Crossfire my 4850 with what?

[Ricickle]

I have a Gigabyte Hd4850 I bought at release which once the parts arrive will be under water.

I'm looking to spend around £350 on a card and i was thinking either a 4850x2 or 4870x2

Would I gain any performance by adding my 4850 to either of these set-ups?

 

[Mojo]

Is it a 512mb vcersion? If it is and you cf it with either a 4850x2 or 4870x2 (which are both 1gb per core) they will only run using 512mb of their memory. I would suggest the 4850x2 otherwise, as the comparatively slow gddr3 mem of the 4850 will slow down the 4870's gddr5

 

[tmaxxthomson]

yeah, i would defo go with the 4850x2. would be a better choice. the 4850 would just hold back the 4870x2 i would imagine and cost you more!

 

[Ricickle]

Cool i just thought for the extra £30 the 4870x2 would be better.

 

[tmaxxthomson]

go for the 4870x2 then if u would rather spend the extra money, i suppost for an extra £30 u cant go wrong! i would imagine it will perform better than just adding a 4850x2 =]

 

[rikesh]

can you crossfire two different cards i.e a 4850 and a 3870xt?

 

[Ricickle]

Don't think so.
I'm sure its just all 48xx series are compatible with each other and all 38xx series are the same.

 

[LoadsaMoney]

Would get a nice boost, but you would still only have 512mb, as you lose 1x cards memory, and you also lose the memory on the card thats got the most.

can you crossfire two different cards i.e a 4850 and a 3870xt?

No only same series.

 

[PwnDirect]

sell the 4850 & waterblock

get a 4870x2 & waterblock

 

[ins0mn1ac]

sell the 4850 & waterblock

get a 4870x2 & waterblock

What this guy said.

 

[Mojo]

If a 4870x2 is only 30 quid more than a 4850x2, then yeah go for the 4870x2. Why is the price difference so small? the single cards themselves are 30-40 quid difference in price as it stands