64bit processing is a good thing for intel although internally the processer could of done that long ago and those Hyper-threading cpu's was 64 computing right there becasue it 2 32bit commands being executed at the same time* Pentium 4 6XX Sequence Processor
* Clock speeds:
P4 660 - 3.6GHz
P4 650 - 3.4GHz
P4 640 - 3.2GHz
P4 630 - 3GHz
* 800MHz "Quad-Pumped" frontside bus
* 0.09-micron manufacturing process
* Hyper-Threading Technology
* 2MB on-chip, full-speed L2 cache
* Enhanced Intel SpeedStep Power Savings technology "EIST"
* Intel EM64T Extensions - 64-bit computing
* Execute Disable Bit - For enhanced security
* 16KB L1 Data Cache
* Streaming SIMD Extensions - SSE2, SSE3
* 31-stage "Hyper Pipelined" Technology for higher clock speeds
* Rapid Execution Engine - ALU clocked at 2X frequency of core
* 128-bit Floating Point/Multimedia unit
* Intel "NetBurst" micro-architecture
* Supported by the Intel i925XE and i915 chipsets, with Hyper-Threading
* Intel MMX media enhancement technology
* Memory cacheability up to 256 terabytes of addressable memory in 64-bit mode and 4GB in 32-bit mode
* 1.25 - 1.4V operating voltage range
* LGA775 Packaging - Land Grid Array
* 84 - 115 watts TPD (Thermal Design Power)
and internally they work with 512bit :O