I actually went back to do a little math on this.
I went to Dell's site and configured 3 servers (PowerEdge 710 and PowerEdge 805). I held all components, warranty and other options equal.
The 3 servers were:
One with 2 Xeon 5570's and 36GB of RAM (3 channels) - $7408
One with 2 Xeon 5570's and 32GB of RAM (only 2 channels, but who would do that?) - $6978
One with 2 Opteron 2435's - $4565
The more expensive one is 62% more expensive, the lower performing dual channel box 2as 52% more expensive. So both are more expensive than the 40% delta on processor pricing.
For fun I configured an E5540 and that was still 20% more expensive. So I started thinking, where do you get to price parity? Basically that is an E5520. So, from a price perspective, you can get 8 2.26GHz Intel cores for roughly the same cost as AMD's most expensive 12 cores @ 2.6GHz.
Knowing that my most popular SKU is the 2431 (2.4GHz), to get to the same price for an Intel system, you're at the bottom, a 1.86GHz DUAL CORE, so 4 total cores of Nehalem vs. 12 2.4GHz Opteron cores. Oh, and you are still paying a price premium for those 4 cores (~4%).
So, yes, you can point to all types of benchmarks to show you how the top speed xeon parts are fast, but when it comes to pure economics, your choice is a 50-60% premium on the top bin vs our 2435 (to match those benchark charts), or you can try to match the price our our most popular dual socket six core platform, but in trying to match budget dollars, you are going to end up with a pair of 1.86 dual core processors. No turbo, no HT, 4.8GT QPI and only 800MHz memory.
If you check Gartner and IDC you'll see that the average ASP for 2 socket servers is ~$3600. That tells me that there are far more servers being bought in that price band than any others. And at $3600, look at what you get with Intel and what you get with AMD. It's all about value in the data center. Benchmarks are nice, but that is not how the overwhelming majority of servers are bought. I've been in this business for close to 20 years and I have never seen more of a focus on value. We're in exactly the right spot.
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