Will my 460w psu take it?

[nC3rtainity]

I have got a Cooler Master Xtreme Power Plus 460 watts
http://www.coolermaster.in/product.php?product_id=3686

So now I am planning to replace my hd4670 with a gtx560ti(384 cores) or a hd6950 2gb.
According to wattage both cards should just barely run on my psu,but I cant understand
the deal with the 12V rail thing

its says 12V1 and 12V2 both have 18A so thats 12x18=216w on each rail right? :S

 

[Rugger]

What are you complete system specs? Will you be overclocking the GPU or CPU?

 

[nC3rtainity]

ohh sry forgot

Phenom II 965 3.4ghz(stock)
Asus M4A785tdv evo
2 gb ddr3 1333mhz
500 gb hdd 5400rpm
dvd rw
2x 120mm fans

if i am going to use this psu i wont be overclocking i rather use epu engine to underclock my processor and reduce CO2 emission

but will consider OCing if this psu isnt enough and would have to invest in a new one.

 

[Rugger]

A review of your PSU from a reputable site: http://www.hardwaresecrets.com/art [...] iew/550/10
Even though you have (2) 12V rails with 18A on each rail, the max wattage for the both 12V rails is 312W...26A. The GTX 560ti requires a 500W PSU with a minimum of 31A on the 12V rails and the HD6950 requires a 500W PSU with a minimum 30A on the 12V rails. The Coolermaster Extreme Power Plus 460W is not sufficient to power your planned upgrade.

 

[Rugger]

A great deal on a nice PSU right now is the OCZ ModXstream 500w: http://www.newegg.com/Product/Product.aspx?Item=N82E16817341016&Tpk=modxstream%20500w
$34.99 after MIR and instant discount.

The OCZ ZS 550W is $44.99 after discount and MIR: http://www.newegg.com/Product/Product.aspx?Item=N82E16817341047&Tpk=ocz%20zs%20550
I'd go for this one if the money was there.

You have to wait a little bit for the rebates, but both of those are really good deals.

 

[Rockdpm]

a 560 ti would run off that power supply but wouldn't leave much room for the CPU.

You need a more heft power supply. perhaps anywhere from a 500-600watt PSU

 

[de5_Roy]

i recommend replacing the coolermaster psu with a corsair cx500 v2 or seasonic s12ii 520w or antec 500 80+ psu. you could also add 2-6 gb more ddr3 1333 ram.

its says 12V1 and 12V2 both have 18A so thats 12x18=216w on each rail right? :S

no. each +12v rail can theoretically pull 216w maximum, both rails will pull 312w together. look at the ratings numbers again.
http://www.hardwaresecrets.com/fullimage.php?image=10157
here's it's review
http://www.hardwaresecrets.com/article/550

 

[Rugger]

a 560 ti would run off that power supply but wouldn't leave much room for the CPU.

And that CPU is a power hog....140W TDP.

 

[nC3rtainity]

ok ppl looks like i gotta change my plans well it was good that i came across this +12V rail thing else I would have bought my graphic card first thing in the morning

i found a good deal for a Corsair CX600
http://www.corsair.com/builder-series-cx600.html

that should do the trick huh ?

 

[nC3rtainity]

And that CPU is a power hog....140W TDP.

mine is the C3 revision not C2 so its 125 watts ^_^

 

[Rugger]

How much for the CX600? You really don't need that much power...a good quality 500W would be sufficient. I'd go for the OCZ ZS 550W over the CX600; less expensive and is 80+ Bronze.

 

[nC3rtainity]

around $50 2 months old he gave reason that it wasnt enough to power his zotac gtx 560 ti amp!

 

[Rugger]

$50 is a good deal on that PSU, but considering you can get a new ZS for less after rebate....
The CX600 has more than enough juice to run a 560ti.

Edit: Modern PCs consume a lot less power than most people think. Read this article from SPCR: http://www.silentpcreview.com/article1245-page1.html

 

[nC3rtainity]

k man thanks a lot for your help il be sure to check it properly before taking i.

 

[nC3rtainity]

Best answer selected by nC3rtainity.

 

[Rugger]

No problem - glad I could help!