Quote from: Eliovp on June 05, 2016, 06:50:27 PM

Quote from: citronick on June 04, 2016, 06:19:39 PM

Quote from: citronick on June 04, 2016, 07:32:39 AM

Using -150mV rom mod on Sapphire R9 Nano
Results: Clocks:800core/300mem, 657watts, 2.67Amps, 132.5 MHs, temps=59-61c, fans=19% (mining ETH mode, CDM 4.5)
Current system: Win8.1, Cat-16.5.3, ASrock H81-BTC, 1840 Celeron, 8GB RAM, 120Gb SSD, USB3 Powered Risers, EVGA1600

Notes:
1. Big saving$ on PSU - now can replace it with smaller PSU.
2. Cranking up to core clock to 1040mhz/300Mhz memclock, gets to about 176MHs but wattage and amps will increase too 1348w and 5.4amps. Temps will also rise to 76-77c and fans 49%

Next project 2nd attempt on -175mV rom mod.
It worked well on 1 x Nano (see my previous post)
When I got all 6 on same rom mod, I had issues bringing up safe mode to apply DDU. I may have given up too soon. Will try and get this going after I see how stable the -150mV rom mod runs after a few hours mining ETH only with latest CDM 4.5

UPDATE:
1. Looks like -200mV is not for me.... after flashing, power off, DDU etc.... installation of of Catalyst 15.12 or latest 16.x.x hung halfway at 12%. Rebooted cold or reset, blank screen.
2. well.... the -175mV rom did not go well too.... after reflashing, DDU, install of Catalyst latest drivers... Launching CDM goes silent after identifying the Nanos. Tried qtminer, also no luck.
3. Decided that -150mV is probably best mod for now until Heliox gives a few more ideas on how to fix issues above.

Citronick,

I have 3 or 4 cards that have been stable with the -200mV since i released it. the others gave up after a while as well tbh.
For now i have 3 cards that are running the -150mV as they kept failing after a while as well. All the others (90pcs) are running with the -175mV rom and are stable for over a month now. A few rigs even longer, 40+days non stop.

I can't explain why some seem to have so much issues with the "tough" roms as it all goes smoothly over here. Maybe it's because i have an early batch? Dunno..

Quote from: Crypto84 on June 05, 2016, 06:20:52 PM

What hashrate do you get with this rom?

Currently running @ 1220 core clock @ around 35-36Mh/s. 1260 gives me 39 but temperatures rise to 85degrees because it's getting hotter every day here.

greetings!

A few more Nanos coming in today - so I will try again the elusive -175 and -200 mods - it could be batch issues - will let you know results. The -175 mods is really the one that I would like to have for these Nanos.

Btw, do you have the link for the 390 rom mod? Will it work on MSI-R9-390?