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Graphics Card for a Corsair CX430W V2 PSU

Last response: in Graphics & Displays
November 2, 2011 3:54:44 AM

Hello everyone,

I am looking to upgrade my graphics performance in this build. Only planning to upgrade the graphics and no other components as I want to keep this build under a certain budget. The only concern I have is with with the power requirements that most high end GPUs require.

To lower power consumption, (Thought I'm not sure if that makes any difference at all) I'm using:
- AMD CPU with a max TDP of 95W,
- Low power GREEN SATA HDD.
- Only one 120mm regular case exhaust fan

If I'm not mistaken, my power supply is of decent quality and is quite reliable. It's rated @ 430W with 28A (336W) on the 12V rail, and has only one 6+2 pin PCI-E power connector.

So far, I'm really leaning towards an XFX AMD RADEON 6850. I read about many people running these on Antec EarthWatts 380W/450W PSUs so I'm wondering if I would be okay with a Corsair 430W? I read that these only require 25A on the 12V rail and a single PCI-E connector.

Thanks for the input,


ASUS M4A78LT-M LE MOTHERBOARD - $55 (after $10 rebate)

AMD PHENOM II X4 840 @ 3.2GHz QUAD-CORE CPU - $100

XFX 9600 GSO 512MB DDR3 GPU - $15 (after $30 rebate)

CORSAIR XMS3 1600MHz DDR3 8GB RAM- $40 (after $40 rebate)


NZXT CLASSIC GAMMA CASE - $25 (after $10 rebate)


SAMSUNG 22x ODD - $20

* Total cost before taxes/shipping = $340.
November 2, 2011 3:56:26 AM

Would there be a better graphics card which has better bang for buck (ie. value) ?
a b U Graphics card
November 2, 2011 9:47:21 AM

choose hd 6850 this will improve your system more than 9600gso otherwise according to your budget build is nice!
Related resources

Best solution

November 2, 2011 8:13:47 PM

This is a very helpful post for future reference.

November 3, 2011 2:41:30 PM

Thanks for the replies

That is a very helpful resource and I will keep note of that for future reference.

The most powerful GPUs which I think could be supported by my PSU, anything more powerful would put alot of strain on my PSU, I think.

AMD RADEON HD 6850 (127 TDP) --> $130
AMD RADEON HD 6770 (108 TDP) --> $100
NVIDIA GEFORCE GTX 550 Ti (116 TDP) --> $100

I guess my question is, which one of these would you consider to be the best bang for buck? Or is there a better card out there...
a b U Graphics card
November 3, 2011 3:01:32 PM

hd 6850 is best option.
a b U Graphics card
November 3, 2011 3:03:44 PM

The HD 6850 out of the ones you've listed, provides the best performance.
November 3, 2011 3:35:37 PM

Yep, but is it worth the extra $30 on your opinion? over the 6770.
a b U Graphics card
November 3, 2011 3:37:43 PM

Yes, the $30 is well worth spent. :) 
December 2, 2011 9:22:32 PM

Sorry to dig up an old thread, but I'm seriously looking to make a purchase in the near future so I'd like to hear some more comments before I do.

I'm looking at an XFX RADEON HD 6850 (HD685XZCFC) for $150 (+ extra $30MIR).

This graphics card seems to be the best bang for buck, as well as the limit (TDP of 127W) for the CX430V2 PSU that I currently have.
Note: I do not plan to buy a new PSU for this rig... because I just bought it over the summer... and that would really be a waste of money T~T

My concern with this card is that it requires TWO (2) PCI-E power connectors, when my PSU has only one. I have plenty of the molex-to-PCI-E adapters which I could use; and I have PLENTY of free molex headers....

Does anyone think that this is a viable solution? Will this work in the long run?
I've read a lot about the 6850s requiring only 1 PCI-E power connector to begin with, but I can't seem to find any of those models at a decent price...

Thanks for your time,
March 16, 2012 4:39:04 AM

Best answer selected by rex000.