Quote from: MisterMelancholy on April 19, 2013, 04:28:59 PM

Quote from: DrG on April 19, 2013, 09:05:53 AM

You're getting 2 7970s inside a case to run at 1180 and you're complaining?

I didn't realize 1180 was so good, even with the temps. My main reason for complaining is that under-clocking the memory, even to less than 10% of the stock clock, does absolutely nothing for the power usage and temperature. It's very frustrating, and I'm sure that other 7970s don't do this, while still getting the same hash rates.

Quote from: MisterMelancholy on April 21, 2013, 02:44:47 AM

Quote from: grue on April 20, 2013, 10:57:27 PM

you do realize that for bitcoin mining, you're supposed to downclock memory A LOT, right? not sure how it is with 7000 series but I can downclock my 5850 from 1000 to 300 with hash rate increase!

Yes, I've under-clocked my memory from 1500Mhz to 110Mhz. The problem is that this doesn't allow me to further OC my core clock, nor does it decrease power usage or temperatures.

EDIT: Update on my temps. After letting it run for a few hours, my temps are about 92C/78C Not sure what I can do to reduce these. I might have to resort to water cooling.

Ya 1180 isn't bad at all! What program are you using to underclock the memory? CGMiner won't work with the 1180/110 setting, but will think it does. Try using a 3rd party program like GPU-z and watch the sensors tab to see the actual mem speed, not the reported mem speed. Yes, they can be different. You also won't notice a huge difference with the 1100 setting. Try using MSI AB to set it to something around 375-410.

Quote from: Amph on April 20, 2013, 07:43:01 AM

Quote from: MisterMelancholy on April 20, 2013, 01:41:30 AM

Quote from: Amph on April 19, 2013, 06:13:34 PM

you talk about windforcce 3?

Yes.

really strange, i know for fact that the windforce 3 is very good in temp

Quote from: Bitsaurus on April 20, 2013, 11:08:29 AM

Windforce is only cool if it can get fresh air

Ya mine actually ran cooler when I took the side of my Antec 300 off. I didn't like the dust, so I put it back on, and had the fan by the GPU blowing out, not in.

Quote from: MisterMelancholy on April 20, 2013, 05:11:00 PM

Quote from: FloridaBear on April 20, 2013, 03:35:38 AM

Depending on the manufacturer, you may be able to load different firmware on the card. My Gigabyte Windforce GHz edition 7970 came with a stock voltage of 1.25V; with their "standard" firmware (instead of "GHz"), that went down to 1.17V which has helped with temps and actually gets me better hash rate since I use auto core clock control in cgminer to maintain constant temp.

This is a grand idea. I'll do some research and see how this is done on Linux. I'll post back later with my results.

I would NOT recommend messing with the BIOS. I tried to flash a voltage unlocked BIOS, and now my card won't be recognized by any of the AMD drivers, and I can't mine. I had to shut down the computer, flip the Dual-BIOS switch, and it's been running on the backup read-only BIOS for ~6 months now, no issues. Even with this backup BIOS, it's still voltage-unlocked, but it just takes a LOT of mucking around in MSI AB to get it working.

I'm on Win8x64, 13.1 (and included SDK), CGMiner 2.11.0, E:1200 M:1050 F:90% and ~72C for a constant 722MH/s per card. I've had great luck with this card! It is eventually possible to undervolt, but you gotta mess with it. At this point, it's more profitable to max your overclock, and not worry about undervolting, so that part kinda doesn't matter as much. The Triforce cooler keeps the Core Engine temp pretty low, but leaves a bit to be desired with the VRM cooling, especially with the higher-than-normal stock voltage, and the itty bitty heatsink on them. I run the fan at higher speeds for the VRM cooling, regardless of the Core temps.

All in all I love these cards, so idk why you would hate them so.