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Upgrading GPU + PSU, need some assistance

Last response: in Systems
February 1, 2014 7:10:00 AM

Hi, i'm looking to upgrade my GPU and i'm fairly confident that my PSU will need bumping up too.
This is primarily for gaming + recording game footage.

with that said here's my current rig:

CPU: AMD Phenom II x6 1100T 3.3ghz
MoBo: GigaByte M68MT-S2P
Memory: 2x 4GB 1333mhz
GPU:Radeon 6770 1GB DDR5
PSU: Corsair 500w
HDD: 2x Seagate 1TB 7200rpm
i don't know if this is useful but there is a small fan on the back and a medium sized fan on the top of the case. Tower casing

there are 2 GPUs i'm looking at in particular,
EVGA GTX780 3GB ACX Cooler
Sapphire R9 290 4GB

i'm open to suggestions as i doubt i would be upgrading this rig anytime soon after this GPU + PSU upgrade. Ideally i'd like them to last me a few years.

when it comes to the PSU i pretty much have no idea what i'm looking for besides a 750watt PSU pretty much. (i have no idea how to work out the Volt+Amp requirements or how it works even)
So any help in the PSU front would be much appreciated also.

That's about it i think, i've heard to 290 runs hot would that be a problem for longevity? would the 780 be a better choice?

and which/what PSU would you recommend?

Resolution: 1920x1080
hopefully play things like BF4 - Ghosts - Dark souls 2 - Skyrim on ultra + ENB that kind of thing
Thanks very much for your help, it's much appreciated.
February 1, 2014 7:27:13 AM

well, with the right cooler, 290 can perform great

see this benchmark
it is comparable to the highest clock GTX 780 from Gigabyte GHZ edition
February 1, 2014 7:27:47 AM

here is a reference page for recommended system PSU wattage based on the type and amount of GPUs installed:

If you are overclocking, I suggest adding 50-100W on to their recommendation. Get a quality PSU from a top tier company such as Seasonic, XFX, Corsair (EXCEPT their CX series) or Antec.

You might want to consider the new Asus GTX 760 x 2 (dual 760's on same card). There is a write-up about it here:,3730....

gives you an idea of how it stacks up against some other GPUs.
Related resources
February 1, 2014 7:32:26 AM

nice thanks for the quick reply, i'll check those links out now.
February 1, 2014 8:00:41 AM

ok i've checked those links they helped quite alot thanks.

it seems i'm looking at a 750watt PSU afterall then, you mentioned the 290 with the right cooler. Would that need to be manual added to the GPU itself or?

ok, so i did some rummaging around the net and came across this:
Sapphire R9 290 Tri X
I assume that is what you mean by an alternate cooler?

On the PSU front, i did find this:
XFX 750W
Am i right in assuming that those 2 would work fine together without exploding in my face? lol


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February 1, 2014 8:06:55 AM

excelent choice,
i was about to suggest that XFX 750W

but let clear this GPU thing first
yes, i meant the alternate cooler from sapphire tri-X is the best. tom's reviewed it recently
February 1, 2014 8:13:52 AM

brilliant :bounce: 
thanks for all the help, time to get my shiny new card and psu.