Re: Custom RAM Timings for GPU's with GDDR5 - DOWNLOAD LINKS - UPDATED
Quote from: Larvitar
Is tCKE linked with SEQ_MISC1?
Nice hash from damaged elpidas
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.Nice hash from damaged elpidas
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.
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.
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)
