Harpertown: New 45nm Xeons from Intel
Posted on: 09/17/2007 05:00 AM

Test Systems

Since everyone's focus is turning towards power consumption, and "performance-per-watt" these days, I made a special effort to level the playing field as much as I could this time around. A single test system was used for all three sets of Intel processors. Nothing at all changed between platforms except for the actual CPUs themselves.



You may be wondering why I didn't use faster Clovertown Xeons for this test. The new 3.0ghz Harpertown Xeons have an 80W TDP. The fastest Woodcrest and Clovertown Xeons that fall into the same 80W TDP category are the ones you see here today (3.0ghz and 2.33ghz respectively). The 2.66ghz Clovertowns would turn in better performance results than the 2.33ghz presented here, but they draw significantly more power (120W TDP). To show you all what you get for the same "energy costs", I thought this match-up made perfect sense.

In all of the following graphs, the platforms will be called by the official processor product names (5160 for Woodcrest, E5345 for Clovertown and E5472 for Harpertown).

Workloads

I used the following versions of our test applications: <ul><li>SiSoft Sandra XII.2008c
<li>Black & Scholes Kernel (Optimized x64, custom VS2005 compile)
<li>Autodesk's 3ds Max 9.0 64-bit
<li>SunGard Adaptiv Credit Risk Analysis 3.0
<li>CINEBENCH R10 x64
<li>POV-Ray 3.70 beta 22
<li>SPECjbb2005
<li>Euler3d CFD Benchmark 2.2
<li>Fritz Chess Benchmark
<li>FlamMap (FSPRO)
<li>MyriMatch</ul>All benchmark numbers presented were an average of three runs, except for 3ds Max which is listed as the highest of three runs.

All test systems' desktops were set at 1280x1024, 32bit color with a 60Hz refresh rate. "Optimized Defaults" were used in the BIOS on all machines.

"Hardware Prefetching" was disabled for the SPECjbb2005 runs.

All power measurments throughout this review were taken with an Extech 380803 power meter. Readings were for the computer itself, and all other devices (monitor, speakers, etc) were plugged-in seperately and not included in the measurments. It is also important to note that Intel has recently released new "G stepping" Clovertown and Woodcrest processors that make better use of thermal management. The processors used in this article are NOT the new "G stepping".

With the exception of the Black & Scholes kernel, all of our testing methods are publicly available and easily reproducible. If you have any questions or concerns regarding the tests, feel free to discuss them in our forums


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