cancel
Showing results for 
Search instead for 
Did you mean: 
Terveg
Level 1
9 5 0 0
Message 1 of 3
306
Flag Post

Solved!

two GPU P4000 and K6000 on Z840 1125W

HP Recommended
Z840
Microsoft Windows 7 (64-bit)

I've searched across the forum but couldnt find reply on the following question:

i would like to use two GPU, one is 160W with 6-pin connector and second one is 235W with 2x6-pin connectors.

I have only 2x6-pin connectors, what adapter\partno do i need in order to run two GPUs?Can i use a sort of splitter?

1 ACCEPTED SOLUTION

Accepted Solutions
DGroves
Level 11
4,483 4,466 406 934
Message 3 of 3
Flag Post
HP Recommended

the z840 like the z820 with the 1275 watt upgraded supply should have 3 six pin gpu power connectors, so no adapters/splitters should be needed for your stated configuration

 

the stock 850 watt supply only has two six pin gpu connectors (GPU-1) if you have this supply you can not run your listed two video cards!!!

 

two gpu connectors are on GPU-1 rail

 

one  gpu connector is on GPU-2 rail

 

normally you want the  card with the two six pin connectors to be using a connector from each GPU rail (1 and 2)

this splits the load so each power rail is supplying only 115 watts, but since you will be using two video cards

 

 placing the 235 watt card on GPU-1 using both 6 pin connectors and the 160 watt card on GPU-2  is preferred in this case as gpu- is now 235 watts max, and gpu-2 is 160 watts max

 

note both gpu rails will be using just under 400 watts total,...... which is pushing the system to what HP specs as a safe wattage

View solution in original post

2 REPLIES 2
Terveg
Author
Level 1
9 5 0 0
Message 2 of 3
Flag Post
HP Recommended

and second question , can i use P4000 in combinations with K40? where to find this information and what adapters are needed?

0 Kudos
DGroves
Level 11
4,483 4,466 406 934
Message 3 of 3
Flag Post
HP Recommended

the z840 like the z820 with the 1275 watt upgraded supply should have 3 six pin gpu power connectors, so no adapters/splitters should be needed for your stated configuration

 

the stock 850 watt supply only has two six pin gpu connectors (GPU-1) if you have this supply you can not run your listed two video cards!!!

 

two gpu connectors are on GPU-1 rail

 

one  gpu connector is on GPU-2 rail

 

normally you want the  card with the two six pin connectors to be using a connector from each GPU rail (1 and 2)

this splits the load so each power rail is supplying only 115 watts, but since you will be using two video cards

 

 placing the 235 watt card on GPU-1 using both 6 pin connectors and the 160 watt card on GPU-2  is preferred in this case as gpu- is now 235 watts max, and gpu-2 is 160 watts max

 

note both gpu rails will be using just under 400 watts total,...... which is pushing the system to what HP specs as a safe wattage

View solution in original post

Warning Be alert for scammers posting fake support phone numbers and/or email addresses on the community. If you think you have received a fake HP Support message, please report it to us by clicking on "Flag Post".
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the Terms of Use and Rules of Participation