well the current up to late 08 had what was called the 'Falcon' motherboard. it was different from earlier motherboards as it had extra beefy heat sinks, and a 175w instead of 205w power supply. and they were the ones that had the HDMI ports in them.
there is a new version coming out now and is just starting to trickle into the market it is called the 'Jasper'. from what I have read on gaming forums i frequent THIS is the version that should have NO more RROD errors. you can tell which 360 is in the box before you even buy it.
on the box there is a white rectangular area where the UPC code is. if it says 175w near the end its a 'Falcon' if it says 150w its a 'Jasper'. but as the early 'Falcon' 360s were put out before the boxes with the correct wattage were printed there was a chance that even if the box says 175w it could still be a 'Jasper' 360.
My 'Falcon' 360 was bought in 01/08 and the box said 205w but when i opened the box the sticker on the back of the console and on the power cord 'brick' said 175w. I hope this info helps
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