Core details	Athlon 64 X2	Athlon 64 X2	Athlon 64 X2	Athlon 64 X2	Athlon 64 X2	Athlon 64 X2	Athlon 64 X2	Athlon 64 X2
Development name	Manchester	Manchester	Toledo	Toledo	Windsor	Windsor	Windsor	Brisbane
Construction size (nm)	90	90	90	90	90	90	90	65
Transistor count (millions)	154	154	154	230	154	154	230	?
Number of processor cores	2	2	2	2	2	2	2	2
Registers - ALU (bits)	64	64	64	64	64	64	64	64
Registers - FPU (bits)	80 (128 Ext)	80 (128 Ext)	80 (128 Ext)	80 (128 Ext)	80 (128 Ext)	80 (128 Ext)	80 (128 Ext)	80 (128 Ext)
Connection Type	Socket 939	Socket 939	Socket 939	Socket 939	Socket AM2	Socket AM2	Socket AM2	Socket AM2
Model Details
Name / Core speed (GHz)	3600+ / 2.0	3800+ / 2.0	3800+ / 2.0	4400+ / 2.2	3600+ / 2.0	3800+ / 2.0	4000+ / 2.0	3600+ / 1.9
		4200+ / 2.2	4200+ / 2.2	4800+ / 2.4		4200+ / 2.2	4400+ / 2.2	4000+ / 2.1
		4600+ / 2.4	4600+ / 2.4			4600+ / 2.4	4800+ / 2.4	4400+ / 2.3
						5000+ / 2.6	5200+ / 2.6	4800+ / 2.5
						5400+ / 2.8	5600+ / 2.8	5000+ / 2.6
							6000+ / 3.0	5200+ / 2.7
							6400+ / 3.2	5400+ / 2.8
								5600+ / 2.9
HyperTransport Details
CLK speed (MHz)	1000	1000	1000	1000	1000	1000	1000	1000
Data transfer rate (MHz)	2000	2000	2000	2000	2000	2000	2000	2000
Total bus width (bits)	32	32	32	32	32	32	32	32
Maximum bandwidth (GB/sec)	8.00	8.00	8.00	8.00	8.00	8.00	8.00	8.00
Integrated Memory Controller Details
Controller width (bits)	128	128	128	128	128	128	128	128
Max DRAM CLK speed (MHz)	200	200	200	200	200	200	200	200
Controller type	DDR	DDR	DDR	DDR	DDR2	DDR2	DDR2	DDR2
Maximum bandwidth (GB/sec)	6.40	6.40	6.40	6.40	12.8	12.8	12.8	12.8
Cache details
L1 amount (KiB)	128 x 2	128 x 2	128 x 2	128 x 2	128 x 2	128 x 2	128 x 2	128 x 2
L1 location	on-die	on-die	on-die	on-die	on-die	on-die	on-die	on-die
L1 instruction cache size (KiB)	64 x 2	64 x 2	64 x 2	64 x 2	64 x 2	64 x 2	64 x 2	64 x 2
L1 data cache size (KiB)	64 x 2	64 x 2	64 x 2	64 x 2	64 x 2	64 x 2	64 x 2	64 x 2
L2 amount (KiB)	256 x 2	512 x 2	512 x 2	1024 x 2	256 x 2	512 x 2	1024 x 2	512 x 2
L2 location	on-die	on-die	on-die	on-die	on-die	on-die	on-die	on-die
L2 bus width (bits)	128	128	128	128	128	128	128	128
Extension support
MMX	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
3DNow!	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
SSE	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Enhanced 3DNow!	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
3DNow! Professional	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
SSE2	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
SSE3	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
SSSE3	No	No	No	No	No	No	No	No
Additional Features
Intel 64	No	No	No	No	No	No	No	No
AMD64	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
HyperThreading	No	No	No	No	No	No	No	No
NX Bit	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Virtualization Technology	No	No	No	No	Yes	Yes	Yes	Yes

Notes

© AMD & Intel CPU Specifications - N D Evanson 2008