ragingazn, try this that I suggested in your PM:

http://www.sendspace.com/file/r7jys0

You will need to restart after it finishes.

you delete the 2 file in the profile folder?

Did you read all the way down on that thread? https://bitcointalk.org/index.php?topic=103636.msg1137780#msg1137780

First, I'd update to 12.8.

Second, CGMiner can only clock the memory 150MH/s below whatever the core is running at. My 7970 runs at a core:1180, so CGMiner can only clock the mem to 1030.

However, MSI AB can be tweaked to lower your memory to whatever you want. You need MSI AB 2.2.3, but you need a DLL file from 2.2.1. See this thread for more information. I run my 7970 at core:1189 and mem:375. I could go lower, but I lose hashrate if I go to low on the mem.

When asking these questions, you need to give a little more information. What cards? OS? driver?

Do you pay for electricity in your dorm?

I'm talking about the minimum memory clock that 7970 cards enforce, which is 150MHz less than current core clock. If you really found a way to get around that limitation with just cgminer, I'm sure many would be interested in how you did it. But it's more likely that you just think you are running at 300MHz memclock, while in reality the card picked something much higher when you requested it.

AFAIK, getting around this limitation is only possible with some Windows software that use the cards in undocumented ways. For example MSI Afterburner and Sapphire Trixx (both happen to be made by card manufacturers).

Attempting to downclock 7970 memory to 300 with cgminer is almost guaranteed to not work. Try setting it to 775, and see if the temps drop a little.

Fully understanding DGM is a tough task, but the main points are that it's fair, no hopping possible, and it usually has less variance than PPLNS (which is also fair, and easier to understand).

What program are you using to undervolt/underclock?