Ryzen 9 9950X vs Pentium D 820

Primary details

Comparing Pentium D 820 and Ryzen 9 9950X processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Desktop processor
Series	Pentium D	no data
Architecture codename	Smithfield (2005)	Granite Ridge
Release date	May 2005 (19 years ago)	July 2024 (recently)
Current price	$144	no data

Detailed specifications

Pentium D 820 and Ryzen 9 9950X 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)	16 (Hexadeca-Core)
Threads	2	32
Base clock speed	2.8 GHz	4.3 GHz
Boost clock speed	2.8 GHz	5.7 GHz
Bus support	800 MHz	no data
L1 cache	28 KB	64 KB (per core)
L2 cache	2 MB	1 MB (per core)
L3 cache	0 KB	64 MB (shared)
Chip lithography	90 nm	4 nm
Die size	206 mm2	2x 69 mm2
Maximum core temperature	64 °C	no data
Number of transistors	169 million	no data
64 bit support	+	+
Windows 11 compatibility	-	no data
Unlocked multiplier	No	Yes
VID voltage range	1.2V-1.4V	no data

Compatibility

Information on Pentium D 820 and Ryzen 9 9950X 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	PLGA775	AM5
Power consumption (TDP)	95 Watt	170 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium D 820 and Ryzen 9 9950X. You'll probably need this information if you require some particular technology.

AES-NI	-	+
AVX	no data	+
Enhanced SpeedStep (EIST)	-	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Thermal Monitoring	-	no data
Demand Based Switching	-	no data
PAE	32 Bit	no data
FSB parity	-	no data
Status	Discontinued	no data

Security technologies

Pentium D 820 and Ryzen 9 9950X 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 Pentium D 820 and Ryzen 9 9950X are enumerated here.

AMD-V	no data	+
VT-d	-	no data
VT-x	-	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium D 820 and Ryzen 9 9950X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR1, DDR2, DDR3	DDR5
ECC memory support	-	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

AMD Radeon Graphics

Peripherals

Specifications and connection of peripherals supported by Pentium D 820 and Ryzen 9 9950X.

PCIe version	no data	5.0
PCI Express lanes	no data	24

Pros & cons summary

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Physical cores	2	16
Threads	2	32
Chip lithography	90 nm	4 nm
Power consumption (TDP)	95 Watt	170 Watt

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Should you still have questions on choice between Pentium D 820 and Ryzen 9 9950X, ask them in Comments section, and we shall answer.

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