- Jun 12, 2017
- 5
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- 510
Short Story:
I have a GTX 1080 that crashes my computer (HP Z800) when put under load, presumable because of the PSU (almost 100% sure this is the case because it's instantly as soon as it gets under load—no time to get hot). After some research, my PSU (850W) has a single 18A 12V rail for the graphics card, the 1100W reportedly has 2-18A 12V rails for the graphics card. I'm wondering 1.) Is that true/where can I find technical specs on PSU's? And 2.) If it does have 2-18A 12V rails for the graphics card, would that actually fix the problem and supply enough power to the GTX 1080? Thank you for the help!
Long Story (only if you want the whole sad story):
I've been wanting to upgrade my graphics card for awhile now and due to the recent(-ish) price drop on the GTX 1080's I splurged and got one, thinking that my Z800's 850W PSU was more than enough to handle it and not taking a second thought.
When the card arrived I put it in the machine and realized that my Z800 only had 6-pin connectors, not the required 8-pin connectors. After researching online it seemed (almost) unanimous that a 6-to-8 pin adapter would do the trick, so I ordered a couple, hooked it up and it worked like a charm. I booted the machine, installed the drivers, and went to test it out on Steam's VR Benchmark Test to see how it was doing. The client started up and after about half a second my PC crashed. No blue screen—just a horrifying click, a black screen, and then after about 5 seconds it rebooted itself as if nothing had happened.
I don't know much about PSU's, but I knew enough to know that it was a PSU problem, and after some research it seems like the issue is that the Z800's 850W PSU only has a single 18A 12V rail for the graphics card which isn't enough power for the GTX 1080 (it says it needs 225W, which is what HP claims the 850W should do, but somewhere in practice it's not working out). I found a single person claiming that the 1100W PSU would fix the issue as it has 2-18A 12V rails to the graphics card. Again, I don't know much about PSU's, so I don't know if what they are saying is reliable or even makes sense, but it seems reasonable to me? I just wanted to get a second opinion from some more experienced PC builders to see if the 1100W PSU would fix the issue or just be a waste of a few hundred dollars. Thanks for the advice!
I have a GTX 1080 that crashes my computer (HP Z800) when put under load, presumable because of the PSU (almost 100% sure this is the case because it's instantly as soon as it gets under load—no time to get hot). After some research, my PSU (850W) has a single 18A 12V rail for the graphics card, the 1100W reportedly has 2-18A 12V rails for the graphics card. I'm wondering 1.) Is that true/where can I find technical specs on PSU's? And 2.) If it does have 2-18A 12V rails for the graphics card, would that actually fix the problem and supply enough power to the GTX 1080? Thank you for the help!
Long Story (only if you want the whole sad story):
I've been wanting to upgrade my graphics card for awhile now and due to the recent(-ish) price drop on the GTX 1080's I splurged and got one, thinking that my Z800's 850W PSU was more than enough to handle it and not taking a second thought.
When the card arrived I put it in the machine and realized that my Z800 only had 6-pin connectors, not the required 8-pin connectors. After researching online it seemed (almost) unanimous that a 6-to-8 pin adapter would do the trick, so I ordered a couple, hooked it up and it worked like a charm. I booted the machine, installed the drivers, and went to test it out on Steam's VR Benchmark Test to see how it was doing. The client started up and after about half a second my PC crashed. No blue screen—just a horrifying click, a black screen, and then after about 5 seconds it rebooted itself as if nothing had happened.
I don't know much about PSU's, but I knew enough to know that it was a PSU problem, and after some research it seems like the issue is that the Z800's 850W PSU only has a single 18A 12V rail for the graphics card which isn't enough power for the GTX 1080 (it says it needs 225W, which is what HP claims the 850W should do, but somewhere in practice it's not working out). I found a single person claiming that the 1100W PSU would fix the issue as it has 2-18A 12V rails to the graphics card. Again, I don't know much about PSU's, so I don't know if what they are saying is reliable or even makes sense, but it seems reasonable to me? I just wanted to get a second opinion from some more experienced PC builders to see if the 1100W PSU would fix the issue or just be a waste of a few hundred dollars. Thanks for the advice!
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