I am wondering how you get the lower memory to work.... every time I try to decrease the memory in WINDOWS machines the AMD CCC app freaks out and puts the video cards to their default memory settings refusing to let me change it anymore. unless I use TRIXX but after using Trixx for awhile the AMD CCC App gets totally lost as to what the card is doing.
Like presently one machine that I was using Trixx on the AMD CCC app has no idea what the fan speed and temp of the card is anymore it doesnt display it. on another one it display them but has wrong value. another one I completely removed all amd drivers because the Trixx utility and the amd ccc app wouldnt control the card anymore...
CGminer... --gpu-memclock setting. And it is not 150 but 300. I was looking at the wrong one(5970 black edition)... It also do 390 per core... So 780 total

Undervolt to 1.00 since I can't get more out of it at stock voltage. No idea why but driver crashes... And for some reason the second core can be turned on only if it is above 55C. If below it crashes the driver... If anyone has idea why please let me know.
so command line cgminer lets you adjust the GPU and memclock? sigh wish I knew this over a month ago!