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Sapphire Radeon RX 6800 XT NITRO+ review
Posted by: on: 11/25/2020 03:00 PM [
84 comment(s) ]
Just over a week ago, AMD unleashed Big Navi, the prodigal sons and sisters are now out and make their way through the AIB partners. In this review, we test the Sapphire Radeon RX 6800 XT NITRO+ based on a custom PCB, custom cooler, and increased clock frequencies.
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kapu
Senior Member
Posts: 4345
Senior Member
Posts: 4345
Posted on: 11/27/2020 10:31 AM
Can't recommend you to put such load on that PSU via one rail. If it burns, it can take 1/2 of PC with it.
If you can't get 2nd cable, get new PSU.
I can buy cable. Costs 15 euro hahah. I think it will be fine with two cables. Im 99% that's the problem here.
Can't recommend you to put such load on that PSU via one rail. If it burns, it can take 1/2 of PC with it.
If you can't get 2nd cable, get new PSU.
I can buy cable. Costs 15 euro hahah. I think it will be fine with two cables. Im 99% that's the problem here.
Fox2232
Senior Member
Posts: 11380
Senior Member
Posts: 11380
Posted on: 11/27/2020 10:38 AM
PSU is rated 55A on +12V: V1~V4 together. V1/V2 are for MB/CPU. So, do not get over 660W in sum of MB, CPU, GPU And 2nd cable should be fine.
There is only little problem. GPUs eat certain amount of energy on average (300W default power limit). But within each frame, different parts of GPU work in each time interval. That means GPU can be pulling 15A as minimum and maybe 35A as maximum in certain milliseconds, but will average to 25A over time.
So, I would not OC in any way. If anything, undervolt a bit.
I can buy cable. Costs 15 euro hahah. I think it will be fine with two cables. Im 99% that's the problem here.
PSU is rated 55A on +12V: V1~V4 together. V1/V2 are for MB/CPU. So, do not get over 660W in sum of MB, CPU, GPU And 2nd cable should be fine.
There is only little problem. GPUs eat certain amount of energy on average (300W default power limit). But within each frame, different parts of GPU work in each time interval. That means GPU can be pulling 15A as minimum and maybe 35A as maximum in certain milliseconds, but will average to 25A over time.
So, I would not OC in any way. If anything, undervolt a bit.
kapu
Senior Member
Posts: 4345
Senior Member
Posts: 4345
Posted on: 11/27/2020 10:47 AM
PSU is rated 55A on +12V: V1~V4 together. V1/V2 are for MB/CPU. So, do not get over 660W in sum of MB, CPU, GPU And 2nd cable should be fine.
There is only little problem. GPUs eat certain amount of energy on average (300W default power limit). But within each frame, different parts of GPU work in each time interval. That means GPU can be pulling 15A as minimum and maybe 35A as maximum in certain milliseconds, but will average to 25A over time.
So, I would not OC in any way. If anything, undervolt a bit.
With 2 cables i should be above that , but 1 cable is tight , very tight. Problem is , it runs RD2/Valhalla for 30-40 min , then it crashes, its not instant .
PSU is rated 55A on +12V: V1~V4 together. V1/V2 are for MB/CPU. So, do not get over 660W in sum of MB, CPU, GPU And 2nd cable should be fine.
There is only little problem. GPUs eat certain amount of energy on average (300W default power limit). But within each frame, different parts of GPU work in each time interval. That means GPU can be pulling 15A as minimum and maybe 35A as maximum in certain milliseconds, but will average to 25A over time.
So, I would not OC in any way. If anything, undervolt a bit.
With 2 cables i should be above that , but 1 cable is tight , very tight. Problem is , it runs RD2/Valhalla for 30-40 min , then it crashes, its not instant .
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Senior Member
Posts: 11380
Can't recommend you to put such load on that PSU via one rail. If it burns, it can take 1/2 of PC with it.
If you can't get 2nd cable, get new PSU.