Xeon E5540 vs Pentium D1508

Primary details

Comparing Pentium D1508 and Xeon E5540 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1899	2023
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	0.64
Market segment	Server	Server
Power efficiency	7.72	2.07
Architecture codename	no data	Gainestown (2009−2010)
Release date	1 October 2015 (9 years ago)	30 March 2009 (15 years ago)
Launch price (MSRP)	no data	$30

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Pentium D1508 and Xeon E5540 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	2 (Dual-core)	4 (Quad-Core)
Threads	4	8
Base clock speed	2.2 GHz	2.53 GHz
Boost clock speed	2.6 GHz	2.8 GHz
L1 cache	no data	64 KB (per core)
L2 cache	no data	256 KB (per core)
L3 cache	3 MB	8 MB (shared)
Chip lithography	14 nm	45 nm
Die size	no data	263 mm2
Maximum core temperature	no data	76 °C
Number of transistors	no data	731 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Pentium D1508 and Xeon E5540 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	1	2
Socket	FCBGA1667	FCLGA1366
Power consumption (TDP)	25 Watt	80 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium D1508 and Xeon E5540. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX2	no data
AES-NI	+	-
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	1.0
Hyper-Threading Technology	+	+
TSX	+	-
Idle States	+	+
Thermal Monitoring	+	-
Demand Based Switching	no data	+
PAE	no data	40 Bit
GPIO	+	no data

Security technologies

Pentium D1508 and Xeon E5540 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	+	no data
Identity Protection	+	-
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium D1508 and Xeon E5540 are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium D1508 and Xeon E5540. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4, DDR3	DDR3
Maximum memory size	128 GB	144 GB
Max memory channels	2	3
Maximum memory bandwidth	no data	25.6 GB/s
ECC memory support	+	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

N/A

Peripherals

Specifications and connection of peripherals supported by Pentium D1508 and Xeon E5540.

PCIe version	2.0/3.0	2.0
PCI Express lanes	32	no data
USB revision	2.0/3.0	no data
Total number of SATA ports	6	no data
Number of USB ports	8	no data
Integrated LAN	+	no data
UART	+	no data

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

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Pros & cons summary

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Performance score	2.04	1.75
Recency	1 October 2015	30 March 2009
Physical cores	2	4
Threads	4	8
Chip lithography	14 nm	45 nm
Power consumption (TDP)	25 Watt	80 Watt

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Should you still have questions on choice between Pentium D1508 and Xeon E5540, ask them in Comments section, and we shall answer.

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