GTA V R9 270 CrossfireX 50% GPU Usage?!?! Help

[Nathan_GamingUK]

i bought a 2nd r9 270 last week online and it turned up today.. i plugged it in and ran a few benchmarks and it was running near to on par with the 290x 8GB edition..

(i have made sure that i have enabled crossfire)

i booted up GTA V while running MSI Afterburner and RivaTuner and seen that i am only running at 50% usage per gpu.. it seems as its split the use between the both and not maxing them both

out??

 

i have been confusing myself about it all day

(i have the latest drivers 15.11 Crimson Edition)

 

My PC Specs:

 

i7 930 @2.8Ghz

r9 270 Crossfire

agility 3 120gb SSD

8Gb kingston Ram

900w PSU

 

Any Information will be Respected Gratefully

[Godlygamer23]

Are you using V-Sync?

[don_svetlio]

does your board have the PCIe lanes to do it? you need PCIe 2.0 16x for each card or PCIe 3.0 8x as minimums

[Suffokation]

Its funny you bring this up as my friend recently dropped his 270's and got a 390 for this very issue. He had an i5 3670 and his second gpu used 50% aswell. As far as i know its because of GTAV and it can't be helped. Other then that you might be just bottlenecked as thats a fair bit of GPU power for a first gen processor to handle.

[Godlygamer23]

does your board have the PCIe lanes to do it? you need PCIe 2.0 16x for each card or PCIe 3.0 8x as minimums

Well no. You can use PCIe 2.0 x8 or PCIe 3.0 x4.

[Nathan_GamingUK]

im not using v-sync and my board is Asus p6x-58d-e and it is in both of the x16 slots

[don_svetlio]

Well no. You can use PCIe 2.0 x8 or PCIe 3.0 x4.

are you sure? A user had such a config and it ended up being the bottleneck after endless troubleshooting when we looked up some numbers

[Godlygamer23]

are you sure? A user had such a config and it ended up being the bottleneck after endless troubleshooting when we looked up some numbers

http://www.tomshardware.com/reviews/graphics-performance-myths-debunked,3739-3.html

[don_svetlio]

http://www.tomshardware.com/reviews/graphics-performance-myths-debunked,3739-3.html

Well, that guy I mentioned DID have 290s so maybe cause of newer cards?

[Godlygamer23]

Well, that guy I mentioned DID have 290s so maybe cause of newer cards?

TomsHardware was using a 290X in that link.

[Nathan_GamingUK]

see i dont get it as this same rig had 3x gtx 480's in SLI and was not bottlenecked at all?? so is it AMD .. i had Crossfire HD 5970 and got rid of them for them same reason !!! makes me so angry..

[don_svetlio]

TomsHardware was using a 290X in that link.

Odd - not idea why that other guy had issues with PCIe 2.0 x8 with 2 290s. Odd stuff