Just to follow up:
MAME version benchmarked: 0.137 (because these are the historic values I have from my previous benchmarking of the Atom)
AMD Zacate System: AMD Zacate E350 overclocked to 1680.387 Mhz (a 5% overclock, the best I could reliably do) with 2 GB of DDR3-1119 SDRAM (5% overclock from 1066)
Intel Atom System: Intel Atom 330 overclocked to 1900 Mhz (an 18.7% overclock, the best I could reliably do) with 2 GB of DDR2-640 SDRAM (18.7% overclock from 533).
After some more comprehensive benchmarking (benchmarking ~300 games that ranged from 48.30% frame rate to 172.27% frame rate in my original Intel Atom benchmarking - see the table at http://www.ischo.com/mamebench/overclock.html), I came up with this:
The AMD Zacate system averaged 149.3% of the performace of the Intel Atom (and was thus on average 49.3% faster).
With the Zacate, 85 more games are playable at full frame rate than on the Atom (with no games being more playable on the Atom than the Zacate). These are basically all of the 'yellow' and 'red' games from the link above, except for the first one (racedriv, which only plays at 82.80% average frame rate on the Zacate).
Another interesting statistic: MAME 0.141u3 is on average almost 8% slower than MAME 0.137 for the set of games benchmarked (on the exact same Zacate configuration).
Also possibly interesting: the Zacate system (not including monitor) draws about 21 Watts at idle and 35 Watts under full load, measured at the wall socket using a Kill-A-Watt. These overclocked numbers are about 1.5W more than non-overclocked.
Edited by Bryan Ischo (03/10/11 10:09 PM)
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