I'm modding a bios for someone(RX580 8GB Hynix) i noticed the bios doesnt have any mem straps above 1500?? why is this and how can I mod it?

840 is huge for elpida

My RX 470 4 GB Elpida Card makes 890 h/s XMR with sgminer
... or 29.8 mh/s ETH with claymore

XFX RX 470 4GB Elpida with eliovp's strap that's around the forum for long time with equal TRCDR/A fix, I make around 850h/s with claymore xmr 10.2 , and about 920h/s with gateless gate at 1170core/2000mem/875mv , at about 2-3-4 errors per hour. With claymore xmr 10.2 hashrate is stable with rare low fluctuations to 800-820 , with gateless gate 0.1.3-pre6b fluctuations are a bit more , but averages at about 920-925 , new gateless gate sharp gives me almost the same results , old gateless gate is based on sgminer , so hashrate is about the same as sgminer, for me a little bit more than sgminer-5.5.5-gm-nicehash-8.

edit: With the same strap, same 1170/2000/875 on ETH make 29.5mhs , eth and xmr are stable with these settings , memory can go up to 2050 before significant error rate , but stability goes down with it. Claymore xmr 10.2 settings -h 928 , gateless gate settings 896/8/2 , claymore eth 10.2 -dcri 8

Everyone got used to modify straps and complain about stability...its not only timings that matter. Use your brain and HxD

Guys could you please confirm if there are special custom strap for ETN. I mean:

optimal timing for ETH will be different than for cryptonight (ETH)?

I got different gpus with different kind of memories, on ETC/ETH almost all of them going above 30 mhs. But with ETN highest is 770 and in same cases not even 700 (same strap).

Possible gigabyte or msi GPU. Just use older bios revisions or replace by hand. Done that with latest gigabyte shitty revisions, replaced entire VRAM_Info table. I'll give you another hint about gigabytes g1 gaming bios rev. F80,F90 -> they are not with IR compat VRM like written in VOI table.

Use gatelessgate (older version or a stable from Sharp releases) and set RI 896 W 8 Threads: 2 my 3x 580 4gb Aorus Hynix fly on these settings. 925 H/s with 1150/1175 Core 925 mv (950 for main gpu) errorless memory of (2090, 2175,2200) the 2200 one does 975 h/s

Also my rx 570 elpida/ 570 MSI gaming (hynix brand new, barely hits 2050mhz memory) both are within 840 h/s
Claymore is WAY lower. and Zawawa's miner is really advanced. i have some Hawaii cards that are taking my time though to fiddle with 9too hot here) so i didn't do more undervolting.

Have questions to the folks here.
Nerdralph, i reallly like you man and like your tool. Surely Wolf too and many others!
I have many questions though, i hope you can answer
Why Hawaii in general although having Loads of compute cores (40,44) and a massive memory bandwidth +even the 390/x one is hynix AJR. STILL lacks as hell in Cryptonight? Both GG/SGminer &XMR stak have not a SINGLE raw intensity that gives any meaningful speed! also, I can't even fill the memory on the 390! 1280 RI X2 threads never works well. i tried even 3 threads with 640 RI loads of combos never really worked!
The Hynix AJR is a modern memory (same as polaris!?)
Only Claymore which i beleve injects work in chunks somehow, gives me 870 h/s at stock R9 390 1040mhz/1500 when i change to -h 928 instead of 1280, -dmem 1 (which takes much less memory!) speed increases!

I'm about to use Nerdralph tool to edit all the 1000-1500 straps and see which gives highest speed without errors
OR, should i just loosen the 1625 straps and above(take a higher strap and nerdify it, cause the memory starts to give errors at 1625 stock) so i can overclock the memory to lets say 1750 mhz? because with claymore, even at 1040mhz, memory overclock gives a noticeable boost.

thanks in advance for any help.

which card is used to get 930 amd or nvidia