Quote from: heavyarms1912 on August 01, 2018, 01:20:37 PM

Quote from: Larvitar on August 01, 2018, 12:19:55 PM

Quote from: QuirkSilver on July 31, 2018, 09:45:38 PM

Quote from: Larvitar

Is tCKE linked with SEQ_MISC1?

Nice hash from damaged elpidas Grin

About my lastest tests:
- No matter what I do with straps, at 1950+ I have incorrect ETH shares or compute errors in CN mining). 1930 is fine;
- Tried SEQ-MISQ1 and CAS from 1500 strap. Mining doesn't starts, bsod after closing miner.
- Tried tFAW32 bumped to 6. 12H/s loss. Sticking at 4.

regarding tcke, not exactly sure, but 90% it is indirectly dont forget there are other Misc lines not shown. What works though and confirmed by wolf (or thanks to wolf) tCL can tolerate +1 extra difference over the corresponding MISC-1 value. Also, you can change r2w and w2r freely for stability, that makes rules much different and easier, found a 1kh/s hynix (based on 1500 mhz strap though) with this way stable on hynix, non cooled at 2125 (few errors) this card used to do loads of errors @ 2025 mhz! and give 912 h/s with one click.
for Deep diving though need to mod a 1625 or 1750 since base tCL is 19, thus 20 when you +1
If your elpida crashes at 1950 with whatever timings, that's similar to mine, whether solder/bga issue or power problems.

Now i fully understand the MR0 ,MR8 etc but the DAMN Binary bits relation to the 4 Hex characters! omg.

I think finally I reached my goal.

My memories are not Elpida, but Micron (not Micron-Elpida). BGA are not a problem, the ex-owner has 4 another cards the same model, and all are bad for memory overclock.

I changed MISC8 to 1500 base, lowered TRP_WRA a little and bumped tRP. To improve hashrate, I did RASMACT fine tuning (yeah, the "trial and error" way). Nice results. For now, 971H/s at 1200/1900. I think we have a "mission complete" for Micron, better than expected results, with much knowledge that can be used to improve Elpida and Samsung.

Elpida RX570 4GB is runing at 1200/2020. 985H/s. I think there is room for improvement over 1KH/s. Maybe getting closer to Samsung (at least in v7) Cheesy

1250 core should bump it over 1k.

Yes, but my RX570 is bad for core OC. At 1250 it needs around 975mv. Power consumption rose greatly. 1150~1200 often is the sweet spot. In opposite, my RX580 8GB Samsung runs at 1310 with 940mv rock solid <3

in addition, is good to improve by memory optimisation because when OC'ing core the performance gains will be greater