3 days ago I've send mail to GigaByte support with detail explanation what is going on on mine friends computer in combination GigaByte GA-945GZM-S2 rev. 6.6 & Intel Pentium Dual-Core E6600. Today they send me an answer, but obviously that they miss the point.
Here is answer send by GigaByte support:
"...Dear Igor Precep
Thank you for your kindly mail and inquiry. According to specification, GA-945GZM-S2(rev. 6.6) support E6600 CPU at FSB 800 , It does not support E6600 running at 3.06GHz by any BIOS update. It's chipset hardware limitation. Please refer to CPU support status at
http://www.gigabyte.us/support-downloads...x?pid=2467
If you still have any further question or suggestion about our products/service, please do not hesitate to contact us. We will try our best to help you resolve the problem ASAP.
Regards,
GIGABYTE TECHNOLOGY..."
...and to correct them today I've send them next message with even more detailed explanation of problem:
"...About the previous answer... Link that you send me (
http://www.gigabyte.us/support-downloads...x?pid=2467) is for the PCB revision 3.x of motherboard GigaByte GA-945GZM-S2, but my friends motherboard is revision 6.6 and here is link for CPU supported by 6.6 PCB revision of thet board:
http://www.gigabyte.com/support-download...x?pid=2603 As you can se there are some noticable diferences between 3.x and 6.6 revisions, and 6.6 revision can stabile work with FSB 1066, example with Core 2 Duo E6300, C2D E6320, C2D E6400, C2D E6420, C2D 6600, C2D 6700 and Core 2 Extreme X6800 and in most cases TDP of those processors is greater than TDP of Pentium Dual-Core E6600. I think that in my friends case main problem is in old CPU Microcode in F2 BIOS of GigaByte GA-945GZM-S2 rev.6.6 motherboard so motherboard can't properly recognize the CPU and because of that he runs CPU with CPU multiplier set to (minimal) safe value 6X (and FSB 1066!!!) and CPU frequency is because of that 1.6GHz (6x 266) instead od 3.06GHz (11.5x 266). If there is newer BIOS than version F2 with updated CPU Microcode (or just slightly modified F2 BIOS with only updated CPU microcode) I'm sure that GigaByte GA-945GZM-S2 rev.6.6 will properly work with Pentium Dual-Core E6600 on FSB 1066 and 3.06GHz (11.5 x 266). So, I (again) repeat what is currently going on in combination GigaByte GA-945GZM-S2 rev.6.6 (BIOS F2) with Pentium Dual-Core E6600: CPU is (automaticaly set by motherboard) runing on 1.6GHz (6X 266, FSB 1066) and there is no option to manualy (even with all options in BIOS "unlocked" with CTRL + F1) set CPU multiplier to CPU's default 11.5X. So I sugest you to do next: let some of your BIOS programmers update CPU Microcode on existing F2 BIOS and then send that BIOS to me by mail and I will test (flash) that modified F2 BIOS on my risk on mine friends motherboard GigaByte GA-945GZM-S2 rev.6.6. After that I'll give you a feedback by mail what was the result. I think that updating a CPU Microcode is no big problem for GigaByte's BIOS programmers. Here is link for F2 BIOS:
http://download.gigabyte.asia/FileList/B...6.6_f2.exe..."
Still I'm planing to go to my friends house to try to temporary solve the problem with locked CPU multiplayer (6X instead od 11.5X) with GigaByte Easy Tune5 Pro v.B7.1221.1 but I doubt it will help. If someone could update CPU microcode on F2 BIOS on motherboard GigaByte GA-945GZM-S2 rev.6.6 I would be very grateful.
I'm asking muself past 4 od 5 days "...man, why you are wasting your time with PC rig that's not even yours?...", but that's what frends are for...