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Author Topic: Custom RAM Timings for GPU's with GDDR5 - DOWNLOAD LINKS - UPDATED  (Read 128148 times)
heavyarms1912
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April 11, 2018, 01:54:26 PM
 #1141

The stock votlage for the 580 is 1150mv for 1380Mhz core. Same as the RX 480. The 480 runs at 1300Mhz core. It can be safely undervolted to 1050mv. The 580 can be undervolted to 1075mv (this particualr one, the 2nd 580 i have can go 1050mv). Those cards can do 900-1050mv if they are underclocked as well (the 470 can do 975mv at 1225Mhz core).

So you already know why the power consumption is high.  And that makes your efficiency at 1070/140w around ~7.7 while it can be 9.5-10.
RX570/RX580 can do 1200-1250 @ 850-875mV.  In fact I run all my RX570/RX580 in those range.  Some cards need 887-900mV.
eg. https://anorak.tech/uploads/default/original/2X/d/d540bbb14e2c506f2c8efe62c3d475cedd44885f.JPG (HWinfo shows chip power is 62w.  Actual wattage from wall is 95-100w)
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laik2
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April 11, 2018, 05:37:19 PM
 #1142

Tighten rfc, *wr just a bit, push core to 1200-1266, leave mclk same as ethash( mine are mostly 2150+ ), set voltage ~900mV and start hashing.
This gives ~1kH at just 640W @wall for 6x RX580 mixed.

ZEC: t1KbbHtXqzSS6qHBaPZDKyWnzxhRjr9oCtW
Larvitar
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April 11, 2018, 06:05:40 PM
 #1143

Tighten rfc, *wr just a bit, push core to 1200-1266, leave mclk same as ethash( mine are mostly 2150+ ), set voltage ~900mV and start hashing.
This gives ~1kH at just 640W @wall for 6x RX580 mixed.

laik, try SRBMiner with "trial and error" tests to find the best intensity. I'm reaching 1000H/s in RX570 Elpida (CryptonightV7) with no-so tweaked timings. Are your 580 4 or 8GB variants?

I'll try your tips. Thank your for your support!
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April 12, 2018, 06:56:55 PM
Merited by Eliovp (5)
 #1144

SRBminer is windows only. I do not plan to start using windows for mining.
PP: At the end , efficiency is the ultimate goal. Chasing higher hashrate sometimes leads to lowering efficiency.

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nerdralph
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April 23, 2018, 12:50:19 PM
 #1145

SRBminer is windows only. I do not plan to start using windows for mining.
PP: At the end , efficiency is the ultimate goal. Chasing higher hashrate sometimes leads to lowering efficiency.

The performance/efficiency tradeoff in ethash is becoming less significant with newer hardware.  With a R9 290 card it was very difficult to maximize performance without increasing power consumption.  With Polaris, where performance is mainly limited by memory and not the core clock, it is much easier to get near peak performance with minimal power.

That said, I think there is room for some tangible improvements in ethash (and probably cryptonight) mining efficiency through optimizing the mining kernel.  For example a Rx 580 doesn't need active 36 CUs to do 30Mh/s; it's closer to 1 CU per Mh.
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April 23, 2018, 04:07:56 PM
 #1146

I'm guessing this thread is expected to be AMD, but GTX 1060-1070ti are also GDDR5, has anyone made leeway there?

I seem to find that the expected timing enhancements do not bring much enhancement. GDDR5X has been a lot more interesting but i suppose that would be OT.

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Branko
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April 23, 2018, 04:41:26 PM
 #1147

I'm guessing this thread is expected to be AMD, but GTX 1060-1070ti are also GDDR5, has anyone made leeway there?

I seem to find that the expected timing enhancements do not bring much enhancement. GDDR5X has been a lot more interesting but i suppose that would be OT.

AFAIK Nvidia timings are not changeable, be it GDDR5 or GDDR5X

heavyarms1912
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April 23, 2018, 05:09:26 PM
 #1148

I'm guessing this thread is expected to be AMD, but GTX 1060-1070ti are also GDDR5, has anyone made leeway there?

I seem to find that the expected timing enhancements do not bring much enhancement. GDDR5X has been a lot more interesting but i suppose that would be OT.

AFAIK Nvidia timings are not changeable, be it GDDR5 or GDDR5X

I think laik2 has successfully experimented with Nvidia cards.
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April 23, 2018, 05:59:45 PM
 #1149

I'm guessing this thread is expected to be AMD, but GTX 1060-1070ti are also GDDR5, has anyone made leeway there?

I seem to find that the expected timing enhancements do not bring much enhancement. GDDR5X has been a lot more interesting but i suppose that would be OT.

AFAIK Nvidia timings are not changeable, be it GDDR5 or GDDR5X

I was under the same impression until some time ago. I thought its possible to have something in the works, and it turns out i was correct to myself. It is not possible for the public. There are some stuff, which are confidential and allow some sort of control.

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Branko
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April 23, 2018, 06:02:31 PM
 #1150

I'm guessing this thread is expected to be AMD, but GTX 1060-1070ti are also GDDR5, has anyone made leeway there?

I seem to find that the expected timing enhancements do not bring much enhancement. GDDR5X has been a lot more interesting but i suppose that would be OT.

AFAIK Nvidia timings are not changeable, be it GDDR5 or GDDR5X

I was under the same impression until some time ago. I thought its possible to have something in the works, and it turns out i was correct to myself. It is not possible for the public. There are some stuff, which are confidential and allow some sort of control.

Of course, I didn't say its impossible, but keys are distributed to card manufacturers and probably under very strict NDA

Those card makers have to be able to program their cards firmware, after all Smiley

Larvitar
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April 23, 2018, 06:30:21 PM
 #1151

I'm guessing this thread is expected to be AMD, but GTX 1060-1070ti are also GDDR5, has anyone made leeway there?

I seem to find that the expected timing enhancements do not bring much enhancement. GDDR5X has been a lot more interesting but i suppose that would be OT.

AFAIK Nvidia timings are not changeable, be it GDDR5 or GDDR5X

I was under the same impression until some time ago. I thought its possible to have something in the works, and it turns out i was correct to myself. It is not possible for the public. There are some stuff, which are confidential and allow some sort of control.

Of course, I didn't say its impossible, but keys are distributed to card manufacturers and probably under very strict NDA

Those card makers have to be able to program their cards firmware, after all Smiley

I'm very curious about this. But I think it wont bee available to common users.

It can be a new biosmod revolution
ordimans
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Today at 06:46:00 AM
 #1152

Hello

I have Asus 570 Expedition, and cannot have more 26mh/s on Windows or Hiveos but just for one unit...
It's Hynix H5GC4H24AJR.

Original :
2000:BBB000000000000022889D0073EE8D53805515133ECF560C004E26017E0514206A8900A00200312 01C143840C5303F17
1750:999000000000000022559D0031627C489055131339CDD50A004C06017D0514206A8900A00200312 019123037AD2C3A17
1625:999000000000000022559D0010DE7B4480551312B78C450A004C0601750414206A8900A00200312 018112D34A42A3816

Custom :
1500-2000:999000000000000022559D0010DE5B4480551312B74C450A00400600750414206A8900A00200312 010112D34A42A3816

2050/825mv for Mem
1150/750 for Core

That work on many units except one.

There is another strap or tips in this case ?
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