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Can my PSU handle 2 x 5770?

mambo1888

Prominent Member
Hi folks, just wondering if someone could tell me if my current PSU (OCZ modxstream pro 600w) would be able to power 2 5770's in crossfire?

On the box it has Sli compatible but there isno mention of Xfire.

Thanks:smashin:
 
Hi folks, just wondering if someone could tell me if my current PSU (OCZ modxstream pro 600w) would be able to power 2 5770's in crossfire?

On the box it has Sli compatible but there isno mention of Xfire.

Thanks:smashin:

IIRC...

Running 2no 5770's consumes:

109w idle
324w load

So to answer your question.. In theory your power supply should be sufficient, it all depends what other components/peripherals you have too.:thumbsup:
 

mambo1888

Prominent Member
IIRC...

Running 2no 5770's consumes:

109w idle
324w load

So to answer your question.. In theory your power supply should be sufficient, it all depends what other components/peripherals you have too.:thumbsup:


Thanks for the speedy response,

In my system I have
i5 quad cpu - stock cooler
4gb ddr3 corsair dominator
4 case fans
dvd rw
1tb hdd
wireless keyboard/mouse
external 1tb hdd
wireless 360 receiver
at the moment 1 xfx 5770

I think thats it, do you think I would be better upgrading the PSU?

Also, does the fact there is only mention of sli and not crossfire not mean anything?

Cheers, Mambo:thumbsup:
 
Thanks for the speedy response,

In my system I have
i5 quad cpu - stock cooler
4gb ddr3 corsair dominator
4 case fans
dvd rw
1tb hdd
wireless keyboard/mouse
external 1tb hdd
wireless 360 receiver
at the moment 1 xfx 5770

I think thats it, do you think I would be better upgrading the PSU?

Also, does the fact there is only mention of sli and not crossfire not mean anything?

Cheers, Mambo:thumbsup:

No problem my friend.

I'd imagine you would be fine with that PSU for now tbh.

SLI is the term Nvidia use & Xfire is the term AMD use, same thing really.

If you want to check how much power your system is likely to use then I highly recommend:

Enermax Power Supply Calculator

Should give you an idea of exactly how much power you're going to be using.:thumbsup:
 

mambo1888

Prominent Member
Cool, cheers buddy, I will try the calculator thing the now better safe than sorry:)

Thanks again:smashin:
 

mambo1888

Prominent Member
Ran the calculator and it came back with 620w.....

Nothings ever easy:mad:
 
Ran the calculator and it came back with 620w.....

Nothings ever easy:mad:

The calculator will always state the recommended power allowance.

My best advise is to try the Xfire and see how the system runs as you would normally use it.

If you witness system instability then you know that the power supply needs upgrading.:smashin:

Edit: I ran the calculator myself for my system and it said I needed 920WATTS - I'm running a Corsair HX850 with no problems.
 
Last edited:

mambo1888

Prominent Member
I have heard that they over compensate to be on the safe side, but i would rather not be running at its max aswell.

I suppose if i do end up getting a second card i can try it like you say to see what stability is like, and if i need to upgrade i can always use this psu for a new next project, (the wife starts to weep) lol
 
I suppose if i do end up getting a second card i can try it like you say to see what stability is like, and if i need to upgrade i can always use this psu for a new next project, (the wife starts to weep) lol

That's what I would do, I have no plans on upgrading my PSU until I upgrade my i7 rig when the next worthwhile incentive comes along.

If I keep upgrading i'll be able to supply a medium sized company with computers for their office:suicide:
 

mambo1888

Prominent Member
Although th 5870 is on the today only for £220 minus £70-80 for my 5770 and the £70-80 for a new 5770 means £70 for a brand spanking 5870 in my insane logic:clap:
 
Although th 5870 is on the today only for £220 minus £70-80 for my 5770 and the £70-80 for a new 5770 means £70 for a brand spanking 5870 in my insane logic:clap:

It makes perfect sense to me:thumbsup:

I only wish the 6990 had come out when it was supposed to, ended up putting the GTX580 on my Christmas list instead:(
 

mambo1888

Prominent Member
Job done, 5870 ordered 5770 going to new home lol

Cheers for pushing me over the edge there :smashin:
 

mambo1888

Prominent Member
yeah got to say, untill a few months ago pc gaming meant nothing more than football manager to me, lol.

was very impressed with my 5770 so im sure i will love this one even more:D

Thanks again for all your advice mate:thumbsup:
 
yeah got to say, untill a few months ago pc gaming meant nothing more than football manager to me, lol.

was very impressed with my 5770 so im sure i will love this one even more:D

Thanks again for all your advice mate:thumbsup:

No problem buddy.

Let me know if you come accross any decent games when you fire up your new card:smashin:
 

mambo1888

Prominent Member
will do:smashin:
 

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