Is it possible to crossfire these cards?

[Horizonz5]

have a XFX HD4650 and another card Vision Tek HD4770 shipped to mfg. for warranty service.

I'm wondering if it is possible to crossfire these cards? And to how do I crossfire? I've heard a cable is neccessary.

My mobo: M478-E has hybrid crossfireX that crossfires the internal graphics with a capable video card (my HD 4770 was capable)

Lastly, my PSU is a Ultra 650w. I know I have the power for these cards but just fyi. Thanks for the help and support.

 

[jsh1284]

No, I am almost 100 percent sure it has to be the same card. Does not have to exactly the same in layout and such but it would need to be another 4650 or another 4770 in order to crossfire.

 

[obsidian86]

you need 2 similar cards to cross fire exact match is only with sli .those cards differ too much

 

[Horizonz5]

Wow okay so if I crossfire with twin HD 4770 the reviews in tom's hardware says it rivals performance of cards costing much more.

now what will I need to crossfire with my M4A78-E mobo?

 

[obsidian86]

you can crossfire a 4770 with a 4750/4770/4830/4850

 

[obsidian86]

be sure you have a good power supply for cossfire

 

[Horizonz5]

be sure you have a good power supply for cossfire

I have an ultra 650w PSU. Good enough?

 

[obsidian86]

yeah should be ok for 4850 crossfire and lower

 

[Horizonz5]

Would you be concerned if the twin HD4770's were different brand names? I don't know I feel as if pairing means same brands too.........

 

[obsidian86]

crossfire aint touchy when it comes to mixing vendors,should be fine

 

[Horizonz5]

crossfire aint touchy when it comes to mixing vendors,should be fine

ty

 

[kenmaglio]

Since this is a current post...

I have the following card

http://www.amazon.com/MSI-R4850-2D512-OC-256-bit-CrossFire-Supported/dp/B001SIG5UM

However I'm looking at getting..

http://www.newegg.com/Product/Product.aspx?Item=N82E16814127435&Tpk=msi%20HD%204850


So I know I should be fine Cross-Firing these... however... from what I know about Cross-Fire..
"You don't need to buy a pair of identical cards for CrossFire motherboards.... However, if the boards aren't identical in performance, the faster board will be throttled back dynamically in order to maintain synchronization."

So will that second card not really even utilize the 1GB ram?

Would I be better off just purchasing the identical card from Amazon?

 

[obsidian86]

actually crossfire scales the 2 cards to a point but core speed is more important then memory capacity/speed