after 48 hours of troubleshooting just 1 gpu not working left! (1070)

[onlinehandelen]

Hi guys,

After a lot of forums, youtube vids and tomshardware I have managed to fix 5 gpus that weren't working well before, just one left! I even managed to make a dual rig amd+nividia. Anyway, let's get to the case:

The problem is with a 1070. If I put it directly in the 16 lane slot in motherboard, it works. If I place it on a riser (for temperature control) in the rig, it wont work and my PC won't boot. I am sure I am doing something wrong. I have 7th generation risers with the 6 pin to SATA and the 1070 needs 2x6 pin to 8 pin to psu. I tried the following:

both 2x6+2 (the +2 not needed) to the psu, 6 pin to sata from riser to a fresh sata cable with space for 3 more sata connections but I use only this sata slot (as per Angry Chickens video never more than 2 on same SATA line. Question I have here is is my card getting to much power and that's why psu prevents booting (75 per input, makes for 225 total and only 150 needed)?

Questions: 

1. Would it work if I leave the 2x6 pin in (gpu to psu) and then just unplug the sata as a whole as riser/card get's enough power anyway?
2. I really don't want to do this but if it's only exception.... can I use 2 6 pin to molex and then a fresh 3-4 slot molex cable from psu to riser/gpu?

Kind regards,

D

[bathrobehero]

Wattage is not "pushed" to the cards, it's "pulled" so it can't have too much power in that sense. The card will decide how much it will try to use.

If anything, the PSU might not be able to feed all the cards so it won't even turns on. But that's unlikely unless your PSU is really low capacity.

What motherboard and PSU do you have?

[onlinehandelen]

Hi Bathrobe, thanks for your quick response again. I have a biostar tb250-btc pro motherboard and psu is silverstone 1200-pt. With 1200w and platinum 600w from wall before adding next card, it should go to 750/1200 used, should be able to work right or i am doing something wrong yet again.

Kind regards,

D

[bathrobehero]

Hi Bathrobe, thanks for your quick response again. I have a biostar tb250-btc pro motherboard and psu is silverstone 1200-pt. With 1200w and platinum 600w from wall before adding next card, it should go to 750/1200 used, should be able to work right or i am doing something wrong yet again.

Kind regards,

D

It should work, yes. If you replaced the risers and swapped cards around (to see if one card is faulty or whatever card you try to use as the 6th) then I don't know what could be wrong. It could be a BIOS option or a faulty PSU but both of which is unlikely.

[Vann]

Try setting the PCI-E slot for the X16 slot to GEN 3 in the Bios and connect the 1070 riser to that slot.