Sapphire Tri-X R9 290, post/bios issues in PCI-E 3, forced board to PCI-E 2

[Admetos]

As above. I have a Sapphire R9 290 that was giving strange boot/post cycling. I had to force my motherboard into PCI-E 2.0.

Everything is working fine, and I can't even see a drop off in performance running PCI-E 2.0 (over 3.0), however curious as to why this happened.

My mother board is an Gigabyte Z87X-UD3H Intel Z87.

Again not an issue, just curious as to why I have to force the card into PCI-E 2.0

Cheers
Jason

 

[GoogalyMoogaly]

Are you using the latest motherboard BIOS?

 

[Admetos]

No i'm using F4.

I was reluctant to change BIOS as the computer has been solid for over a year, and did not want to disturb anything.

 

[wazza300]

save your bios settings

usb stick and f12 key to screenshot each bios page,if latest bios don't cure it you can always flash back to f4

but its best to be on latest final or beta bios as it will cure most bugs

to update it just download/extract the bios to usb stick reboot into bios and flash through qflash (point it to bios on the memory stick)

 

[Admetos]

Wazza, cheers as always for help. Will take screen shots of BIOS and backup, then flash to latest final.

 

[wazza300]

theres also a dual bios switch on the sapphire 290,you might need to switch it to the other position for it to run properly,idk but id try mb bios first

 

[GoogalyMoogaly]

On my Gigabyte Z87X-OC I had to update to a newer BIOS as the older BIOS (F4 I think, coincidentally) didn't work right in PCI-e 3. My scores were like 1/3 or 1/2 of what they should be. New BIOS fixed it.

 

[Admetos]

I read a review, where it said PCI-e 3 was only worth 1-2 frames a second over PCI-e 2. I'm finding this card really fast, so if there's another 1/3 extra performance i'm missing that's incredible.

 

[GoogalyMoogaly]

I read a review, where it said PCI-e 3 was only worth 1-2 frames a second over PCI-e 2. I'm finding this card really fast, so if there's another 1/3 extra performance i'm missing that's incredible.

I mean't my PCI-e 3 performance was only 1/3rd or 1/2 of what it should be.
I don't think there is a massive difference between PCI-e 3 and PCI-e 2, at least at 1080p. For me it was just annoying me that I couldn't run PCI-e 3 when I should be able to.

 

[Admetos]

I mean't my PCI-e 3 performance was only 1/3rd or 1/2 of what it should be.
I don't think there is a massive difference between PCI-e 3 and PCI-e 2, at least at 1080p. For me it was just annoying me that I couldn't run PCI-e 3 when I should be able to.

Yes I see what your saying now, this card is running so fast already can't imagine any quicker (i'm use to slow DDR3 Quadro cards!).

Will get the BIOS upgraded at weekend.