Sure, Legit Reviews did have to push the voltage over spec to 1.75V and bump the QPI up to 1.35 but they hit a huge memory overclock.  It wasn't even necessary to go that far to get to 2200MHz; they simply asked for it from the DIMMs and they provided, no voltage tweaks or any other BIOS tinkering needed.  Read about Kingston's insane HyperX DDR3 4GB 2133MHz Memory, but if you want to pick it up be ready for an equally insane price.

"if you are into overclocking, the Kingston 2133MHz HyperX T1 memory kit

(KHX2133C8D3T1K2/4GX) has got you covered. We were able to reach 2200MHz by just

upping the base clock of the system. Reaching 2300MHz was as easy as setting primary

timings to 9-9-9. With very little tweaking and minor voltage adjustments, we hit

2400MHz! Getting big numbers from this memory was extremely easy. This is by far, the

fastest memory I’ve had the pleasure of testing. Sure, you can get higher bandwidth

numbers on a Triple Channel X58 system, but in terms of raw MHz I haven’t had

anything else that can touch it!"

Here are some more Memory articles from around the web:

• 2008 2.8 8

  Core Apple Mac Pro Kingston 16 GB RAM Upgrade @ motherboards.org

• Patriot Extreme Performance Viper 3GB PC3-10666 kit Review @

  XtremeComputing

• Core i5 & i7 Memory Kit Round-Up @ ExtremeTech
• Crucial (BL12864BA1608) DDR3 1600 Ballistix 2 gig Kit review @

  XtremeComputing

• Corsair Dominator 2x2 GB DDR3 1600 Cas 8 Review @ OCC
• Corsair Ice T30 Dominator Memory Cooler Review @ Ninjalane