Pentium 4 HT 561 vs Xeon E5-2650

Primary details

Comparing Xeon E5-2650 and Pentium 4 HT 561 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1275	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.34	no data
Market segment	Server	Desktop processor
Power efficiency	4.63	no data
Architecture codename	Sandy Bridge-EP (2012)	Prescott (2001−2005)
Release date	6 March 2012 (12 years ago)	June 2005 (19 years ago)
Launch price (MSRP)	$91	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E5-2650 and Pentium 4 HT 561 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	8 (Octa-Core)	1 (Single-Core)
Threads	16	2
Base clock speed	2 GHz	no data
Boost clock speed	2.8 GHz	3.6 GHz
Bus rate	8 GT/s	no data
L1 cache	64 KB (per core)	16 KB
L2 cache	256 KB (per core)	1 MB
L3 cache	20480 KB (shared)	0 KB
Chip lithography	32 nm	90 nm
Die size	435 mm2	109 mm2
Maximum core temperature	77 °C	no data
Number of transistors	2,270 million	125 million
64 bit support	+	-
Windows 11 compatibility	-	-

Compatibility

Information on Xeon E5-2650 and Pentium 4 HT 561 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	2	1
Socket	FCLGA2011	775
Power consumption (TDP)	95 Watt	115 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-2650 and Pentium 4 HT 561. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX	no data
AES-NI	+	-
AVX	+	-
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	-	no data
Demand Based Switching	+	no data

Security technologies

Xeon E5-2650 and Pentium 4 HT 561 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-2650 and Pentium 4 HT 561 are enumerated here.

VT-d	+	no data
VT-x	+	no data
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-2650 and Pentium 4 HT 561. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR1, DDR2, DDR3
Maximum memory size	384 GB	no data
Max memory channels	4	no data
Maximum memory bandwidth	51.2 GB/s	no data
ECC memory support	+	-

Peripherals

Specifications and connection of peripherals supported by Xeon E5-2650 and Pentium 4 HT 561.

PCIe version	3.0	no data
PCI Express lanes	40	no data

Pros & cons summary

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Physical cores	8	1
Threads	16	2
Chip lithography	32 nm	90 nm
Power consumption (TDP)	95 Watt	115 Watt

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Should you still have questions on choice between Xeon E5-2650 and Pentium 4 HT 561, ask them in Comments section, and we shall answer.

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