New Power Supply for Crossfire 5850's

Hey,

Recently i picked up a bargain at the local computer parts store. It was two HIS radeon HD 5850's and xfire bridge for $100! A nice upgrade from my second hand GTX 550 Ti. They said they were clearing out old stock, it was the last thing left and my motherboard supports it. Anyway, I couldn't resist and i brought them home and realised i still had my thermaltake 500w PSU... so instead of being naive and chancing blowing up $1000 and burning my parents house down (I'm 15 BTW, in not one of those guys that are 42 and live in their mothers garage condemned to forever game and never see the light of day).

I went back to look at the store and found this on special for $79 (I'm on a tight budget, McDonald's isn't known for their high pay rates.)

Corsair GS High Current 600W PSU v2

It has a single 12v rail capable of providing 49 amps (588 Watts). Since one 5850 only uses 160W (peak), two would leave 260 W for my CPU. I will not be overclocking the cards (the voltage regulator doesn't allow software voltage control anyway), however my FX 4170 IS overclocked @ 5 Ghz (water cooled, don't worry and its 24/7 stable at 1.5V) I am willing to return to stock if its required.

Will this power my Crossfire system? If you need any other info just ask.

Cheers, Daniel.

PS. If this is in the wrong section, I'm sorry, my PC is in pieces and my old trusty Nokia will only show the first three sections XD

It will, but I would go to 750 or 800

http://www.newegg.com/Product/Produc...82E16817139023

OK. The guys weren't very helpful at the shops. I won't be benchmarking or stress testing so I shouldn't hit the peak usage. I'll wait and see if I can get the 700 or 800 watt version for $129 or $149 :/. I'm in Australia, so newegg prices and suggestions don't apply here ;/.

It was just a shot of the one you were going to get. Why, can`t you buy from Newegg ?

I`ve always used Tigerdirect, they have links for other countries.

DestroyRX said:

Hey,

Recently i picked up a bargain at the local computer parts store. It was two HIS radeon HD 5850's and xfire bridge for $100! A nice upgrade from my second hand GTX 550 Ti. They said they were clearing out old stock, it was the last thing left and my motherboard supports it. Anyway, I couldn't resist and i brought them home and realised i still had my thermaltake 500w PSU... so instead of being naive and chancing blowing up $1000 and burning my parents house down (I'm 15 BTW, in not one of those guys that are 42 and live in their mothers garage condemned to forever game and never see the light of day).

I went back to look at the store and found this on special for $79 (I'm on a tight budget, McDonald's isn't known for their high pay rates.)

Corsair GS High Current 600W PSU v2

It has a single 12v rail capable of providing 49 amps (588 Watts). Since one 5850 only uses 160W (peak), two would leave 260 W for my CPU. I will not be overclocking the cards (the voltage regulator doesn't allow software voltage control anyway), however my FX 4170 IS overclocked @ 5 Ghz (water cooled, don't worry and its 24/7 stable at 1.5V) I am willing to return to stock if its required.

Will this power my Crossfire system? If you need any other info just ask.

Cheers, Daniel.

PS. If this is in the wrong section, I'm sorry, my PC is in pieces and my old trusty Nokia will only show the first three sections XD

Sapphire recommends at least a 600W PSU for two 5850s in Crossfire:

SAPPHIRE HD 5850 1GB GDDR5#

As you have a relatively high-end 600W Corsair unit, it's probably adequate, even though you're overclocking the hell out of the FX-4170.

Many of the people who post here like a lot more margin in their PSUs, though. (It's only money.)

AddRAM said:

I`ve always used Tigerdirect, they have links for other countries.

My local computer store seemed to be cheaper than most online stores and I can just walk there, but thanks for the suggestion and I'll have a look at it :)

AddRAM said:

I`ve always used Tigerdirect, they have links for other countries.

My local computer store seemed to be cheaper than most online stores and I can just walk there, but thanks for the suggestion and I'll have a look at it :)

bobkn said:

Sapphire recommends at least a 600W PSU for two 5850s in Crossfire:

SAPPHIRE HD 5850 1GB GDDR5#

As you have a relatively high-end 600W Corsair unit, it's probably adequate, even though you're overclocking the hell out of the FX-4170.

Many of the people who post here like a lot more margin in their PSUs, though. (It's only money.)

If that's the case I may just get the 700W version, its only $50 extra, and since I saved a lot more than that on those cards, I think I'll just make sure they have enough power.

Thanks guys, this is my first "real" build. And the thing that destroyed my last one was a shoddy power supply (just bought parts off of eBay).