Gigabyte EX58-UD5/Extreme Discussion Thread

[rge]

With F4 i got probs get in windows at 190 bclk, more vcore also no change it.
Maybe it's my 12 Gb dont know, for now i stay with F3 200x21 all enabled, memory 8-8-8-20 T1

You know since you said that, I had to try F4 again. And you are right. F4 works fine on auto settings, rebooted 3x without issue. I need to actually boot up at everything auto before complaining about stock.

I made changes 1 at a time. It is bclk that causes problem. At 170 bclk reboots fine into windows. 180 bclk, will not reboot, have to do a hard restart. Also at 180 cant save bios and get into windows until doing a hard restart. 180 bclk would work providing you are always willing to shut computer completely off everytime you need to reboot, ie only hard reboots. Back to 170 bclk, and reboots without issue, no need to do hard restart. This is similar problem that occurred on my P35 DQ6 that was solved by messing around with pcie volts/clock. Have locked 100, but no help.

Just could not imagine a bios being released where stock did not work, but apparently just any bclk ~180 and above that does not work correctly.

EDIT: the only fix for bclk of 180 and above on F4 final bios seems to be upgrading to F4j bios. I tried altering cpu/pcie clock drive, pcie mhz up and down, pcie volts, all other voltages including vcore/qpi/vtt/mem, and mem and uncore down to r/o mem, but F4 and 180+ bclk just can not get to reboot, hard boot to windows only, and if go to bios then save, have to shutdown pc manually or occasionally do clear cmos to get back.