Xeon Platinum 9221 vs Pentium D 955

Primary details

Comparing Pentium D 955 and Xeon Platinum 9221 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Server
Series	no data	Intel Xeon Platinum
Architecture codename	Presler (2005−2007)	Cascade Lake-AP (2019)
Release date	January 2006 (18 years ago)	2 April 2019 (5 years ago)

Detailed specifications

Pentium D 955 and Xeon Platinum 9221 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)	32 (Dotriaconta-Core)
Threads	no data	64
Base clock speed	no data	2.3 GHz
Boost clock speed	3.46 GHz	3.7 GHz
Bus type	no data	DMI 3.0
Bus rate	no data	4 × 8 GT/s
Multiplier	no data	21
L1 cache	28 KB	64K (per core)
L2 cache	4096 KB	1 MB (per core)
L3 cache	0 KB	71.5 MB (shared)
Chip lithography	65 nm	14 nm
Die size	140 mm2	no data
Number of transistors	376 million	8,000 million
64 bit support	+	+
Windows 11 compatibility	-	+

Compatibility

Information on Pentium D 955 and Xeon Platinum 9221 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	8
Socket	775	Intel BGA5903
Power consumption (TDP)	130 Watt	250 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium D 955 and Xeon Platinum 9221. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® AVX-512
AES-NI	-	+
AVX	-	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	no data	+
Turbo Boost Technology	no data	2.0
Hyper-Threading Technology	no data	+
TSX	-	+

Security technologies

Pentium D 955 and Xeon Platinum 9221 technologies aimed at improving security, for example, by protecting against hacks.

TXT

no data

+

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium D 955 and Xeon Platinum 9221 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium D 955 and Xeon Platinum 9221. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR1, DDR2, DDR3	DDR4-2933
Maximum memory size	no data	2 TiB
Max memory channels	no data	12
Maximum memory bandwidth	no data	281.6 GB/s
ECC memory support	-	+

Peripherals

Specifications and connection of peripherals supported by Pentium D 955 and Xeon Platinum 9221.

PCIe version

no data

3.0

Pros & cons summary

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Physical cores	2	32
Chip lithography	65 nm	14 nm
Power consumption (TDP)	130 Watt	250 Watt

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