This Moblie Celeron is a Pentium III Class CPU.
http://www.anandtech...html?i=1561&p=1Here is a snip from the page and there is also a nice pic of the CPU.
No need to open any xbox's up on this one.
"The CPU that powers the Xbox is a Coppermine based Pentium III with only 128KB L2 cache. While this would make many think that the processor is indeed a Celeron, one of the key performance factors of the Pentium III that is lost in the Celeron core was left intact for this core. The Coppermine core was left with an 8-way set associative L2 cache instead of the 4-way set associative cache of the Celeron. Based on what we've seen with the Coppermine and Coppermine128 (Celeron) cores we estimate that the 8-way set associative L2 cache gives this particular core a 10% performance advantage over the Coppermine128 core of the Celeron.
The fact that Intel decided to go with a 128KB version of the Coppermine core indicates that there is a way of disabling half of the L2 cache without modifying the mapping associativity. We fully expect the Xbox's CPUs to be nothing more than Coppermine processors with half of their 256KB L2 cache disabled.
The other aspects of the CPU remain unchanged; the core does not have SSE2 support, only support for Intel's SSE instructions. It still has a 16KB L1 instruction cache and 16KB L1 data-cache and also very important is its 133MHz FSB. We've proved time and time again about how critical a high-speed FSB is to overall system performance, and the situation is no different inside a gaming console.
The 0.18-micron CPU is contained within Intel's mobile FC-BGA package that is soldered directly onto the Xbox's motherboard. This not only prevents anyone from attempting to upgrade the CPU but it also reduces the space necessary for the CPU."
