There Should Be A Setting In Your Bios To Enable The "Sli Ready" Or "EPP" Memory Option.
You Did Not Mention Which Specific 790I Board You Have, But They Are All Similiar.
If You Have The XFX Or EVGA 790I Ultra, There Are A Few Different Ways This Can Be Set-Up. Here Are Two Of Them.
1. Memory settings:
set epp / sli ready to auto.
set fsb mem ratio to auto.
set timings to optimal.
2. set epp / sli ready to expert.
set fsb mem ratio to **unlinked**.
enter in the mem frequency manually (2000) or whatever yours is rated to.
set timing to expert at 9-9-9-24 2T or whatever your dimms are rated at.
Leave All Of The Other Memory Setting To Auto.
I Prefer The Second Group.
If You Are Relitively New To The 790I Board These Settings May Help You With Initial Set-Up.
CPU Voltage Need To Be Set At A Minimum Of The VID (core temp will tell you the vid and stepping of your processor). I always Set Mine Up Above The Vid Due To Vdroop and Stability Issues.
DDR Voltage Set It To The Rated Voltage Of Your Memory.
SPP 1.4V Minimum With 4gb Memory (2x2) at 1600-2000mhz
MCP 1.55V (up to 1.65vmax) with two or more video cards
FSB 1.25V (no higher than 1.4 for 65nm cpu or 1.3 for 45nm cpu)
PCIE slots 1,2,3 at 100mhz
mch at 200MHZ
all Gtl ref voltages +05mv
disable all spread spectrums
disable all cpu features except execute disable bit and maybe virtualization technology unless you have a program that uses it.
These Settings Should Keep You From The Freezing / Lock-up Issues.
If you Are Planning Any Overclocks, Make Sure You Have One Of the Latest Bios Updates Flashed. (Not Neccessarily The Newest, Just Something Better Than "Out Of The Box"). Some Of The 790I Boards Had Terrible Data Corruption Issues With Older Bios Revisions.
Last edited by Lord_Hades; 04-06-2009 at 05:09 AM.
EVGA 790I ULTRA SLI 132-CK-NF79-A1 (P07)
QX9650 With Tuniq Tower
Antec 900 Case
4gb Patriot ddr3 2000mhz 9-9-9-24 2T
3Way Sli GTX260 OCV2
2 Raid O Seagate Sata II 640GB HD's