Pentium D 955 vs Xeon 6517P

Primary details

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

Place in the ranking	209	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	24.47	no data
Market segment	Server	Desktop processor
Power efficiency	15.70	no data
Designer	Intel	Intel
Manufacturer	Intel	no data
Architecture codename	Granite Rapids (2024−2025)	Presler (2005−2007)
Release date	24 February 2025 (less than a year ago)	January 2006 (19 years ago)
Launch price (MSRP)	$1,195	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Performance to price scatter graph

Detailed specifications

Xeon 6517P and Pentium D 955 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	16 (Hexadeca-Core)	2 (Dual-core)
Threads	32	no data
Base clock speed	3.2 GHz	no data
Boost clock speed	4.2 GHz	3.46 GHz
L1 cache	112 KB (per core)	28 KB
L2 cache	2 MB (per core)	4096 KB
L3 cache	72 MB (shared)	0 KB
Chip lithography	Intel 3 nm	65 nm
Die size	no data	140 mm2
Maximum case temperature (TCase)	79 °C	no data
Number of transistors	no data	376 million
64 bit support	+	+
Windows 11 compatibility	no data	-

Compatibility

Information on Xeon 6517P and Pentium D 955 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	2
Socket	FCLGA4710	775
Power consumption (TDP)	190 Watt	130 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon 6517P and Pentium D 955. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AMX, Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512	no data
AES-NI	+	-
AVX	+	-
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	no data
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
TSX	+	-
Deep Learning Boost	+	-

Security technologies

Xeon 6517P and Pentium D 955 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data
SGX	+	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon 6517P and Pentium D 955 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 6517P and Pentium D 955. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR5(6400MT/s)	DDR1, DDR2, DDR3
Maximum memory size	4 TB	no data
Max memory channels	8	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

N/A

no data

Peripherals

Specifications and connection of peripherals supported by Xeon 6517P and Pentium D 955.

PCIe version	5.0	no data
PCI Express lanes	88	no data

Pros & cons summary

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Physical cores	16	2
Power consumption (TDP)	190 Watt	130 Watt

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