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Which PSU i should get ?

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Hi everyone i'm getting a PSU for my new build, But i'm kinda confused about which one i should get, Here is what's available in my country:

SeaSonic S12II 520 Bronze 520W ATX12V V2.3 / EPS 12V V2.91 80 PLUS BRONZE Certified Active PFC Power Supply

SILVERSTONE ST50F-ES 500W ATX12V v2.3 80 PLUS Certified Active PFC Power Supply

XFX Core Edition PRO550W (P1-550S-XXB9) 550W ATX12V 2.2 & ESP12V 2.91 SLI Ready CrossFire Ready 80 PLUS BRONZE Certified Active PFC Power Supply

Thermaltake TR2 500w TR-500P PSU

Thermaltake Litepower 700W PSU

ps: All of'em are in the same price range

My build:
Intel Core i5 2400
GigaByte P61-USB3P
Western Digital Blue WD320 Sata 3GB/s
Kingston 4GB DDR3 1333MHz CL9 1.5v
Gigabyte GeForce GTX 550 Ti 1GB GDDR5 or SAPPHIRE AMD Radeon HD 6790 1GB GDDR5

thx.

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Power supply Master

700w to 750w is far more than needed for that pc

the three you listed will all handle it fine

seasonic--great make

xfx--think thats got seasonic internals in it

silverstone--very good psus and a bit cheaper than other well known makers

all of them are good--depends on prices and how long the warranty is on each which i would choose
Anonymous
Power supply Authority

SeaSonic S12II 520 Bronze 520W
+3.3V@24A, +5V@24A, +12V1@20A, +12V2@20A, -12V@0.8A, +5VSB@2.5A
SILVERSTONE ST50F-ES 500W ATX12V
+3.3V@24A, +5V@20A, +12V@34A, -12V@0.3A, +5VSB@2.5A
XFX Core Edition PRO550W
+3.3V@24A, +5V@24A, +12V@44A, -12V@0.5A, +5VSB@2.5A

i like that juicy 44 amp rail on the XFX! :) 
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Anonymous
Power supply Authority

skarin said:
yes but when he makes a new build the components are gonna need more power which means forking out more money i would rather get a bigger one than i need than have to pay twice for the same thing


first of all a good 550W PSU is better than an "ok" 700 or even 750W PSU.

second the OP stated his system specs and asked a question based on those specs.

third please do some actual research about component power requirements.
with a 44 amp rail the OP can run a 6870 Xfire or single GTX 580 graphics solution.

I would go for the XFX. It's basically a Seasonic unit, look fantastic, and can go with basically any colour scheme (it's neutral).
Components will have lower power consumption as technology advances, not higher. So invest your money in good quality, not high power. A 600W-700W is more than enough, even for 2 graphics cards.

skarin said:
if i was you i would be aiming for a 700w to a 750w psu that way you know you have got enough juice for your components because 550w is abit low


skarin said:
ofc a good 550w psu is gonna be better than a "ok" one because you just contrdicted yourself because good is better than ok


Yes but you have to realize that with a 44 amp rail, it can power far more components and is perfect for hardcore Gamer's as it uses 'True wattage'.
Power supply Expert

XFX Core Edition PRO550W (P1-550S-XXB9) 550W ATX12V 2.2 & ESP12V 2.91 SLI Ready CrossFire Ready 80 PLUS BRONZE Certified Active PFC Power Supply < Is plenty of power to run your setup , and it's made by Seasonic
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