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Question about PSUs, and your recommended PSU for my system.

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Hello there!

I've decided to build my first system about week or two ago. Spend a lot of time researching about hardware and etc. Yet there is still couple points I am not sure about and don't want to proceed with out very clear understanding. I am on a budget, max 650$ excluding monitor.

Here is my potential parts for a system:
NZXT Gamma
Intel Core i5-2500
EVGA GTX 460 SuperClocked
4gb Corsair DDR3 1333mhz
500gb 7200rpm HD
PSU about 600-650W ?

So my question regarding PSUs is how do I choose it apart from the watts. I want to buy a EVGA GeForce GTX460 SuperClocked GPU and it seem to need a minimum of 450W. As I understand I need a ~38 amps on 12v rails. Yet I can't really find a psu that would have 38+ amps on each rail. I am probably misunderstanding somewhere. Sure there is PSU with equal and higher parameters, but I can't spend too much on it yet. In the future PSU is the first thing to upgrade for me. Still can low cost PSU(40-50$) handle and not damage my system for about a year of usage?
Here is some of the psus I've found:
http://www.amazon.com/Diablotek-650-Watt-Power-Supply-P...
+12V1@23A
+12V2@23A
Could find specs for these two, which probably(?) eliminates them:
This one seems to be a bad choice for my case, because of short wires. But the low price keeps me from deleting this link http://www.amazon.com/Blue-Star-4-pin-Supplies-PCI-Expr...
http://www.amazon.com/Hercules-Green-Black-power-supply...

P.S. 600-650W too much? o.O
Links to possible choices and any constructive criticism is welcome.

More about : question psus recommended psu system

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davcon said:
A quality 500W unit would be fine.
I understand you're on a budget but i don't advise skimping on probably the most important component in your rig.
http://www.newegg.com/Product/Productcompare.aspx?Submi...
Absolute cheapest quality unit.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

http://www.newegg.com/Product/Product.aspx?Item=N82E168...


what about this?
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Can get it with a good case for 60$ after all MIR.

davcon said:
Yep! i saw that deal with the M59 not bad for a budget gaming combo!
OZC makes decent psu's i have a 600W ModXtreme.
http://www.hardwaresecrets.com/article/OCZ-StealthXStre...

great!
Yet would you recommend me buy this bundle? To get this cheap deal I need to buy it now. But there is no mobos for new generation i cores. So the case w/ psu will just sit in my closet for a month. And there is no way for me to test if it works fine. Same is with gpu, I found a good one for 185$ and -40$MIR (need to buy soon for MIR). Again I won't be able to test it. On other hand I don't want to miss a good deal and regret later.
At some point I was thinking of maybe buying phenom II core. But from reading forum it just don't stand a chance with any i cores.
Power supply Master

dimamu15 said:
great!
Yet would you recommend me buy this bundle? To get this cheap deal I need to buy it now. But there is no mobos for new generation i cores. So the case w/ psu will just sit in my closet for a month. And there is no way for me to test if it works fine. Same is with gpu, I found a good one for 185$ and -40$MIR (need to buy soon for MIR). Again I won't be able to test it. On other hand I don't want to miss a good deal and regret later.
At some point I was thinking of maybe buying phenom II core. But from reading forum it just don't stand a chance with any i cores.

You could defintely test the psu and case fans.
http://www.youtube.com/watch?v=5FWXgQSokF4
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