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Psu question

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Last response: in Systems
April 14, 2010 9:16:24 PM

Im building this system and have basically no idea if ill have enough psu

in the past i always just bought a cheap way extra watts psu but want a quality psu after i fried my last tower.

in a nut shell is this 450w psu enough for what i have here?

and ill be using my old 9600gt for the time being with the intention of upgrading sooner rather than later

More about : psu question

April 14, 2010 10:46:08 PM

Well i would base the PSU on what GPU you will buy sooner rather then latter.

If you go with a single HD 5770 HD 5850 HD 5870 a good 550W PSU would be fine

If you go xfire ATIs i would go with a good 750W

If you plan on a signal GTX 470 or GTX 480 I would go 650W

If you plan to SLI a GTX 470 or GTX 480 850W

This PSU would run a GTX 470 or 480 and even 2 HD 5770s in xfire
April 14, 2010 10:48:17 PM

thank you!

is it generally held true that corsair is the best?
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April 14, 2010 11:17:41 PM

gobblock said:
Im building this system and have basically no idea if ill have enough psu

With today's cards, the sweet spot, with some serious overclocking assumed, is 650 for one GFX card and 850 for Xfire / SLI

For comparison purposes , the list below contains performance ratings (10 scale) at / prices as per newegg on 02/26/2010 and ones w/ double asterisk (**) made it onto's Editor's Choice List:

Note: Just because you see a brand name on this list, never make the assumption that their other lines are of matching quality. Silverstone for example has other models w/ 6.0 and 7.0 ratings.

650 watters

Antec Signature 650W (10.0) OOS **
Seasonic X-650 650W (10.0) $160 **
Silverstone Olympia OP650 (10.0) NFS

Thermaltake Toughpower QFan 650W (9.5) NLA

Antec Earthwatts EA650 650W (9.0) $75

Antec True Power Trio 650W (7.5) NLA

XFX XPS 650W XXX Edition Power Supply (7.0) NFS

Antec NeoPower Blue 650W (6.5) NLA

BFG BFGR650PSU 650W (6.0) NLA

NorthQ Black Magic Flex 650W PSU (5.0) NFS

NFS - Not For Sale / NLA = No Longer Available / OOS - Out of Stock

850 watters

Antec SG-850 - 10.0 ($220) **
Antec CP-850 - 10.0 ($110) **
XFX 850W Black Edition 10.0 ($185)
Corsair HX850 850W - 10.0 ($180)

Antec TruePower Quattro (TPQ-850) - 9.5 ($150)
Corsair TX850 - 9.5 ($140)
Seasonic M12D 850W - 9.5 (NLA) **
NorthQ Giant Connector 850W - 9.5 (NFS)
Etasis ET850 - 9.5 (NLA)
Silverstone Zeus ST85ZF - 9.5 (NLA)

Enermax Revolution 85+ 850W - 9.0 ($250)

Thrmaltake Toughpower XT 850W - 8.5 ($216)
OCZ Z Series 850W - 8.5 ($200)

NorthQ Black Magic Flex 850W - 8.0 (NFS)
Coolmax CTG-850 - 8.0 (NFS)

SilverStone Decathlon DA850 - 7.5 ($230)
Enermax Galaxy DXX 850W EGX850EWL - 7.5 (NFS)

SilverStone Strider ST85F - 7.0

Silverstone Element ST85EF 850W - 6.0
April 14, 2010 11:18:05 PM

thanks guys!

is there any downside to going too big by 100 w or so, i mean obviously cost, but will a 400w system make any more or less heat using a 450w psu vs a 750w?

will efficiency be affected?
April 15, 2010 1:08:59 AM

Price, and it might add a little more heat to the case. The PSU will only put out the amount of power that is needed for your parts that's connected to the PSU
April 15, 2010 1:16:03 AM

hunter315 said:

This seasonic had a great review over at jonnyguru recently, 9.7 overall is the best i have seen anything get, its cheaper than the corsair 550VX and just as powerful and high quality.

That is a grate PSU also, it gets 10s for Value and Aesthetics 9.5 for Performance and Functionality

As the SeaSonic X650 Gold 650W Gets 10s for Performance and Functionality and 8 for Value and 9.5 for Aesthetics

But man what a price tag