Could I Crossfire?

[Bigian88]

Given my current specs, do you think i could crossfire another 5770 without upgrading my PSU again? (current one is less than a week old)

I've looked into it and most websites are saying different power consumption levels so im not sure which to believe.

[El Wayneo]

Yeah you can mate.

HD5770 uses between 90 and 110W at full load.

So 2 of them = 220W, then add 100W on for DVD/HDD/Mobo/RAM/Fans MAX and about 140W MAX for your OC on CPU.

So looking at 460W MAX, more likely 400 - 425W.

Whats the combined 12V Rail output on your PSU? I looked it up its 580W.

Should be fine.

[Nomad2k3]

If I recall I think its only 600w for the 5850's?

So should be goode :D

[Zaim]

If I recall I think its only 600w for the 5850's?

So should be goode :D

+1, 600w psu is enough for two 5770's :thumb:

[Bigian88]

copied some of the power from another thread of mine, lets do the maths:

CPU (Full load) - 159w
2x Hard drives (Full load) - 13.6w (6.8w each)
Memory - 40w (approx 20w each)
Gfx (Full load) - 108W
5x case fans - 18w (approx 4w each)
Fan Controller - 10w
TOTAL - 348.6w

That should give me more than enough room for another 5770 and accomidate my dvd drive & wireless card that i dont know the output of.

[El Wayneo]

If oyu add another 108W on then for the 2nd GPU to your 348W that gives 456W, not a bad guess at 460W.

Although i think your RAM estimate is high, didn't think your CPU would 160W.

[Zaim]

copied some of the power from another thread of mine, lets do the maths:

CPU (Full load) - 159w
2x Hard drives (Full load) - 13.6w (6.8w each)
Memory - 40w (approx 20w each)
Gfx (Full load) - 108W
5x case fans - 18w (approx 4w each)
Fan Controller - 10w
TOTAL - 348.6w

That should give me more than enough room for another 5770 and accomidate my dvd drive & wireless card that i dont know the output of.

Ye, my pc peeks at 325w when running 3dmark vantage, stalker benchmarks etc. so i could add another 4890, so say add 190w to 325= 515w so 600/650w psu would be fine for me and my card uses 80w more than 5770

[Bigian88]

Is it possible to crossfire different brands of the same GPU?

The Gigabyte one I have at the moment is one of the expensive ones on the market and theres other brands that are £20-£30 cheaper - could i still crossfire one of them with my current GPU?

[watercooled]

yes you can

i have a gigabyte and a powercolor

[El Wayneo]

Yeah as long as its the same amount of memory its fine.

[Bigian88]

this will be epic!! :D

[Pullen]

this will be epic!! :D

Slowly coming over to the PC side for gaming are we?

[Bigian88]

hahaha perhaps,

To be honest im one of those people who has to have the best, im very competative - even with myself! Although my budget cant buy my the best PC, I intend to do the best I can that exceeds my needs 'just incase' a rainy day comes along :)

[Bigian88]

feels like this:

http://t2.gstatic.com/images?q=tbn:ANd9GcTRhIYaxa9sMhp97plJW4YkN9P0U2hdy 8TnzqrUir8BHYC5Pfw&t=1&usg=__HH7A8IqMGwvjV_UUBvEcPAB2To8=


To be honest, i use my PC alot and im always sat on my desk chair whilst on my ps3 or watching a film anyway as i can multitask :) (in between games on mw2 or a boring part of a film i can check on here)

[therealmrhead]

Don't forget that mobo will run the second card at 4x though if that has any bearing on your decision.

[Bigian88]

it doesnt mate, there both x16 :)


3 x PCI (32 bit)
2 x PCI-E 2.0 x16
1 x PCI-E x1

[therealmrhead]

yeah that is the size of the slot but not the speed, this is copied from the info from a seller of your mobo (Aria don't seem to have that model)

Expansion Slots 2 x PCIe 2.0 x16 (*blue@ x16 mode, black@ x4 mode)

[Zaim]

yeah that is the size of the slot but not the speed, this is copied from the info from a seller of your mobo (Aria don't seem to have that model)

Expansion Slots 2 x PCIe 2.0 x16 (*blue@ x16 mode, black@ x4 mode)

That's right, only the 880g asrock extreme, 790GX,890GX do both at 8x

[Bigian88]

looks like a new motherboard is on the cards before an investment in another 5770 then :(