08-01-2018 06:42 AM - last edited on 03-06-2024 08:21 PM by ROGBot
08-01-2018 08:33 AM
Kinlyo123 wrote:
Hello dear forum people! I'm facing an issue with my newly bought rx580 and i would appreciate any advice. My problem is that when the card is connected to the psu via its 8pin cable the pc doesnt even boot, while when the cable is off it boots just fine. I was using a 7950 before, that needed 2x 6pin, with no issues at all. My specs are as follows:
Msi z87-g45 (bios v1.9)
i5 4670k
ROG Strix Radeon RX 580 TOP edition 8GB
G.Skill RipjawsX 16GB DDR3-2133MHz
Samsung 850 Evo 250GB
Coolermaster Real Power M1000
08-01-2018 10:57 AM
08-01-2018 08:13 PM
Kinlyo123 wrote:
I followed your suggestion and tested with different cables as unfortunately i dont have a 2nd psu available. My psu has 2x8pin and 2x6 pin slots and 4 cables for the said connectors. I got the following results:
Either 8pin connector via either 8(6+2)pin cable (tested with rx580) = no boot
Either 6pin connector via either 6 pin cable (tested with my older 7950) = working
Either 8pin connector via either 8(6+2)pin cable (using only the 6,tested with 7950) = working
Hope it helps
08-02-2018 03:39 AM
08-02-2018 04:34 AM
Kinlyo123 wrote:
Tested a bit more and it seems connecting psu's 6pin slot to the rx580's 8pin slot via a straight 6pin cable (leaving the 2 further left pins on the card empty) works and the pc boots normally. Also using psu's 8pin slot via a 6+2pin cable (leaving the +2 pins of the cable disconnected from the card) works too. So the rx580 works when i connect 6pins to its slot and leaving the 2 far left empty regardless of where the other end of the cable on the psu is connected.
08-02-2018 10:06 AM
Flint018 wrote:
Hi
I think you have to change your PSU,,, it might damage your GPu when 2pins less connected.
08-02-2018 12:08 PM
08-02-2018 12:15 PM
Kinlyo123 wrote:
As it was almost certain the issue was caused by either the psu or the cable i contacted coolermaster with the details of the problem. They asked me for some infos printed on the cables and we found out both 6+2 cables arent the original ones that should come with the psu but instead they have been replaced by some used on be-quiet! psu models. The rest of the cables are indeed proper ones. I never owned another psu aside from this coolermaster m1000 that i bought back in the distant 2009 or so when i built my very first rig and have been using it until now. It seems the reseller did some shady business back in the day but it never came to surface as i always used the 6pin cables only. Seems its time to get a new psu, connect the card properly and move on. Shame as the cm one worked great all those years.
Thank you guys for your time and advices!