to say that. Did you read the review? Apparently it's capable of 400 watts. I'm still thinking I'll need a new one but do you think you could flesh out your answers a bit more?

I'm not overclocking, only have 1 HDD and 1 optical drive along with a Xonar Essence ST. It's barely anything.

CenturyChild
12-19-2010, 04:51 PM
PSU Wattage itself means very little, as not all PSUs are the same.

This is why something like a 400W Corsair or Antec will power most GPUs without issue, but a offbrand will need to be at least 550-600Watts just to match what those little 400s are doing.

How many Amps are on the 12V rail and efficiency are most Important.

Look at the lable on the side of the PSU and see what Amperage it has listed for 12V rail.

Brazen
12-19-2010, 04:51 PM
Did you try on-line PSU (http://extreme.outervision.com/psucalculatorlite.jsp) calculator? Make sure to check your components for amperage on the 12V rail.

rotNdude
12-19-2010, 04:55 PM
Get a new PSU. Here is what I use for figuring out if somebody is in the ballpark for power requirements with a system:

http://www.gpureview.com/show_cards.php?card1=636&card2=632
http://mysite.verizon.net/pchardwarelinks/elec.htm

Your CPU is 95W TDP and the 6850 is 127W TDP. That equates to 222W TDP and if you divide that by 12V, you will end up with 18.5 Amps on the +12V rail. Your power supply can only deliver 20 Amps on the +12V rails. The GTX460 draws even more power.

Sgt. Pooh bear
12-19-2010, 04:58 PM
Get a new PSU. Here is what I use for figuring out if somebody is in the ballpark for power requirements with a system:

http://www.gpureview.com/show_cards.php?card1=636&card2=632
http://mysite.verizon.net/pchardwarelinks/elec.htm

Your CPU is 95W TDP and the 6850 is 127W TDP. That equates to 222W TDP and if you divide that by 12V, you will end up with 18.5 Amps on the +12V rail. Your power supply can only deliver 20 Amps on the +12V rails. The GTX460 draws even more power.

Okay, seems fair. But doesn't it have 26 (http://www.hardwaresecrets.com/fullimage.php?image=9621) on the 12v rails? What PSU do you recommend I purchase that is quiet and efficient?

Brazen
12-19-2010, 05:05 PM
That PSU has 2 12V rails, one which can supply 11A and a second that can supply 16A.

madpistol
12-19-2010, 05:06 PM
Okay, seems fair. But doesn't it have 26 (http://www.hardwaresecrets.com/fullimage.php?image=9621) on the 12v rails? What PSU do you recommend I purchase that is quiet and efficient?

Let us know your budget, but I would recommend this:

CORSAIR Builder Series CMPSU-500CX 500W (http://www.newegg.com/Product/Product.aspx?Item=N82E16817139018)

Basic, quiet, and efficient. That's just what you need for that build.

101horsey101
12-19-2010, 09:25 PM
Let us know your budget, but I would recommend this:

CORSAIR Builder Series CMPSU-500CX 500W (http://www.newegg.com/Product/Product.aspx?Item=N82E16817139018)

Basic, quiet, and efficient. That's just what you need for that build.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139017
25$, currently runs my gtx 460 and phenom II x4. 28A on 12V may not be upgradeable though, so spending more might be best if you can.

Doctor Daft
12-19-2010, 09:35 PM
i'm running a phenom 955 (95 watt) and a gtx 460 on

http://www.newegg.com/Product/Product.aspx?Item=N82E16817371033&Tpk=antec%20380

i even overclocked the 460 pretty highly.

if you have a decent brand like antec, corsair, OCZ, seasonic, etc. you should be ok. also a lower CPU wattage would be better for you.

the only issue i ever ran into was not having a second pcie 6 pin. but the 460 actually comes with a 2x 2 molex to 6 pin connector, so in that way i was set. (it was my first time buying a higher up card, so i wasn't aware they actually came with them)