My CPU: AMD Phenom II X2 550 Black Edition -> -> AMD Phenom II X4 B55
MB: Asus M4A88TD-V EVO/USB3

My result:




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my phenom II x2 555BE unlock result. So far stable.




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[quote=prestigio,Apr 5 2011, 07:03 PM]
WHICH MOBO??

Asus M4A88TD-V EVO/USB3
Very nice piece of board!

This post has been edited by egorain: Apr 5 2011, 07:14 PM

Mine just drop down to 3.8ghz for stability although 4.0 is through stress test.

My board : M4A88TD-V EVO/USB3
CPU : Phenom II x 2 555 BE
OS : Window 7 Ultimate 64bit






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Some tips for tweaking performance for dual core or quad core cpu at Window 7;
*Using MSCONFIG:
(1) Go to the “Start Menu“, type “MSCONFIG ” in the search box and press Enter. The Windows system configuration tool will start. It might ask you for Administrator password before continue.
(2) Click the “Boot” (2nd) tab
(3) Click “Advanced Options” button
(4) Select the number of processors you have and the amount of memory available. For example, if you’re using a Dual Core processor then you should select “2″ from processors drop down menu, if you have a Quad Core processor, you should select “4″ from the processor drop down menu, etc.
(5) Select your numbers of memory ram also '4gb' (4096) or '8gb' (8192) etc.
(6) Now Press “Ok“, then “Apply“, MSCONFIG might ask you to re-boot your computer.







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It appeared your core speed & multiplier not showing the accurate figures, if you're unlock the core successfully, it shd be showing 3.2mhz at core speed, and x16 at multiplier, according to your cpu_z, it might cause your pro unstable, don't think about the ram speed first, you might turn of the core unlock feature first and restart enter window play some games, if it shows normal and no sudden happening, that means your pro core is not stable to unlock, bless for it now.

Somehow I think your mobo gigabyte ga-770t-d3L's chipset is not good at unlock cores, it's only hv 4+1 phase VRM, not 8+2 one, may be you have to update newest bios & try again....