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Asus GTS 450 and my PSU .. good enuff?

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October 22, 2010 6:27:22 PM

Recently my GF 9600 GT OC died, and I was looking for a replacement and decided on Asus's GTS 450 OC version.

I'll layout what I have on/in my rig currently:
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Asus V2-M3N8200 Barebones (basically a M3N78-VM)
Antec EA-430D Powersupply
AMD Phenom X3 8650 (not OC'd)
Kingston HyperX 4x1GB DDR1066 (1.8v at 800Mhz, not stable at 2.0 & 1066)
Onboard GF8200 IGP
WDC Blue SATA 500GB
Toshiba SATA DVD+-RW
Chaintech AV-710 Soundcard
Segate 250GB via USB to IDE adapter
160GB USB 2.0 Pocket HDD
Logitech MX518 Mouse
Dell Multimedia USB Keyboard
Logitech Webcam Pro 9000
HP LaserJet 1200 USB

The Antec EA-430D has a 12v1 @17a and 12v2 @16a. I am planning on upgrading the PSU later, or sooner if I can help it. Would a singe 12v rail be best, or a multi rail PSU? I was thinking of the CORSAIR CMPSU-550VX.

NOTE: I am also going to install a 2nd SATA HDD in the case, just a FYI.

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a c 165 ) Power supply
October 22, 2010 8:46:59 PM

you will be fine. that's a very good PSU with 32a on the 12v and can peak well above 430w. In fact you can run the GTX 460 off it with no issue.

i would personally keep the PSU and look at a CPU upgrade
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October 22, 2010 8:55:19 PM

Single vs. Multi rail is sort of a matter of personal preference. I like the idea of a single rail. but multi-rail PSUs are usually designed to account for the GPU and CPU usages (i.e., they don't put the GPU and CPU on the same rail in a multi-rail setup, although the GPU is typically bundled with the rest of the system, e.g. motherboard and drives).

For your information, your GPU is spec'ed to consume at most 100W and Nvidia recommends a 400W PSU. Your current PSU is more than adequate.
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a c 165 ) Power supply
October 22, 2010 10:14:52 PM

hellwig said:
Single vs. Multi rail is sort of a matter of personal preference. I like the idea of a single rail. but multi-rail PSUs are usually designed to account for the GPU and CPU usages (i.e., they don't put the GPU and CPU on the same rail in a multi-rail setup, although the GPU is typically bundled with the rest of the system, e.g. motherboard and drives).

For your information, your GPU is spec'ed to consume at most 100W and Nvidia recommends a 400W PSU. Your current PSU is more than adequate.


that 430w has only one 12v rail, its just been split...just about every PSU under 1000w is a single rail PSU
http://www.jonnyguru.com/forums/showthread.php?t=3990
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October 22, 2010 10:15:22 PM

hellwig said:
Single vs. Multi rail is sort of a matter of personal preference. I like the idea of a single rail. but multi-rail PSUs are usually designed to account for the GPU and CPU usages (i.e., they don't put the GPU and CPU on the same rail in a multi-rail setup, although the GPU is typically bundled with the rest of the system, e.g. motherboard and drives).

For your information, your GPU is spec'ed to consume at most 100W and Nvidia recommends a 400W PSU. Your current PSU is more than adequate.

The one I am getting (GTS 450), according to THG tests under load uses 226w .. while my old 9600 GT OC used 190~200 I am guessing (from various 9600 GT OC reviews/tests on THG).

But I've also read in a Newegg review that it can run on a micro ATX 380w PSU .. but I don't think he tested it in gaming..will have to check that review again.
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October 22, 2010 10:25:04 PM

ct1615 said:
you will be fine. that's a very good PSU with 32a on the 12v and can peak well above 430w. In fact you can run the GTX 460 off it with no issue.

i would personally keep the PSU and look at a CPU upgrade

I would like to get a bit of a CPU upgrade, but there aren't many AM2+ CPUs about really worth getting. Sure there's the Phenom II X4 920/940 .. but I doubt I'll really see that much of a difference from my X3 8650.
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October 22, 2010 10:34:50 PM

ct1615 said:
that 430w has only one 12v rail, its just been split...just about every PSU under 1000w is a single rail PSU
http://www.jonnyguru.com/forums/showthread.php?t=3990

Interesting, but still, doesn't change the fact that each "rail" is limited in its output current. If you have 300W split equally among two "rails", each rail is still limited to 150W, even if it really comes from the same source. Where as a single-rail could supply the total 300W to a single wire if need be (not that that's ever the case). I like the idea of single-rail just because it simplifies things. If your single-rail PSU has the power rating and the plugs, you don't have to think about whats drawing off which rail.
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October 22, 2010 10:38:52 PM

Joshatdot said:
The one I am getting (GTS 450), according to THG tests under load uses 226w .. while my old 9600 GT OC used 190~200 I am guessing (from various 9600 GT OC reviews/tests on THG).

But I've also read in a Newegg review that it can run on a micro ATX 380w PSU .. but I don't think he tested it in gaming..will have to check that review again.


Overclocking can add some extra power draw, but I was quoting the Nvidia product page (http://www.nvidia.com/object/product-geforce-gts-450-us...) for the GTS 450 that listed a maximum power draw of 106W. 226W could be because of overclocking, beefed-up cooling system, and the fact that they might have measured at the wall (thus the efficiency of the PSU comes into play). Still, plug it in with your current PSU. If you have problems, you can upgrade to that 550 anyway (which was your plan, right)? I'm just saying, according to Nvidia, you should be ok with your 430.
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a c 165 ) Power supply
October 22, 2010 10:49:20 PM

Joshatdot said:
I would like to get a bit of a CPU upgrade, but there aren't many AM2+ CPUs about really worth getting. Sure there's the Phenom II X4 920/940 .. but I doubt I'll really see that much of a difference from my X3 8650.


you would get a nice jump in gaming
http://www.anandtech.com/bench/Product/81?vs=25

plus a lot of AM2+ mobo can run AM3 CPUs with a simple BIOS upgrade. check the asus web site for a cpu compatibility list
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October 23, 2010 12:29:29 AM

ct1615 said:
you would get a nice jump in gaming
http://www.anandtech.com/bench/Product/81?vs=25

plus a lot of AM2+ mobo can run AM3 CPUs with a simple BIOS upgrade. check the asus web site for a cpu compatibility list

Thanks for that sweet CPU bench page, and I'll have to check if my V2-M3N8200 (M3N78-VM) has a BIOS upgrade for AM3s :) 

edit: hmm .. over all the X4 II 920 is about 50% faster .. and the X4 II 940 is teeny bit faster over all then the 920
edit2: Kool beans the BIOS I have will accept AM3 CPUs!
edit3: even the AM3 X4 II 810 is also about 50% better then my X3 8650
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October 29, 2010 8:16:20 AM

It's been afew days, and so far the GTS 450 OC is working great with my EA-430D .. but I am planning on a Corsair 550w when I upgrade the CPU to a AM3 X4 something
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November 7, 2010 11:30:01 PM

Best answer selected by Joshatdot.
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a b ) Power supply
a b Ĉ ASUS
November 8, 2010 8:18:07 AM

This topic has been closed by Mousemonkey
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