The GA-8IHXP does NOT lock pci/agp, as my last board (Abit TH7II) did for example.
The Utility, EasyTune4, that can be run with this board is a great OC utility, but does not fully support this board yet. It's supposed to eventually & would have that lock function.
Meanwhile, checkout other Gigabyte 8IHXP posts in this Forum, you'll get much info. It's turning out to be a very solid performer.
For those thinking about the rambus Gigabyte alternative, until something better arrives...
Here is info on my GA-8IHXP setup. Bios used is F4.
Latest 3DMark Score 13798 3D marks:
myurl
GA-8IHXP, 2.53@fsb150, 2X256MB Kingston 1066-32 rdram, set at 4X (1066 selected), AIR cool, Zalman6500B-CU, vcore1.7, agpV1.8, over-rimm enabled. Bios menu settings sufficient for now, until ET4 Final.
Leadtek GF4600-325/700, Nvidia-30.82-official drvs. Don't use EasyTune, it's not (supported) ready yet.
D3D-vsync off, High perf.; openGL-vsync off
Sys: 4 scsi hdds, dvd-rom, cd-rw.
This Gigabyte board is very stable & solid at fsb150, with this setup, but will OC up to fsb156. Apps & Games run no problems. Still waiting for the real 16bit Samsung 1066-32 rdram, which should improve matters. The setup has been running for several weeks, although GF4 card is not OCed at all times. About to add more cool to Leadtek-HS with small backside fan. Still testing some Bios settings for optimum.
Latest PCMark2002, using identical setup:
CPU Score 7019
Memory Score 7206
HDD Score 961
myurl