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Systems Benchmarking the AMD Sempron, Pentium 4, ATOM and Core 2 Quad

Having a bunch of machines at my disposal, why not do some simple benchmarking!

One interesting observation is between the Atom and the AMD. While the Atom performs higher in
all of the individual benchmarks, the AMD comes out ahead during kernel building. Why?

These are the systems

Name CPU RAM DISK
Atom Intel ATOM 230 1.6 GHz
Hyper-Threading Enabled		 2 GB DDR2 667Mhz 500 GB SATA 3.0 7200
Sempron AMD Sempron 2200+ 1.5 GHz 1 GB DDR 166/333MHz 60 GB IDE 7200
P4 Pentium 4 2.8 GHz 2 GB DDR 400 MHz (guess) 120 x 2 GB SATA 1.5 7200 (RAID0)
Quad Core Core 2 Quad 2.66 GHz 4 GB DDR2 800Mhz 1.5 TB SATA 3.0 7200

Build a Linux 2.6.18 Kernel, how fast?

Name Total Time Userland Time System Time
Quad Core 19m23.836s 18m21.714s 2m13.501s
P4 32m8.866s 28m53.919s 2m36.427s
Sempron 53m41.783s 45m53.363s 5m21.257s
Atom 62m35.708s 63m4.677s 5m1.459s

Memory Writes - Write to 512 Meg of memory 256 times using memset

Name Total Time Userland Time System Time
Atom 1m59.291s 1m58.552s 0m0.744s
Sempron 4m1.966s 4m0.421s s 0m1.258s
Disk block reads - 5,000,000 blocks

Name Total Time Userland Time System Time MB/s
Atom 0m41.267s 0m3.610s 0m37.288s 62.1
Sempron 1m17.816s 0m1.990s 0m15.095s 32.9

A shitload of integer multiplies

Name Total Time
Atom 0m3.898s
Sempron 0m5.655s