AMD Opteron 852 vs Intel Pentium 4 HT 640

Comparative analysis of AMD Opteron 852 and Intel Pentium 4 HT 640 processors for all known characteristics in the following categories: Essentials, Performance, Compatibility, Memory, Security & Reliability, Advanced Technologies, Virtualization.

AMD Opteron 852

Intel Pentium 4 HT 640

Differences

Reasons to consider the AMD Opteron 852

4.6x more L1 cache, more data can be stored in the L1 cache for quick access later

L1 cache	128 KB vs 28 KB
Max number of CPUs in a configuration	8 vs 1

Reasons to consider the Intel Pentium 4 HT 640

Around 23% higher clock speed: 3.2 GHz vs 2.6 GHz
2x more L2 cache, more data can be stored in the L2 cache for quick access later
Around 10% lower typical power consumption: 84 Watt vs 92 Watt

Maximum frequency	3.2 GHz vs 2.6 GHz
L2 cache	2048 KB vs 1024 KB
Thermal Design Power (TDP)	84 Watt vs 92 Watt

Compare specifications (specs)

	AMD Opteron 852	Intel Pentium 4 HT 640
Essentials
Architecture codename	Athens	Prescott
Launch date	February 2005	February 2005
Place in performance rating	not rated	not rated
Vertical segment	Server	Desktop
Processor Number		640
Series		Legacy Intel® Pentium® Processor
Status		Discontinued
Performance
64 bit support
L1 cache	128 KB	28 KB
L2 cache	1024 KB	2048 KB
Manufacturing process technology	90 nm	90 nm
Maximum frequency	2.6 GHz	3.2 GHz
Number of cores	1	1
Transistor count	106 million	169 million
Base frequency		3.20 GHz
Bus Speed		800 MHz FSB
Die size		135 mm2
Maximum core temperature		66.6°C
VID voltage range		1.200V-1.400V
Compatibility
Max number of CPUs in a configuration	8	1
Sockets supported	940	PLGA775
Thermal Design Power (TDP)	92 Watt	84 Watt
Low Halogen Options Available
Package Size		37.5mm x 37.5mm
Memory
Supported memory types		DDR1, DDR2, DDR3
Security & Reliability
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
FSB parity
Idle States
Intel 64
Intel® Demand Based Switching
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Thermal Monitoring
Virtualization
Intel® Virtualization Technology (VT-x)