First time mismatched 6x1GB triple channel. Still manages to accomodate my push 120x38mm thick Scythe UltraKaze 2000rpm fan with memory module installed in dimm slot 1

System specs

• Intel Core i7 920 3836A756
• Thermalright Ultra 120 Extreme + LGA1366 Bolt Thru kit + 2x 120x38mm Scythe UltraKaze 2000rpm 87cfm fans in push/pull
• DFI LP UT X58-T3EH8 R.A51 - 01/23 beta bios
• 128MB Gainward FX5200 PCI
• Ram cooling: 3x 60x25mm Sunon 23.5cfm Maglev fans
• 80GB Hitachi 7K80 SATAII
• Pioneer DVD-RW
• 1KW Corsair HX1000 psu
• WinXP Pro SP3 full nLite updated hotfixes / Windows 7 beta dual boot

Memory configuration:

• Dimm slot #1: 1GB G.Skill PC3-12800HZ (Samsung HCF0)
• Dimm slot #2: 1GB Corsair DDR3-2133C9DF Dominator (Samsung HCF0)
• Dimm slot #3: 1GB Cellshock PC3-14400 (Micron D9GTR)
• Dimm slot #4: 1GB Corsair DDR3-2133C9DF Dominator (Samsung HCF0)
• Dimm slot #5: 1GB Cellshock PC3-14400 (Micron D9GTR)
• Dimm slot #6: 1GB G.Skill PC3-12800HZ (Samsung HCF0)

Seems with 6x1GB AUTO CMD rate = 2T, so for 1T you need to change CMD rate from AUTO to 1T (1N).

Bumped vdimm straight to 1.830v in bios and clocked 6x1GB straight up to DDR3-1606Mhz 8-8-8-24 1T to see how it runs. Everest latency speeds seem to get slower as you add more modules. So in terms of fastest everest latency the order goes = 2x1GB > 3x1GB > 6x1GB. Still 32M time with 6x1GB DDR3-1606Mhz 8-8-8-24 1T is pretty decent.

6x1GB @DDR3-1606Mhz 8-8-8-24 1T at 1.830v bios (DMM measured 1.835v real)