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Will my PSU support my new rig?

Last response: in Components
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November 28, 2009 12:59:05 AM

So, I just ordered some Black Friday deals off of Newegg and after I ordered my items I began to worry will my PSU be able to power up my stuff?

The only thing I'm taking out of my old rig is my

XFX ATI Radeon 4870 1GB GDDR5
Rosewill Stallion Series RD500-2DB 500W ATX12V
1 250GB Internal HDD


My new rig should look like this

AMD Phenom II X4 955 3.2GHz AM3 125W TDP
ASUS M4A79XTD EVO AM3 AMD 790X ATX
A-DATA 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)
XFX ATI Radeon 4870 1GB GDDR5
Rosewill Stallion Series RD500-2DB 500W ATX12V
RAIDMAX SMILODON ATX-612WB Black 1.0mm SECC Steel ATX Mid Tower
1 250GB Internal HDD

Will the PSU be able to handle the rig?

More about : psu support rig

a c 248 ) Power supply
November 28, 2009 1:05:42 AM

That rosewill PSU doesnt stand a chance. Since you got a crossfire capable board i would suggest something like the Corsair 750TX.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
If you arent planning to crossfire, consider something like the corsair 550VX
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Both of these are very good PSUs and will last you for many years, rosewill is not known for making good PSUs, the red switch on the back also tells me that it is an older design that doesnt have APFC. Your PSU provides at best 31A on the 12V rails, which is only 1A more than the corsair 400CX and you certainly wouldnt run a 955 and a 4870 on the 400CX even though it provides almost as much power.
November 28, 2009 1:17:20 AM

I'm not planning to go Crossfire and who is talking about a 4890?
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a c 248 ) Power supply
November 28, 2009 1:19:43 AM

whoops sorry i meant the 4870, brain got side tracked, however they both use approximately the same amount of power. The 4890 was a new stepping that could give better performance with the same power usage as the 4870, i just typed the wrong thing.
a c 248 ) Power supply
November 28, 2009 1:22:53 AM

Rosewill is not known for high quality power supplies. Although there have been a couple of improvered models overall they are not high quality.

The general rule of thumb is a high quality 500 to 550 watt power supply with sufficient current (amps) on the 12 volt rail(s) can easily power a system with any single video card made. A high quality 700 to 750 watt power supply with sufficient current (amps) on the 12 volt rail(s) can power a system with two video cards operating in dual mode. There are a few exceptions like the new ATI Radeon HD 5XXX series cards which use less power due to their energy efficiency.

A high quality 500 to 550 watt psu will have a +12 volt rail rated at 40 amps. A high quality 700 to 750 watt psu will have a +12 volt rail rated at 60 amps.

Corsair, PC Power & Cooling, and Seasonic are some of the brands that have a reputation for high quality power supplies that consistently earn high marks in technical reviews. They are reliable, stable, and come with a 5 year warranty. Some of the newer models come with a 7 year warranty. Lately we've been seeing a few other brands offering some high quality units. An example would be the Antec Earthwatts series which is an improvement over Antec’s older series psu’s.

A good choice would be the Corsair VX550 that Hunter 315 mentioned.
a c 248 ) Power supply
November 28, 2009 12:50:16 PM

Very good choice! Seems newegg screwed up the pricing scheme on those two again, definitely go for the 650TX in this case, it will even allow you to run 2 5770 down the line if you need more graphics power.
November 28, 2009 1:07:50 PM

Alright thanks!
a c 248 ) Power supply
November 28, 2009 1:24:16 PM

Yes, the Corsair TX650 is an excellent power supply. Very good sale price too.
!