I've had rigs run for days or even weeks and then out of nowhere behave like that. Unplug all your sata cables from the psu and see if any of them are damaged/melted.

Hi everyone, I hate to ask this question when it could be resolved with plain old trial and error, but it is extremely hot in the building where my rigs are kept and the last time I went out there for maintenance I was nearly roasted alive.

I have 6 card rigs with modded bios 480's/470's; win10 64; 16.9.2 drivers; watttool 0.92; and claymore 9.3
I want to use the latest AMD blockchain driver, and claymore 9.8 but I've read mixed reports of whether or not clock/voltage control is possible. Some have said watttool works now, others said that it looks like it works but doesn't actually change clocks/voltages. Folks are saying the same thing about the latest beta release of Afterburner (It works; It doesn't work; It looks it works but doesnt actually change anything...etc).

Can anyone with a similar setup please confirm that clock/voltage control is possible, and do I need pixel patcher for modded cards?

Thanks!

By "all" of the 480's I meant the msi 4gb ref ones that I mentioned earlier, I use the 1750memstrap on the 8gb cards, and they do use more power but get a higher hashrate. Of course, clockspeed also has a impact on power consumption. The msi 470 4gb gaming x can handle mid to lower 800mV for the clock speeds I use. I don't have 470nitros but I do have 8gb 480Nitros and they required a lot of voltage tweaking since by default they have a +25mV offset if you check them with watttool.

I think many people have problems because of too high clockspeeds and too much voltage

I can't believe people are having trouble with msi cards and hynix memory! First of all, with the 4gb hynix cards use the 1500memstraps! Second, lower the gpu speed (1095-1191mhz range). Finally, start with a voltage offset of at least -14 in watttool. You should be able to set the mem to 1900mhz, but you may have to lower the p7 mem/gpu voltages even further. I'm getting 27/730 eth/dcr hashrate with 9.3 -dcri27 on a 4gb 470 msi gaming x. My msi ref 480's 4gb with hynix mem have the memclock at 2000 with everything else the same and the hashrate is ~28.6/800 eth/dcr. According to kill-a-watt all of the 480's use <100w for dual mining, and all the 470's <90w. I've got dozens of polaris cards and for me msi is the best for mining!

would it be beneficial at all to the ethereum network for me to run nodes on all my rigs, or would it be a waste of power?