Best PSU for R9 390 series

[forato]

Hello gus..

I have some rigs with RX 480 cards (5 or 6 cards each one) and i use 2 psu x 850W in each Rig.

Now i am making some R9 390 rigs.. But i can see that i will need at least 850W PSU for 2 cards.. I tryed to power on 3 cards on a 1000W gold plus PSU and sometimes it goes off..

Is this normal? 

[adaseb]

Hello gus..

I have some rigs with RX 480 cards (5 or 6 cards each one) and i use 2 psu x 850W in each Rig.

Now i am making some R9 390 rigs.. But i can see that i will need at least 850W PSU for 2 cards.. I tryed to power on 3 cards on a 1000W gold plus PSU and sometimes it goes off..

Is this normal? 

Undervolt those 390s. 3 should work on a 1000W PSU.

[Charloz24]

Hello gus..

I have some rigs with RX 480 cards (5 or 6 cards each one) and i use 2 psu x 850W in each Rig.

Now i am making some R9 390 rigs.. But i can see that i will need at least 850W PSU for 2 cards.. I tryed to power on 3 cards on a 1000W gold plus PSU and sometimes it goes off..

Is this normal? 

3 on 1000W should do the job, try undervolting maybe? (- 100mv)

I run 3X 290 on a 850W...

[eckmar]

Hey, maybe you can try to modify server PSU. They are much more stable under load and much more efficient than normal PSUs. I saw a lot of guys do that so i did it few months ago and it's working fine under full load (1000w). You can search this forum, a guy posted tutorial few years back, and best of all 1000w PSU i found for less than 50$

[antantti]

1000w gold psu should easily feed 3x390 everything default.

[forato]

1000w gold psu should easily feed 3x390 everything default.

thats not correct friend..

Sometimes a R9 goes to 400W 3x400 = 1200W

If you use dual mining ETH + DECRED for example, unfortuny this happen.. (on stock)

[antantti]

1000w gold psu should easily feed 3x390 everything default.

thats not correct friend..

Sometimes a R9 goes to 400W 3x400 = 1200W

If you use dual mining ETH + DECRED for example, unfortuny this happen.. (on stock)

You are right, forgot someone could be dualmining.

Give me one example where 1000w can't feed 3x390, launch config. I will try it right away.

[forato]

1000w gold psu should easily feed 3x390 everything default.

thats not correct friend..

Sometimes a R9 goes to 400W 3x400 = 1200W

If you use dual mining ETH + DECRED for example, unfortuny this happen.. (on stock)

You are right, forgot someone could be dualmining.

Give me one example where 1000w can't feed 3x390, launch config. I will try it right away.

i tryed here with zcash v8 (works)

the problem on my rigs with psu is when i use this:

Claymore's Dual Ethereum+Decred_Siacoin_Lbry AMD+NVIDIA GPU Miner v7.3
6 x r9 390 (powercolor)
2x 1000W gold plus PSU

tryed on 2 rigs

1 - Work for 4 hours than reset
2 - Reset after 20 minutes (and i thought the psu was broken, but is wasa not)

[antantti]

1000w gold psu should easily feed 3x390 everything default.

thats not correct friend..

Sometimes a R9 goes to 400W 3x400 = 1200W

If you use dual mining ETH + DECRED for example, unfortuny this happen.. (on stock)

You are right, forgot someone could be dualmining.

Give me one example where 1000w can't feed 3x390, launch config. I will try it right away.

i tryed here with zcash v8 (works)

the problem on my rigs with psu is when i use this:

Claymore's Dual Ethereum+Decred_Siacoin_Lbry AMD+NVIDIA GPU Miner v7.3
6 x r9 390 (powercolor)
2x 1000W gold plus PSU

tryed on 2 rigs

1 - Work for 4 hours than reset
2 - Reset after 20 minutes (and i thought the psu was broken, but is wasa not)

So you have two 3x390 rigs? Or two 6x390? Or one 6x390 rig powered by 2x1000w psu?

[forato]

1000w gold psu should easily feed 3x390 everything default.

thats not correct friend..

Sometimes a R9 goes to 400W 3x400 = 1200W

If you use dual mining ETH + DECRED for example, unfortuny this happen.. (on stock)

You are right, forgot someone could be dualmining.

Give me one example where 1000w can't feed 3x390, launch config. I will try it right away.

i tryed here with zcash v8 (works)

the problem on my rigs with psu is when i use this:

Claymore's Dual Ethereum+Decred_Siacoin_Lbry AMD+NVIDIA GPU Miner v7.3
6 x r9 390 (powercolor)
2x 1000W gold plus PSU

tryed on 2 rigs

1 - Work for 4 hours than reset
2 - Reset after 20 minutes (and i thought the psu was broken, but is wasa not)

So you have two 3x390 rigs? Or two 6x390? Or one 6x390 rig powered by 2x1000w psu?

i made the test in 2 Rigs

each one has the same conf. (6 x r9 390 - 2 x 1000W PSU)

TOTAL:
12 x r9 390 - 4000W

[antantti]

i made the test in 2 Rigs

each one has the same conf. (6 x r9 390 - 2 x 1000W PSU)

TOTAL:
12 x r9 390 - 4000W

Ok, give me your .bat file, one 3x390 ready with power meter.

[forato]

i made the test in 2 Rigs

each one has the same conf. (6 x r9 390 - 2 x 1000W PSU)

TOTAL:
12 x r9 390 - 4000W

Ok, give me your .bat file, one 3x390 ready with power meter.

this is my .bat file:

Code:

setx GPU_FORCE_64BIT_PTR 0
setx GPU_MAX_HEAP_SIZE 100
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_SINGLE_ALLOC_PERCENT 100
ZecMiner64.exe -zpool eu1-zcash.flypool.org:3333 -zwal t1LRjjpNF791MJ9XScnUnqxhAaL5EbeCmjt.RIG04 -zpsw x -i 8 -mport -3347 -fanmin 70 

[antantti]

i made the test in 2 Rigs

each one has the same conf. (6 x r9 390 - 2 x 1000W PSU)

TOTAL:
12 x r9 390 - 4000W

Ok, give me your .bat file, one 3x390 ready with power meter.

this is my .bat file:

Code:

setx GPU_FORCE_64BIT_PTR 0
setx GPU_MAX_HEAP_SIZE 100
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_SINGLE_ALLOC_PERCENT 100
ZecMiner64.exe -zpool eu1-zcash.flypool.org:3333 -zwal t1LRjjpNF791MJ9XScnUnqxhAaL5EbeCmjt.RIG04 -zpsw x -i 8 -mport -3347 -fanmin 70 

And your core/mem/power settings?

[forato]

i made the test in 2 Rigs

each one has the same conf. (6 x r9 390 - 2 x 1000W PSU)

TOTAL:
12 x r9 390 - 4000W

Ok, give me your .bat file, one 3x390 ready with power meter.

this is my .bat file:

Code:

setx GPU_FORCE_64BIT_PTR 0
setx GPU_MAX_HEAP_SIZE 100
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_SINGLE_ALLOC_PERCENT 100
ZecMiner64.exe -zpool eu1-zcash.flypool.org:3333 -zwal t1LRjjpNF791MJ9XScnUnqxhAaL5EbeCmjt.RIG04 -zpsw x -i 8 -mport -3347 -fanmin 70 

And your core/mem/power settings?

All Stocks...

[antantti]

Looking at your .bat it is not your psu. I will try to mine for you anyway.

Try to lower that intensity.

[forato]

Looking at your .bat it is not your psu. I will try to mine for you anyway.

Try to lower that intensity.

sorry friend, i give you the incorrect .bat...


the correct one is from dual miner:

Code:

EthDcrMiner64.exe -epool stratum+tcp://daggerhashimoto.usa.nicehash.com:3353 -ewal 1GRCbptUfugWgXjmadquWEi1SxfDDkg2Wo.RIG04 -epsw x -eworker escritorio -esm 3 -allpools 1 -estale 1 -dpool stratum+tcp://decred.eu.nicehash.com:3354 -dwal 1GRCbptUfugWgXjmadquWEi1SxfDDkg2Wo.RIG04

[antantti]

1060w at the wall, how long do I need to run this?  

edit: 29 eth + 435 dcr if someone is interested.

[forato]

1060w at the wall, how long do I need to run this?  

edit: 29 eth + 435 dcr if someone is interested.

1060 for how many cards?

[antantti]

1060w at the wall, how long do I need to run this?  

edit: 29 eth + 435 dcr if someone is interested.

1060 for how many cards?

3 

[forato]

1060w at the wall, how long do I need to run this?  

edit: 29 eth + 435 dcr if someone is interested.

1060 for how many cards?

3 

Nice tests friend...

1060 is just a little bit higher then 1000. Maybe undervolting is a good choice...

Or maybe buy more PSU... Or use rx480 😀