xeon E5-2620 v2 vs xeon X5650

[Kilgore23]

Hey all, can someone please help me understand if and why the e5-2620 v2 or non v2 would be faster than the x5650?

In scenarios such as:

Single threaded application where they recommend 3ghz for the single thread

Dual threaded application where they recommend 2.5 ghz for dual core



e5-2620 v2: http://ark.intel.com/products/75789

x5650: http://ark.intel.com/products/47922/Intel-Xeon-Processor-X5650-(12M-Cache-2_66-GHz-6_40-GTs-Intel-QPI)

I understand the e5-2620 v2 has a little more cache by 3mb, but has much less clock speed of 2.1 - 2.6 ghz.

So how is the e5-2620 v2 any faster for the scenarios mentioned above over the x5650 which has a good amount more clock speed of 2.66 - 3.06 ghz?

Any help much appreciated

 

[Karsten75]

Copy and paste this full link: The forums break these links for clicking.

=2051&cmp[]=1304]http://www.cpubenchmark.net/compare.php?cmp[]=2051&cmp[]=1304

The E5-2620 v2 is a much newer processor, with improved architecture. It does things faster/more efficiently. Neither will meet the 3GHz clock speed requirement.

The E5-2620 v2 has 2011 board interconnects vs the 1366 of the other model. THat includes 40 PCIe lanes and quad-channel memory. Not sure what the older processor has. THe differences aren't really that spectacular though and the older processor seems to be better value for money - although you might be able to buy a lower-spec newer architecture that matches up better.