Anyway, alvino....the PS3 doesn't have more cores. It's a single cored processor, whilst the 360 has 3 actual processing cores. Really, the only thing you're paying for in a PS3 is the blueray drive. Otherwise, the gaming machine is pretty inferior. I HAS 256 MB RAM FOR GOD's SAKE!!!
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Well the Cell has one general processing core, but the 7 SPE cores are in essence real processors. It just needs directions in order for it to work, which is why developers have such a pain developing games for the PS3.
The RAM is also different. There is 256MB of XDR RAM for the system and 256MB of GDDR3 for the RSX graphics chip. Sony basically pre-assigned the amount. Compared to the Xbox 360 where it's just 512MB of GDDR3 and Microsoft lets developers partition the amount of RAM they need for the components when they want it or need it, meaning it's more flexible.