Information gathered from

Information gathered from: http://www.pantherproducts.co.uk/Articles/CPU/CPU%20Comparison.shtml

*CPU*	Bus Speed (FSB)	*L1 Cache*	*L2 Cache*	*Micron*	*Transistors*	*Form factor*	*Voltage*
*AMD Athlon (original)*	200 MHz (100*2)	128K (64K Instructions 64K Data)	512K (Running at either 1/2, 2/5 or 1/3 or CPU frequency depending on CPU speed)	.25/.18	22 Million	Slot A	1.6v
*AMD Athlon Thunderbird*	200Mhz (100*2)	128K (64K Instructions 64K Data)	256K On Chip	.18	37 Million	Socket A	1.75v
*AMD Athlon XP*	200/266Mhz (1002/1332)	128K (64K Instructions 64K Data)	256K On Chip	.18	37.5 Million	Socket A	1.75v
*AMD Athlon XP T-bred*	266/333Mhz (1332/1662)	128K	256K	.13	37.2/37.6 (higher speeds)	Socket A	1.5-1.65v
*AMD Athlon Barton*	333/400Mhz	128K	512K	.13	54.3 Million	Socket A	1.65v
*AMD Athlon 64*	400Mhz (hyper transport link)	128K	1MB	.13	105.9 Million	754-pin socket	1.5v
*AMD Athlon 64 FX*	400Mhz (hyper transport link) 128-bit	128K	1MB	.13	105.9 Million	940-pin socket	1.5v
*Intel P4*	400Mhz (100*4)	20K (12K Instructions 8K Data)	256K On Chip	.18	42 Million	Slot 423 / Socket 478	1.7v
*Intel P4 Northwood*	400-800Mhz (100-200*4)	20K (12K Instructions 8K Data)	512K On Chip	.13	55 Million	Socket 478	1.5-1.525
*Intel P4 Prescott*	800Mhz	28K (12K Instructions 16K Data)	1MB On Chip	.09	100 Million	Socket 478	1.2 ~
*Intel PIII*	100/133Mhz	32K (16K Instructions 16K Data)	512K off chip for 450-600B, 256K On chip for 500E upwards	.25 (Katmai - original) .18 (CUmine)	9.5M Katmai 28M CUmine	Slot 1 (original) / Socket 370 (FC-PGA)	2v (Katmai) 1.65v (CUmine)
*Intel Celeron*	66Mhz (now 100Mhz at higher speeds)	32K (16K Instructions 16K Data)	128K (on chip)	.18	28 Million	Socket 370 (FC-PGA)	1.5v - 1.65v (CPU speed dependant)
*Celeron Tualatin*	100Mhz	32K (16K Instructions 16K Data)	256K On Chip	.13	?	Socket 370 (FC-PGA2)	1.45v
*Celeron P4*	400Mhz	20K (12K Instructions 8K Data)	128K (on chip)	.18	42 Million	Socket 478	1.75
*Cyrix III*	100/133Mhz	128K (64K Instructions 64K Data)	64K	.18	11.2 Million	Socket 370	1.9v
*AMD Duron*	200Mhz (100*2)	128K (64K Instructions 64K Data)	64K	.18	25 Million	Socket A	1.6v

*CPU*	*Instruction Set(s)*	*Chip Frequencies*	*Other Info*
*AMD Athlon (original)*	MMX, 3DNOW	500Mhz - 1Ghz	Used a cartridge instead of a chip. Had DDR functionality between CPU and cache.
*Athlon Thunderbird*	MMX, Enhanced 3DNOW	650Mhz - 1.4Ghz	AMD went back to the socket after finding ways to increase the speed to these chips. Also uses DDR. Cache ran at full speed unlike the original Athlon.
*AMD Athlon XP*	MMX, 3DNOW Professional*	1500+ (1.3Ghz) - 2800+ (1.73Ghz)	A new core produced more power whilst making less heat. AMD also started to go off the MHz rating in favour of model numbers, in other words they used an old style PR rating based on the thunderbird.
*AMD Athlon64*	SSE2 3DNOW! Professional	3200+ (more to be introduced)	The Athlon 64 is the first CPU by AMD to use 64-bit operations. This chip is specifically design to use 64-bit Operating systems and Applications. It also uses a hyper transport link to get access to the memory instead of the normal FSB because of its inboard memory controller allowing it to bypass the chipset on route to the main memeory.
*Intel P4*	MMX, SSE 2	Socket 423 1.3Ghz- 2Ghz Socket 478 2Ghz - 2.4Ghz (now higher)	The first CPU to use a 400Mhz system bus for its chip. changed to socket 478 to allow extra grounding pins, allowing it to go beyond 2Ghz.
*Intel P4 Northwood*	MMX, SSE 2	2Ghz - 3.2Ghz	The Northwood drops the micron size down to .13 and also adds an extra 256K of L2 cache to the previous version of the P4. Also as the chips got faster they got a FSB boost from 400Mhz (1004) to 533Mhz (1334)
*Intel P4 Prescott*	PNI (Prescott New Instructions) Could be called SSE 3	3.2Ghz +	Once again the New Pentium 4 is produced using an even smaller Micron technology. .09 in this instance. And like the Northwood the Prescott adds more cache. An extra 8K of L1 Data cache and an extra 512K of Level 2 Cache taking it a massive 1Mb of On Chip cache. SSE 3 offers an extra 13 instructions from SSE 2 you can find out about them at Geek.com
*Intel PIII*	MMX, SSE	450Mhz - 1.4Ghz	Went from the slot 1 form factor back to the sockets just like AMD did. This was Intel longest running CPU in terms of broadness of MHz in its chips.
*Intel Celeron*	MMX, SSE	Celeron PII 266Mhz - 533Mhz Celeron PIII 533Mhz - 1.2Ghz	The Celeron has gone through many stages from the PII to to the latest P4. The Celeron was always based on the power CPU with the cache cut down and the system bus knocked down as well (except in the case of the P4 Celeron where the system bus was kept at 400Mhz). This was either due to a fault meaning it could not be sold as the higher CPU or by design.
*Celeron Pentium 4*	MMX, SSE 2	1.7Ghz-1.8Ghz
*Celeron Tualatin*	MMX SSE	1Ghz - 1.2Ghz
*Cyrix III*	MMX, 3DNOW	500Mhz - 700Mhz	VIA was quick to drop to the .15 micron process. Unfortunately as with all the VIA CPU's the FPU prevented it from being anything more than a cheap reliable business type machine.
*AMD Duron*	MMX, 3DNOW SSE in the Morgan core	Duron Spitfire 600Mhz - 950Mhz Duron Morgan 1Ghz - 1.5Ghz	The Duron has to be one of the best chips available for all concerned. It was an Athlon with 64K cache. The Morgan core even had the SSE built in like the Athlon XP. The price for these chips is very reasonable and is a fast CPU considering its aimed at the budget market.