Alright, so I recently completed my inexpensive HTPC build a couple days ago (minus possibly a better Video card and I think I want to go with the Xonar D1, but irrelevant for now). The specs are as follows:
Biostar TA785G3
Sempron 140
2GB G Skill 1333 CL8
Samsung Spinpoint F3 1TB
Rosewill 400W
Lite-On Blu Ray Drive
Antec Veris (love this case)
After installing Windows 7, drivers, software, etc. I immediately tried unlocking the Sempron which was a success. It was even stable unlocked and overclocked to 3Ghz without any change in core voltage. I stopped playing there to focus on an aggravating access time issue with my HD. I happened to notice very poor access times from my Samsung 1TB F3. After several HD Tune tests I've concluded its averaging around 20ms which is atrocious. I know the drive is fine as I had it in another computer until now and the access times were around 12ms. Sustained reads and writes are roughly on par with average of ~100MB read, peakin at 145MB or so.Immediately I started pointing fingers at the SATA controller/Chipset, so I decided to update my BIOS in hopes there would be some performance gains.
So I updated my BIOS with the latest one from Biostar and disregarded backing up my original one. MAN did I make a big mistake.
Once I flashed the BIOS I lost my ACC function. Apparently Biostar removed it from showing in all their BIOSes. I tried all 3 BIOSes they have hosted for my board and NONE of them have ACC listed under the CPU feature. Now Biostar has 4+ revisions of the exact same board, 6.0-6.3. Now According to Biostar, ONLY the 6.3 Rev will unlock cores with ACC. However, I CLEARLY have the 6.0 Rev board AND successfully unlocked my Sempron with my original BIOS. Its obvious my board had a separate BIOS other than the 3 listed on their site to download.
The BIOS should look like this:
Biostar's page about the ACC:
http://www.biostar-usa.com/app/en-us...g/features.htm
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