Greetings, folks. Here's what I've got... Athlon 64 FX-57 ASUS A8N-SLI Premium (current BIOS 1007.002 BETA) 2x OCZ EL DDR400 PC3200 Platinum Dual Channel 2gb (2x 1GB) 2x BFG nVidia 7800 GTX OC 2x WD Raptor 74GB in RAID 0 (nVidia RAID) Plextor 716AL DVD Audigy 2Zs Platinum Windows XP (sp2) So, I'm having a couple of interesting issues. First and foremost, the MB will not POST with 4 sticks of memory, either with the (non-QVL) OCZ 1GB sticks or the (QVL) Corsair Value Select 512MB sticks. I relaxed the memory timings with two sticks to 3-4-4-8, (2T) and still no POST with 4 sticks. -> tried popping the CMOS battery and resetting it, starting with 2 sticks working up to 4. -> tried 1 to 3 sticks with no problem. -> tried manually setting memeory timings, both tight and relaxed. -> tried 2 kinds of memory -> tried BIOS version 1005, and BETA 1007.002 The second problem is that I can't get the nVidia Control Panel to give me the SLI option. I spent a couple hours with a BFG tech support guy, and we tried just about everything. I stripped out everything from the system, installed one card at a time, set the BIOS to Single Card, installed the second card, set the BIOS to Dual Card... nothing. Device manager recognizes two 7800s, but SLI section of the display control panel indicates that I need to uninstall the "non-compatible" GPU before activating SLI. I'm currently using 6.66 nForce drivers and 77.72 Forceware drivers. As a precaution, I have ordered the following as backup... + MSI K8N Neo4 Platinum SLI Socket 939 NVIDIA nForce4 SLI + DFI LANPARTY UT nF4 SLI-DR Socket 939 NVIDIA nForce4 SLI + OCZ EL Platinum Revision 2 1GB (2 x 512MB) 184-Pin DDR SDRAM DDR 400 I am taking no effing prisoners. >_< Thoughts? Ideas? Eldon ps. I'll be water cooling the rig in a modded Lian-li after I sort out the HW issues (BIX, DD blocks, aquacomputer pump and controller). bwee!