Hello, This is my first post but I have followed this thread for a long time. I was previously hitting fsb wall at 360 with my Dual core Conroe E6600 (2.4 Gig) processor.

Following a recommended setting by Tomcug:

CPU Frequency: 400MHz
DRAM Frequency: 800MHz
Performance Mode: Auto
PCI Express Frequency: 100MHz
PCI Clock Synchronization Mode: 33.33MHz
Memory Voltage: 2V
CPU VCore Voltage: Auto
FSB Termination Voltage: 1.3V
MCH Chipset Voltage: 1.65V
ICH Chipset Voltage: 1.05V

I was able to hit 400 mhz bus with cpu core voltage in the 1.6 volt range, however system was not prime 95 stable. I tried higher voltage since my processor was conroe class vs. the penryn in Tomcug's above recommendation. I was unsure how high to push my cpu voltage (maybe higher voltage would make System Prime 95 stable?).

I then thought possibly bios upgrade would help, so I switched from bios version 1707 to version 2801

Now that I am running Bios 2801, I find that I don't know how to adjust the CPU Vcore. I can not change the setting manually- it is stuck on Auto. A note recommends disabling C1E and EIST to be able to adjust CPU VCore

I have Disabled Enhanced C1 Control and Disabled Virtualization Technology.

How do I disable EIST? Are there other settings in this bios version that might be preventing me from adjusting the CPU Vcore.

Also, what are considered safe Vcore ranges for my Conroe class dual core cpu. Any other recommendations for a Stable 400MHZ fsb?

Finally, how do I know what the revision # (1.04g -1.02g) my motherboard is- I might wish to upgrade my cpu to penryn.

Thanks in advance for any support that you can provide- Paul