- Jan 17, 2006
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According to this site, Conroe has a really bad weakness.
If this is the case, then all those people who wanted to wait... I wonder how they feel....
link: http://sharikou.blogspot.com/2006/04/conroe-performance-claim-being-busted.htmlThe following results were obtained by running 32 bit ScienceMark binaries optimized for Intel Pentium:
Molecular Dynamics
A64: 1872.68
Conroe : 2133.38 -- 14% faster
Primordia (Energy calculations for 1 atom)
Athlon64: 1506.83 -- 10% faster
Conroe: 1365.85
Cryptography
Athlon64: 1345.05 -- 26.3% faster
Conroe: 1065.59
STREAM
Athlon64: 1512.55 -- 21.7% faster
Conroe: 1242.94
The above results were for an Athlon overclocked to 2.8GHZ and a Conroe at 2.4GHZ, with the Athlon having a 16.7% clockspeed advantage. For a direct comparision at the same clockspeed, we normalize the Conroe scores by taking into account the frequency difference. Assuming the best scenario in which Conroe scores scale linearly with clock speed, we multiply the Conroe scores by a factor of 2.8/2.4. Thus, with a 2.8GHZ Conroe, we would have
Molecular Dynamics
Athlon 64 2.8GHZ: 1872.68
Conroe 2.8GHZ : 2133.38 * 2.8/2.4 = 2489 -- 32.9% faster
Primordia (Atom)
Athlon64 2.8GHZ: 1506.83
Conroe 2.8GHZ: 1365.85 * 2.8/2.4 = 1593.49 -- 5.7% faster
Cryptography
Athlon64 2.8GHZ: 1345.05 -- 8.2% faster
Conroe 2.8GHZ: 1065.59 * 2.8/2.4
STREAM *
Athlon64 2.8GHZ: 1512.55 -- 4.3% faster
Conroe 2.8GHZ: 1242.94 * 2.8/2.4 = 1450
ScienceMark is a strictly CPU/memory test, it doesn't involve video or disk I/O, it is basically a raw speed test. The ScienceMark is freely available from http://www.sciencemark.org/ for both Windows XP and Windows XP x64.
However, the above results showed a violent CPU performance fluctuation for Conroe, from it being 32% faster to being 8% slower. How can this be explained?
If this is the case, then all those people who wanted to wait... I wonder how they feel....