Crossfire Setup. Confusion for PCI-E 3.0 x16 and 2.0 x 16

[duffy386]

Currently I have the following setup.

R9-270x
http://www.asrock.com/mb/Intel/Fatal1ty%20H87%20Performance/

I am looking for a budget graphics upgrade, and am wondering about a crossfire setup by buying another 270x. will it work? The motherboard has a 2.0 and 3.0 16x PCI-E slots and I am not sure if this will work. If it does, will one or either card be bottlenecked?

 

[Killer MO]

It depends of you're cpu. What cpu do you have?

 

[Killer MO]

The amd crossfire isn't recommended because the power usage doubles and consumes a lot. I recommend you getting instead of that r9 replace you're current one with an r9 380. It had full directx12 compatibility and higher performance. You'll see a massive difference.

 

[madmatt30]

You can run crossfire 270x on that board fine.
Bear in kind crossfire doesn't work properly in ALL titles but in the ones it does its a very powerful setup.

I'd always personally go a hettercsingle GPU but if you Dan grab a 270x relatively cheap then yes - its worth doing as long as your PSU is upto par.

 

[duffy386]

It depends of you're cpu. What cpu do you have?

i5-4440

 

[duffy386]

Yeah I understand why a better single gpu is better, but I'm looking for best value for money. I can pro ably get another 270x cheap. Just want to make sure that it will be a good boost in performance per dollar spent

 

[madmatt30]

Better than 970/390 performance in titles that utilise crossfire properly mate so yes a big big performance boost.

 

[NightAntilli]

The performance boost will be good when it works. That's the thing. It's not guaranteed to work properly with every game. In best case scenarios you get a 95% boost in performance. In the worst case scenario you get the same framerate with increased stuttering.