7900GTX SLI

[Coolit]

Hi All,

I've decided to buy a 2nd 7900GTX at the end of the month. Currently I have an XFX card which I bought from OcUK as there OEM version.

What I want to know is if I need to buy a 2nd XFX 7900GTX or any other branded 7900GTX. I ask as if I can buy any manufacturers board I'll just buy another OcUK OEM card and save £55 over the branded XFX version

 

[Jokester]

It'll work with any other card as long as it's the same type, all you need to do is use current drivers.

Jokester

 

[LanceCrossfire]

as long as youve got the latest drivers then you can get a different card manufactuar as long as its got the same gpu(in this case a 7900gtx)

 

[Coolit]

Thanks guys

Will there be any performance hit do you think?

 

[Aidoscuz]

As said you should be fine with two 7900GTXs from any manufacturer. I think the current batch of OcUK cards are XFX so you'll almost definitely get the same card as you already have. There's been loads of problems with recent 7900 cards though, so watch out...

 

[LanceCrossfire]

Thanks guys

Will there be any performance hit do you think?

shouldnt think so as they all originate from the same reference board, just go for a decent brand such as xfx or gainward as they use superior memory etc...

 

[matt100]

Just buy a reference one and oc it.. sli will work at the speed of the slowest card so if you have 1 stock oem and one XXXOMGXXX "I can't overclock myself" edition and sli them you'll wind up with 2 at the slower speed.

Probably best to get a speed match for the one you already have or clock it down then clock them up together if you get a slower one.

 

[MeatLoaf]

Just buy a reference one and oc it.. sli will work at the speed of the slowest card so if you have 1 stock oem and one XXXOMGXXX "I can't overclock myself" edition and sli them you'll wind up with 2 at the slower speed.

Probably best to get a speed match for the one you already have or clock it down then clock them up together if you get a slower one.

Thats partly correct, they will operate at the frequency of the card in the top slot.

When i had 2 7800s the BFG OC card was in the upper slot and the standard ocuk one was in the bottom slot. both operated at the overclocked BFG frequencies meaning the ocuk one was permaenantly clocked.

When i had 2 7900s i had a standard ocuk one in the top slot and a BFG one in the lower slot. Both operated a standard frequencies.