Powersupply for ATI 4850 - Tech Support Forums

washe · July 27th, 2008, 08:13 PM

Im looking to buy this card next month and Ill have probably to invest in a new shinny power supply.

My current one is a Thermaltake Purepower 430W

AC INPUT

115V/230V - 60/50Hz

DC OUTPUT

+3.3V

+5V

+12V

-12V

-5V

+5VSB

430W

Max
Combined
Watts

20A

30A

18A

-

0.5A

0.8A

2.0A

430W

My PC config
Q6600
4GB Ram (2 sticks)
2 HDD
1 DVD Burner

I believe with just 18A it wont suffice to hold the new video card (if it could would be awesome due I wont have to invest in a new one)

I have been into buying a new powersupply in awhile..

What are the best bang for the buck at the moment?

Atomic Rooster · July 27th, 2008, 08:30 PM

Best bang for your buck: Antec Basiq BP500UB 500W - $34.99

KarmaKiller · July 27th, 2008, 08:36 PM

The bad thing about that PSU is the warranty. But other then that, that's a good PSU. I actually used to have one of those until I blew it up.. (long story)
Anywho, My vote is gonna be for the 600w OCZ StealthxStream. It's a quality unit (actually made by FSP) that has a lifetime warranty. Also will power just about anything you need it to.
Mine is currently powering about the same system as you have, except with a 9800GTX and it's been doing great. I've even had 2x9600GT's on here before, and it still ran it fine. With it only costing $53 after MIR, it's a great buy.

EDIT:
But you know, I bet your PSU is gonna be enough. No doubt you'll be cutting it close, your PSU will probably be maxed out, but I bet it could handle it.

washe · July 27th, 2008, 09:37 PM

I remember JPmiller used one website to estimate use..

according to eXtreme Power Supply Calculator Lite v2.5

I need 389W.. I guess my current powersupply will be allright to power it up.

KarmaKiller · July 27th, 2008, 09:50 PM

Wow, according to that thing I need 573watts at full load. I'm cutting it close..

Atomic Rooster · July 27th, 2008, 09:55 PM

According to ATI's specifications, the HD 4850 needs at least a 450W power supply. With only 430W and just 18A on the 12V rail, you may be cutting it close.

SoloCamo · July 28th, 2008, 12:26 AM

Quote:

Originally Posted by Atomic Rooster

According to ATI's specifications, the HD 4850 needs at least a 450W power supply. With only 430W and just 18A on the 12V rail, you may be cutting it close.

Those ratings are overestimated to compensate for all the garbage power supplies out there that maybe rated at "450" watts, but truly don't put out nearly that much; stable at least.

Atomic Rooster · July 28th, 2008, 12:51 AM

I keep hearing that Solo, but I have never seen where any of the manufacturers have actually said that.

washe · July 28th, 2008, 02:42 AM

Quote:

Originally Posted by Atomic Rooster

I keep hearing that Solo, but I have never seen where any of the manufacturers have actually said that.

The powersupply as been workng strong for the last year, Ill be worried if it were name random PS..

Ill will give it a try and upgrade it as soon I get more cash

batmeat · July 28th, 2008, 01:18 PM

My rig according to that website says I need 557 watts. Washe, Newegg has the Corsair 750watt PS for $120.00 with a $20.00 rebate going on right now. It's what I use.