Crossfire broke everything :/

[EricPont]

Its the power supply you want atleast 850w for and load it will use 756w

[ElliotGS]

Its the power supply you want atleast 850w for and load it will use 756w

IT IS NOT THE POWER SUPPLY, it only draws around 650w from the wall under gaming load and under synthetic load it draws about 800w from the wall without crashing (this reading was taken from where the monitor and sound sytem is powered from too). People with the AX1200i get this problem so im 99% sure its not my power supply. I get the red screens with only one card in there anyway (in the second PCIE lane down with the top 16x lane empty).

 

At the minute im hoping reinstalling windows will fix this, if not i may have to RMA the motherboard as i think it may be a problem with the x8 PCIE lane.

[ElliotGS]

Ok, asked bc I own a R7 250 an sometimes when it starts windows it shows that red and only happened with 14.4

http://support.amd.com/en-us/download/desktop/previous/detail?os=Windows%207%20-%2064&rev=13.12#amd-catalyst-packages

 

TYVM i will install those and let you know how it goes.

[madcratebuilder]

I have crossfired asus 280X's and I pull 740 watts from the kill-a watt meter.  The 290X's use more power than the 280X's, get a larger PSU.

[Socratic]

Your PSU can draw 750w on the 12v rail, it has 62.5 amps, but it won't draw 750w if other rails are taking power at the same time, and then you add in the diminishing returns. Even if your RSOD is caused by driver issues, or something else and not power consumption, you are severely starving your cards of juice in crossfire.

 

[Tam3n]

I logged 740 W in 700 W out with my 860i running Valley @1440p.

 

R9 290s @factory 1040/1250.

[ElliotGS]

Ok so far the redscreen seems to be happening whenever there is a card occupying the second PCIE lane. I have powered the second card off of a corsair CX600 and the rest of the system off my main RM750. The red screen still happened. I tried backtracking to 13.12, still getting redscreens. Im going to try a windows reinstall now and if that doesnt help I will get the motherboard RMA'd. At the minute it doesnt seem to be the power supply as it is still not getting near 700w from the wall, i think it is a fault with this PCIE lane. Il talk to MSI and see what they think.

[Sonefiler]

Ok so far the redscreen seems to be happening whenever there is a card occupying the second PCIE lane. I have powered the second card off of a corsair CX600 and the rest of the system off my main RM750. The red screen still happened. I tried backtracking to 13.12, still getting redscreens. Im going to try a windows reinstall now and if that doesnt help I will get the motherboard RMA'd. At the minute it doesnt seem to be the power supply as it is still not getting near 700w from the wall, i think it is a fault with this PCIE lane. Il talk to MSI and see what they think.

It's a faulty PCIE lane for sure. RMA the motherboard.

[ElliotGS]

It's a faulty PCIE lane for sure. RMA the motherboard.

Will do. I've dropped MSI an email, do you reckon a windows reinstall would help or should i just not bother and just RMA the board straight away?

[Sonefiler]

Will do. I've dropped MSI an email, do you reckon a windows reinstall would help or should i just not bother and just RMA the board straight away?

Don't bother. If it just doesn't work with a PCIE lane that means there's a hardware issue.

[ElliotGS]

Don't bother. If it just doesn't work with a PCIE lane that means there's a hardware issue.

Ah ok will do, thanks for the help

[Sonefiler]

Ah ok will do, thanks for the help

No problem

[EricPont]

IT IS NOT THE POWER SUPPLY, it only draws around 650w from the wall under gaming load and under synthetic load it draws about 800w from the wall without crashing (this reading was taken from where the monitor and sound sytem is powered from too). People with the AX1200i get this problem so im 99% sure its not my power supply. I get the red screens with only one card in there anyway (in the second PCIE lane down with the top 16x lane empty).

 

At the minute im hoping reinstalling windows will fix this, if not i may have to RMA the motherboard as i think it may be a problem with the x8 PCIE lane.

only 99% so your not sure try borrowing a friends psu

[Sonefiler]

only 99% so your not sure try borrowing a friends psu

Its already determined to be the PCIE lane so its not the PSU

[EricPont]

I have crossfired asus 280X's and I pull 740 watts from the kill-a watt meter.  The 290X's use more power than the 280X's, get a larger PSU.

that what i said and hes like nooooooooooooo

[Midnitewarrior4]

Omg get over it, its not the psu everyone, hes found out the issue

[Socratic]

I would try updating graphics card BIOS and MB BIOS firs to see if that helped.