Crossfire has no FPS increase.

[harrybridgen]

I just installed a second R9 290 into my system, but there is no fps increase, and maybe even a decrease.

On MSI, the GPU usages aren't maxing at 100%, they are going up and down randomly. Almost like they are taking turns to display the image, but not working togeather to increase FPS.
http://i.imgur.com/yseDa3A.png

Build: http://uk.pcpartpicker.com/p/cQzfFT

[AlwaysFSX]

What's your cpu usage. Also that is how crossfire works.

[zappian]

Some games don't support crossifre.

Keeps that in mind , a recent one is evil within.

[Briggsy]

In the catalyst control center you need to add a profile for a game and use a predefined amd crossfire profile

[Aniallation]

I just installed a second R9 290 into my system, but there is no fps increase, and maybe even a decrease.

On MSI, the GPU usages aren't maxing at 100%, they are going up and down randomly. Almost like they are taking turns to display the image, but not working togeather to increase FPS.

You need to be playing a game that supports crossfire to get a performance increase with two cards.

[C1intFunWood]

Pretty sure it supports it if both GPUS are under stress

[Guest]

I just installed a second R9 290 into my system, but there is no fps increase, and maybe even a decrease.

On MSI, the GPU usages aren't maxing at 100%, they are going up and down randomly. Almost like they are taking turns to display the image, but not working togeather to increase FPS.

http://i.imgur.com/yseDa3A.png

Build: http://uk.pcpartpicker.com/p/cQzfFT

 

Try Valley (a benchmark) and see how it works. It has fairly good CF support. If that doesn't work either wipe the drivers (with DDU) and install them again.

[harrybridgen]

You need to be playing a game that supports crossfire to get a performance increase with two cards.

Like what?

[Aniallation]

Like what?

I think the best Crossfire-scaling game out there is DIRT 3. There are plenty of games that support Crossfire, as in you'll get some sort of improvement, but it won't be perfect and the improvement depends on the game. 

[zappian]

Like what?

 

Tomb Raider.

Near perfect Scaling.

[Guest]

Like what?

 

Unigine Valley, a free benchmark that you can download in a matter of minutes. It should work with crossfire, if it doesn't then try what I posted earlier.

[harrybridgen]

What a waste of fucking money

[harrybridgen]

In the catalyst control center you need to add a profile for a game and use a predefined amd crossfire profile

How?

[dragoon20005]

I think i spotted your problem already

 

you are running a H87 board

 

which means you have a PCI-E 3.0 x16 slot and the other slot is PCI-E 2.0 x4

 

the second GPU is getting choked by the low bandwidth

 

290 do not use the CrossFire fingers and depend on the lanes to communicate with the GPUs and CPU

 

if that is slow then your fps will not increase

 

suggest either stick to one gpu or getting a Z97 board with SLi support