Posted: 31 May 2019 05:30 AM PDT

I've messed around with my RX470 8GB HYNIX memory I have. The BIOs is modded for Ubermix. I've tried STRAP -1 and RXBOOST -1 didn't see any improvement at all. Wondering if anyone else has had success getting some extra hash out of there GPUs using this? Playing around with it I started see memory errors around 2050mhz~ getting about 29.9mh/s it then crashed when I started lowering voltages.

So from my understanding according to claymore:

(Claymore Miner)

-strap applies specified memory timings (strap). Straps are sorted by intensity, i.e. "-strap 1" supports higher memory clock than "-strap 2", etc. For the best hashrate you must also set high memory clock, so "-strap 1" is a good start point for tests. You can specify just strap index, for example "-strap 1" will apply first strap from database for all Polaris GPUs based on GPU memory size and memory type, miner will show full strap name detected. Or you can specify strap directly in format "POL8S1": "POL" means Polaris, "8" means 8GB, "S" means Samsung memory, "1" means index. Zero index means default strap from VBIOS, i.e. no strap is applied. You can also use "@" character after strap to specify memory clock, it works like "-mclock" but overrides it, for example, "-strap POL4E2@1900". For Nvidia you can also specify delta, for example, "-strap 2@+700". You can also specify values for every card, for example "-strap 1@2100,POL4H3,0". If strap is applied, miner will return old strap and memory clock when miner is closed. The best approach to find best strap is to set "-strap 1,0" (it sets strap #1 for first card and no straps for the rest of GPUs) and then raise memory clock to see what clocks and hashrate you can reach. Then so the same for strap #2 etc.

I should be using a different strap? maybe 2? Then overclocking memory higher?

I also found this digging around the forums on AMDmem tweak

(BY Eliovp)

Well, open up the tool, and raise Refresh Rate (REF) i created a separate textbox for it to make it easy.

Raise it from 5 to 7/8 (just an example) and you'll see improvement already. Slightly dropping RFC will increase your hashrate as well.

old PBE one-click samsung straps (aka generaleramon's ubermix 3.2) on RX 4/5XX 8gb GPUs, and seeing subpar ETH h/rs due to the tight timings limiting mem clock frequencies... I've been able to get my samsung 580-8s more in-line w/ the microns (~32.5 MH/s) by loosening a couple settings which then allow raising the mem clock

--REF 10 --RC 70 --RFC 157 (from REF 5, RC 65, RFC 136)

mclock 2145-2185 (from 2085-2145)

tRFC:- Samsung memory (tCL is 22): 117- Hynix memory (tCL is 19): 124- Elpida memory (tCL is 21): 94

TRC = a limit for your memory clock, raising it will give you more stable higher memory clocks, lower it and you will get more performance (if you do not change your frequency) but memory could become unstable

Does Claymore's do the same or is it better to try the AMDmem tweak tool? I know its the same as far the Refresh or "RXBOOST" somewhere between 10-30.

submitted by /u/Xazax310
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Reminder: clean your rig.

Posted: 30 May 2019 10:36 AM PDT

Oh man, just today I was inspecting my rigs. There was actual spider web all over it !!!

submitted by /u/b10m1m1cry
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mining on linux vs windows

Posted: 30 May 2019 05:45 PM PDT

does mining windows vs linux have any benefit on performance in terms of hashrate? or other benefits? thanks

submitted by /u/cnnxcnnx
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Progpow Bitcoin interest

Posted: 30 May 2019 05:31 PM PDT

Anyone taking a look at this coin now that they are using progpow? Never heard of it till all the ethereum progpow talk