Crossfire with 16x and 4x

Darren

Darren

Moderator
Staff member
I haven't actually ordered my motherboard yet but I was just wondering if it's even possible to Crossfire with it. I'm not really planning on it but am wondering if the option is even available in the future if I decide I want too.

Ok so the mobo in question is an Asus M5A97.

http://www.newegg.com/Product/Product.aspx?Item=N82E16813131767

It has a PCI-e 16x and a PCI-e 4x

Would crossfire work with this setup? Or does the 4x suffer enough of a performance hit that it's not worth it?

I've read in a few places that it is 95% effective as a 16x.

Again I'm probably not going to even do this but am just curious if it's even possible.

Thanks!
 
Its worse performance on a AMD board. Because the X4 slot is run off the southbridge, not the northbridge. If you want to run C/F I would get atleast a 990X board. It will do X8/X8 in C/F and both are off the northbridge.
 
Ok. I'll probably still get this motherboard and not do Crossfire. Just stick to one good video card.
 
There's little performance decrease between x16 and x8, but dropping to x4 is a major hit that would make a CFX or SLI setup somewhat useless. I know this has already been resolved, but that seems to sum it up.
 
Yeah. Thanks for the input. This was more out of curiosity then anything. If I could crossfire it would of been good to know but if not then that's fine too.
 
StrangleHold said:
Thats a Intel where the lanes are coming off the Northbridge. On the AMD the X4 slot gets its lanes from the southbridge. The lanes were really meant for the PCIe X1 slots. If you use the X4 slot, it disables the X1 slots.
Click to expand...

Yeah didnt read the whole thread properly, you did mention that.
Makes it a bit obvious that the link doesn't really apply.
 
You must log in or register to reply here.
Back
Top