HD 7990 zcash - 2 x 200 = 400 Sol (tempeture problem)

forato

full member

Activity: 237

Merit: 100

Quote from: ccccccc7 on December 20, 2016, 05:45:43 AM

Quote from: philipma1957 on December 19, 2016, 10:03:33 PM

Try intensity of 2 ,3 or 4

My hd7990s always had overheating issues when pushed.

You ran at I=2 3 or 4?

I have 2 7990 and if i put intensity above 1 it will eventually crash?

Am I missing something?

I have 1500w PSU, 8gb ram, 20gb virtual 2 x 7990 & 2 x 7950

try using only the 7990 with this psu.

maybe it is a psu problem

shadowhlohavec

full member

Activity: 207

Merit: 100

NoizChain

set corevoltage to 1120(try also lower but stability problems can appear) (clock-1090, emory m- 1415 i think, power limit 0 - (-5) , our 7990 running safe on 1120 78-82C, or buy some regular external fan , if it won't help set -li 4 and higher when using claymore miner

adaseb

legendary

Activity: 3808

Merit: 1723

Basically what everybody said here before. You first clean the fans, make sure the bearings aren't shot, make sure the thermal paste is new and fresh.

If this issue continues then you have an issue with your VMRs.

Qatuca

newbie

Activity: 184

Merit: 0

Quote from: forato on December 19, 2016, 08:53:49 PM

Hello I have on rig with a 7990. It is an amazing card but at cm 9.1 I am getting 95c and 72c of tempeture...
I have undervolted the card to get this at 1050mv with afterburner.

Does anyone knows why the card is so hot?

You need to undervolt and under clock further. I run my 7990 at 360 total and they are much cooler then.

ccccccc7

full member

Activity: 223

Merit: 100

Quote from: philipma1957 on December 19, 2016, 10:03:33 PM

Try intensity of 2 ,3 or 4

My hd7990s always had overheating issues when pushed.

You ran at I=2 3 or 4?

I have 2 7990 and if i put intensity above 1 it will eventually crash?

Am I missing something?

I have 1500w PSU, 8gb ram, 20gb virtual 2 x 7990 & 2 x 7950

ccccccc7

full member

Activity: 223

Merit: 100

I ripped the nonsense MSI triple fan unit off and zip tied 2x Yate Loon 140mm fans to the heat sink.

I now mine at 71c and does not go any higher.

You can do this with any high static pressure fans

majorlee

full member

Activity: 134

Merit: 100

First DJ to play gigs for Bitcoin & Crypto Guru

as they will be out of warranty i would re-apply good quality thermal paste to the chips - at least min 10degrees cooler u will see

have they been used before for other intensive mining? what brand are they?

my MSI's 7990's get around 410-420 run around 70-80 at no more than 60% fan

philipma1957

legendary

Activity: 4256

Merit: 8551

'The right to privacy matters'

Quote from: forato on December 19, 2016, 08:53:49 PM

Hello I have on rig with a 7990. It is an amazing card but at cm 9.1 I am getting 95c and 72c of tempeture...
I have undervolted the card to get this at 1050mv with afterburner.

Does anyone knows why the card is so hot?

Try intensity of 2 ,3 or 4

My hd7990s always had overheating issues when pushed.

forato

full member

Activity: 237

Merit: 100

Hello I have on rig with a 7990. It is an amazing card but at cm 9.1 I am getting 95c and 72c of tempeture...
I have undervolted the card to get this at 1050mv with afterburner.

Does anyone knows why the card is so hot?

Topic: HD 7990 zcash - 2 x 200 = 400 Sol (tempeture problem) (Read 1270 times)