Legit Reviews posted a review on the Intel Xeon X5570 and E5520 Gainestown Processors. It should be noted that on the Intel Xeon X5570 the processor operates at 2.93GHz with DDR3 memory speeds up to 1333MHz. Here's a taster:

Our quick look at the Intel Xeon 5500 series was a very impressive one. The Intel Xeon X5570 that we looked at today operates at 2.93GHz during normal operation, but when Turbo Boost Technology is enabled the operating frequencies increased up to 3.33GHz. With this much clock frequency and all the performance features that the Intel Xeon 5500 series has to offer you end up with a server processor that blows past the competition without looking back.

When it comes to pricing the Intel Xeon E5520 can be purchased for $394.99 shipped, while the Intel Xeon X5570 can be found for $1448.99 (It has a suggested retail price of $1386). With many IT departments having shrinking budgets this year these will be a tough sell for many companies, but for those with a budget they are able to spend these processors will increase productivity in the server room!