When you overclock a CPU with a locked multiplier, you are messing with the bclk. The memory is also referenced from the bclk. Lets say you go to a bclk of 200 (stock is 133). Then, the memory multiplier that used to give 1333 will now give 2000, the multiplier that gave 1066 will give 1600, and so forth.
So if you want to use cheap RAM, you want to use the lowest memory multiplier available. Unfortunately the memory mutipliers for i7 dont go low enough to use value DDR3, with a substantial overclock.
This is extremely unfortunate because for the most part, there is little real world gain in running your RAM at extreme speeds. Overclocking an i7 920 to 4ghz while keeping RAM around 1066 would offer overclockers a cheap solution. Alas, you'd need to pony up for some half decent sticks.
OCZ Gold 240-Pin DDR3 SDRAM DDR3 1600 I have 12 gigs and love it worked right out of the on vista 64 the only trouble i have is getting ubuntu ue 2.2 to see all 12 gigs. I paid 200.00 for the set cant beat it
the i7 and x58 systems will change your timings and clock to be in proper multiplier with your processor etc. to get your ram running at 1600 mhz expect to clock your i7 to 4.0. you will also have to manually set your timings in the bios.
Intel Core i7 920 Nehalem 2.66GHz Quad-Core Processor
ASUS P6T Deluxe V2 LGA 1366 Intel X58 ATX Intel Motherboard
POWERCOLOR AX4870X2 Radeon HD 4870 X2 2GB 512-bit GDDR5
Thermaltake ArmorPlus VH6000BWS Black Full Tower Case
OCZ Gold 12GB (6 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600
COOLER MASTER V8 CPU Cooler
RAIDMAX HYBRID 2 RX-730SS 730W
Western Digital Caviar Black 1TB 7200 RPM SATA Hard Drive
Ubuntu Ultimate Edition 2.2 64 Bit
Microsoft Windows Vista Ultimate SP2 64-bit
cirago BTA-3210 USB 2.0 Micro Bluetooth Dongle