Claymore's ZCash/BTG AMD GPU Miner v12.6 (Windows/Linux)

[BigWolf]

Has anyone found a reliable bios mod for the Sapphire rx 480 8g cards that reduces power but keeps the h/s rate respectable?  Most of what I have found on forums have been unstable.  I have 4 rigs with 6x Sapphire 8g 480's that each run at around 1200w (and I have a 1300w psu) and 11.5A  and deliver 260 H/s on each card with the stock bios and I am having to reduce their intensity each time the mining software speeds the mining up or the whole platform shuts down due to exceeding power limits.  I have played with different power tools such as Watttool (Wattman is useless for multiple cards and settings in Claymore just freeze my systems) but I am a bit of an inexperienced computer user so I am not sure what to try and I don't want to damage my systems.  I have read every page of this forum as I have worked through all the same issues with Open CL and cards not being recognized, and I appreciate the degree this forum supplies ideas and methods to help others work through their issues.  So I am asking my first question around suggested settings in Watt tool or perhaps even a stable and capable bios mod that keeps power down while not giving up on the current performance, if possible.  Any help is appreciated.

why not just download MSI afterburner, and bring voltage down to about -75mv to start off, see if its stable.  1200w is too much !  By undervolting you'll get a lot of power savings.

Is there a 'chart' somewhere for undervolting? I have a mix of 390/290/290x/380/280 etc. and would love to find a way to undervolt them to save power but don't really want to do it 'card by card'.

Or am I better off just using Wattman to drop the power 'safely' to wherever each rig will run without crashing?

What speeds are you getting off of your 380 cards?       I'm only getting about 160H/s on mine and trying to figure out if that is normal.  Seems low.

[tanatana]

asus r9 280x edited bios stock and r9 390x no edited bios clocked 1102@1500
https://i.imgur.com/S7S9Mao.png

[Astennu]

i use 295x2 to mining, now hashing at 560 sol, this normal?

I'm afraid so. Im currently working on one and i have a hard time getting it above 300 sol/s per GPU.
I got it up to 306 now. With claymore V11 -asm1 -i 5

Clocks 975-1375 @ 1.105v
Memory timings are 1250MHz strap.
15.12 drivers (still having problems with newer drivers mining software just crashes after a few sec)

Timings did the trick to kick it +20 sol/s per GPU higher.

Voltages are bios modded card seems game stable so its not at the stability limit for mining.

But somehow these cards wont go as fast as the 390X. I also think 290X with different Hynix modules and Stilt timings would do even better.
When i test oclmembench im at +- 250Gb/s a 7970 with stilt timings does +- 230 with 1375Mhz. And those cards do +- 270 sols with 1000-1375 MHz.
ASM is more effective for those cards tho. Without they would do 235-240.

Only thing i can do now is do the 390X MC bios MOD but i have to do a lot more reading on that. Not that simple to do. Took me some time to figure out the timings but thats easy compared to the MC mod.

i use 295x2 to mining, now hashing at 560 sol, this normal?

that seems to be low for 2x290s a single 290x is over 300 sols

seems normal. my 290x does 340 but is modded as a 390x. before was doing in the 280 range

Did you do the mod yourself? or did you download a premade bios. I have seen those for the 290X but not for the 295X2. Not enough people owning those cards.

[Thor78]

http://i68.tinypic.com/2rrlc04.jpg
My MSI RX480 4Gb cant run at I8 on 11.1. Using 16.12.2

Anyone get the same problem?

I get the same problem, Im using radeon-crimson-16.4.2 on R9 280x

[Le_Bleu]

Hello guys,

I have  a question about drivers.
On my rigs i have 3x RX 470 and 1x 290X, actually all with 16.10.1 WHQL driver.

Is it possible to mix driver on the same host ? Keep 16.10.1 on RX 470 and use 15.12 on 290X only.
What about stabillity ?

[BitJunkie556]

Hmm... Seems 280x got a massive speed increase, but my 285 is still at 165, vs 260 h/s from 280x. What's up with that? Otherwise, my 390 is ballin' at 355 sol/s and RX 480's are looking great as well!

 

[chronek]

know anyone if 17.1.1 driver support modded bios?

[GH]

i use 295x2 to mining, now hashing at 560 sol, this normal?

I'm afraid so. Im currently working on one and i have a hard time getting it above 300 sol/s per GPU.
I got it up to 306 now. With claymore V11 -asm1 -i 5

Clocks 975-1375 @ 1.105v
Memory timings are 1250MHz strap.
15.12 drivers (still having problems with newer drivers mining software just crashes after a few sec)

Timings did the trick to kick it +20 sol/s per GPU higher.

Voltages are bios modded card seems game stable so its not at the stability limit for mining.

But somehow these cards wont go as fast as the 390X. I also think 290X with different Hynix modules and Stilt timings would do even better.
When i test oclmembench im at +- 250Gb/s a 7970 with stilt timings does +- 230 with 1375Mhz. And those cards do +- 270 sols with 1000-1375 MHz.
ASM is more effective for those cards tho. Without they would do 235-240.

Only thing i can do now is do the 390X MC bios MOD but i have to do a lot more reading on that. Not that simple to do. Took me some time to figure out the timings but thats easy compared to the MC mod.

i use 295x2 to mining, now hashing at 560 sol, this normal?

that seems to be low for 2x290s a single 290x is over 300 sols

seems normal. my 290x does 340 but is modded as a 390x. before was doing in the 280 range

Did you do the mod yourself? or did you download a premade bios. I have seen those for the 290X but not for the 295X2. Not enough people owning those cards.

I do not have experience with the 295x2, but I can image you hit the limits faster than on single cards.
My 390s (non-x) are all running average above 360 H/s with OC and stock BIOS.
And yes - my modded 290X was even doing 380 H/s (!) - and also cooler than stock. I now reduced the clocks for stability as it's the primary card in a workstation, but it's still at 355-360 H/s.

[jenia1]

i have a rig 6x sapphire nitro RX 480 8GB, all cards are flashed with last 2 memory straps same.
yet i get only 263H/s maximum from each card... any ideas why?

[IOTUSA]

Can someone tell me the Max power draw for a stock Rx 480 4GB? Trying to figure out a PSU for a 6 x 480 rig.

[BALTA00]

with v11.1 i am getting ZecMiner64 low memory error message but with v11 i dont get any low memory error messages.

going to stick to v11 for now.

Increase your swap-drive size to set @ 16 GB

on a related note windows 10 updates reverse it back to 4096

Yeah Windows 10 updates are a damn pain. Regedit that shit OUT!

shit man i forgot about the registry editor, do you know under what hkey is in

Use it in a .bat file:

Code:

REG ADD "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory management" /v PagingFiles /t REG_MULTI_SZ /d "C:\pagefile.sys 16384 20480" /f

[GH]

Can someone tell me the Max power draw for a stock Rx 480 4GB? Trying to figure out a PSU for a 6 x 480 rig.

Use nominal values from datasheet for this purpose (=150 W) and add proper headroom for overclock, spikes and working point at good efficiency.

[IOTUSA]

Can someone tell me the Max power draw for a stock Rx 480 4GB? Trying to figure out a PSU for a 6 x 480 rig.

Use nominal values from datasheet for this purpose (=150 W) and add proper headroom for overclock, spikes and working point at good efficiency.

So a gold rated 1200W PSU for 6 x 480 + MB with Celeron-CPU and risers/SATA should be just fine in other words. Even without undervolting.

[GH]

Can someone tell me the Max power draw for a stock Rx 480 4GB? Trying to figure out a PSU for a 6 x 480 rig.

Use nominal values from datasheet for this purpose (=150 W) and add proper headroom for overclock, spikes and working point at good efficiency.

So a gold rated 1200W PSU for 6 x 480 + MB with Celeron-CPU and risers/SATA should be just fine in other words. Even without undervolting.

Would be too close for me. To max out the cards under all conditions my bet would be more at 1600W. You do not want to run the PSUs the whole time at nearly full load, even if it might work for a surprisingly long time with high quality models.
But that's one of the reasons I don't build rigs with more than 4 GPUs. It's much better to handle while having a greater and cheaper selection of components.
Edit: and I already tried and "grilled" a number of them...

[IOTUSA]

Can someone tell me the Max power draw for a stock Rx 480 4GB? Trying to figure out a PSU for a 6 x 480 rig.

Use nominal values from datasheet for this purpose (=150 W) and add proper headroom for overclock, spikes and working point at good efficiency.

So a gold rated 1200W PSU for 6 x 480 + MB with Celeron-CPU and risers/SATA should be just fine in other words. Even without undervolting.

Would be too close for me. To max out the cards under all conditions my bet would be more at 1600W. You do not want to run the PSUs the whole time at nearly full load, even if it might work for a surprisingly long time with high quality models.
But that's one of the reasons I don't build rigs with more than 4 GPUs. It's much better to handle while having a greater and cheaper selection of components.

1600w? Their max TDP is like 160w, how can I get to 1600w with 6x?

[adaseb]

I had my 470 4gb run at like 200watts before. This was one with very bad ASIC quality, ETH+SIA dual mining, under stock voltages.

VRMs were cooking at like 100C.

SO yeah they can use huge amounts of power if you don't under volt properly.

[sanas]

Can someone tell me the Max power draw for a stock Rx 480 4GB? Trying to figure out a PSU for a 6 x 480 rig.

Use nominal values from datasheet for this purpose (=150 W) and add proper headroom for overclock, spikes and working point at good efficiency.

So a gold rated 1200W PSU for 6 x 480 + MB with Celeron-CPU and risers/SATA should be just fine in other words. Even without undervolting.

It is better to make farm with a reserve power supply for future algorithms, which can be more demanding. This is usually done so, it is considered necessary power of consumers and mount a 20% of the stock. 6 cards x 150 = 900 + 100 (system)=1000 + 20%= 1200W will be good.

[IOTUSA]

Can someone tell me the Max power draw for a stock Rx 480 4GB? Trying to figure out a PSU for a 6 x 480 rig.

Use nominal values from datasheet for this purpose (=150 W) and add proper headroom for overclock, spikes and working point at good efficiency.

So a gold rated 1200W PSU for 6 x 480 + MB with Celeron-CPU and risers/SATA should be just fine in other words. Even without undervolting.

It is better to make farm with a reserve power supply for future algorithms, which can be more demanding. This is usually done so, it is considered necessary power of consumers and mount a 20% of the stock. 6 cards x 150 = 900 + 100 (system)=1000 + 20%= 1200W will be good.

Ok, going for EVGA G2 1300W to be safe. Should set my mind to rest.

[GH]

Can someone tell me the Max power draw for a stock Rx 480 4GB? Trying to figure out a PSU for a 6 x 480 rig.

Use nominal values from datasheet for this purpose (=150 W) and add proper headroom for overclock, spikes and working point at good efficiency.

So a gold rated 1200W PSU for 6 x 480 + MB with Celeron-CPU and risers/SATA should be just fine in other words. Even without undervolting.

Would be too close for me. To max out the cards under all conditions my bet would be more at 1600W. You do not want to run the PSUs the whole time at nearly full load, even if it might work for a surprisingly long time with high quality models.
But that's one of the reasons I don't build rigs with more than 4 GPUs. It's much better to handle while having a greater and cheaper selection of components.

1600w? Their max TDP is like 160w, how can I get to 1600w with 6x?

It will not consume 1600W, but it would be a good choice for the PSU size:
Load working point of the PSU. Sweet spot of a gold rated one is around 50% load. So if you run it between 50 and say 75% you will have nearly highest efficiency, stability, reserves, lifetime and no thermal problems. From the technical view this would be the right way.
But if you like you can also use a 1000W PSU for a 1000W load. Should work on the paper. Maybe. For a more or less long period of time. As I said, I already tested a lot and I will avoid such combinations in the future.
And don't forget it's 24x7 load.

[IOTUSA]

Can someone tell me the Max power draw for a stock Rx 480 4GB? Trying to figure out a PSU for a 6 x 480 rig.

Use nominal values from datasheet for this purpose (=150 W) and add proper headroom for overclock, spikes and working point at good efficiency.

So a gold rated 1200W PSU for 6 x 480 + MB with Celeron-CPU and risers/SATA should be just fine in other words. Even without undervolting.

Would be too close for me. To max out the cards under all conditions my bet would be more at 1600W. You do not want to run the PSUs the whole time at nearly full load, even if it might work for a surprisingly long time with high quality models.
But that's one of the reasons I don't build rigs with more than 4 GPUs. It's much better to handle while having a greater and cheaper selection of components.

1600w? Their max TDP is like 160w, how can I get to 1600w with 6x?

It will not consume 1600W, but it would be a good choice for the PSU size:
Load working point of the PSU. Sweet spot of a gold rated one is around 50% load. So if you run it between 50 and say 75% you will have nearly highest efficiency, stability, reserves, lifetime and no thermal problems. From the technical view this would be the right way.
But if you like you can also use a 1000W PSU for a 1000W load. Should work on the paper. Maybe. For a more or less long period of time. As I said, I already tested a lot and I will avoid such combinations in the future.
And don't forget it's 24x7 load.

50% load sweet spot? That can't be even remotely true. I agree that having some headroom is good but running 1600w for 800w load is just not a thing.