i have used bios 2101 of asus.

main P5Q-E.

i have 8gb ram (4x2gb) gskill. F2-8000CL5-2GBPQ...

i can not run all 8gb on my system. because prime95 always fail.

but i run 4gb ram, it works well...

how can i run all 8gb on system...

thanks