Re: Claymore's ZCash/BTG AMD GPU Miner v12.6 (Windows/Linux)

Hi guys!

I've come across a weird issue. I have MSI H270 PC mate MB, R270x card, Windows 10, no overclocking. And I updated MB BIOS yesterday. Since that I'm getting "ZecMiner64.exe has stopped working" right after start. Log contains only (even with debug option on):

12:02:19:594 b80 ZEC: 1 pool is specified
12:02:19:595 b80 Main ZCash pool is eu1-zcash.flypool.org:3333

I've used AMD uninstall utility and reinstalled recommended 15.12 driver - no luck.
Can someone help me to overcome this issue? Thank you.

A couple of things: Post your config so we can check if it's OK, it could be something simple. Run Claymore in a DOS box this will let you see all reported errors and can point you in the right direction to fix the problem.

I have had errors like "ZecMiner64.exe has stopped working" and the only way I could fix it was to reinstall Windows 10 Sad

I have an R9 270x 4MB card and it runs Claymore's Zcash miner OK, here is the configuration I used:

Code:

setx GPU_FORCE_64BIT_PTR 1
setx GPU_MAX_HEAP_SIZE 100
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_SINGLE_ALLOC_PERCENT 100

ZecMiner64.exe -zpool ssl://us-east.equihash-hub.miningpoolhub.com:20570 -zwal UserName.WorkerName -zpsw x -i 7 -a 0

Someone has info about R9 270 (no x)?
Now i have about 170h/s in 940 core and 1400 mem. GPUs moded only in cover, because i dont know how to change timings (elpida and hynix).

As far as I know, and I have Googled hard, there is no programme (such as Polaris Bios Editor) to modify the memory straps on an R9 270 ('x' or 'no x').
I did modify the memory timings an R9 270x using a hex editor but it made no noticable difference to the hashrate.

If you want to try and hex edit your GPU BIOS this here is the link on how to do it..
https://anorak.tech/t/anoraks-amd-vbios-hex-modification-tutorial/126