On Mon, 11 Dec 2006, Michael Stone wrote:
Can anyone else reproduce these results? I'm on similar hardware (2.5GHz P4, 1.5G RAM)...
There are two likely candidates for why Daniel's P4 3.0GHz significantly outperforms your 2.5GHz system.
1) Most 2.5GHZ P4 processors use a 533MHz front-side bus (FSB); most 3.0GHZ ones use an 800MHz bus.
2) A typical motherboard paired with a 2.5GHz era processor will have a single-channel memory interface; a typical 3.0GHZ era board supports dual-channel DDR.
These changes could easily explain the magnitude of difference in results you're seeing, expecially when combined with a 20% greater raw CPU clock.
-- * Greg Smith gsmith@xxxxxxxxxxxxx http://www.gregsmith.com Baltimore, MD
