i9-14900K vs Pentium D 820

Primary details

Comparing Pentium D 820 and Core i9-14900K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	81
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	61.50
Market segment	Desktop processor	Desktop processor
Series	Pentium D	no data
Power efficiency	no data	28.66
Architecture codename	Smithfield (2005)	Raptor Lake-R (2023−2024)
Release date	May 2005 (19 years ago)	17 October 2023 (1 year ago)
Launch price (MSRP)	no data	$589

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Pentium D 820 and Core i9-14900K 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)	24 (Tetracosa-Core)
Threads	2	32
Base clock speed	2.8 GHz	3.2 GHz
Boost clock speed	2.8 GHz	5.8 GHz
Bus rate	800 MHz	no data
L1 cache	28 KB	80 KB (per core)
L2 cache	2 MB	2 MB (per core)
L3 cache	0 KB	36 MB (shared)
Chip lithography	90 nm	Intel 7 nm
Die size	206 mm2	257 mm2
Maximum core temperature	64 °C	100 °C
Number of transistors	169 million	no data
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	-	+
VID voltage range	1.2V-1.4V	no data

Compatibility

Information on Pentium D 820 and Core i9-14900K 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	FCLGA1700
Power consumption (TDP)	95 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium D 820 and Core i9-14900K. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	-	+
AVX	-	+
Enhanced SpeedStep (EIST)	-	+
Speed Shift	no data	+
Turbo Boost Technology	-	2.0
Hyper-Threading Technology	-	+
TSX	-	+
Idle States	+	+
Thermal Monitoring	-	+
SIPP	-	+
Demand Based Switching	-	no data
PAE	32 Bit	no data
Turbo Boost Max 3.0	no data	+
FSB parity	-	no data
Deep Learning Boost	-	+

Security technologies

Pentium D 820 and Core i9-14900K technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium D 820 and Core i9-14900K are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium D 820 and Core i9-14900K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR1, DDR2, DDR3	DDR4, DDR5
Maximum memory size	no data	192 GB
Max memory channels	no data	2
Maximum memory bandwidth	no data	89.6 GB/s
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	Intel UHD Graphics 770
Quick Sync Video	-	+
Clear Video HD	no data	+
Graphics max frequency	no data	1.65 GHz
Execution Units	no data	32

Graphics interfaces

Available interfaces and connections of Pentium D 820 and Core i9-14900K integrated GPUs.

Number of displays supported

no data

4

Graphics image quality

Maximum display resolutions supported by Pentium D 820 and Core i9-14900K integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	no data	4096 x 2160 @ 60Hz
Max resolution over eDP	no data	5120 x 3200 @ 120Hz
Max resolution over DisplayPort	no data	7680 x 4320 @ 60Hz

Graphics API support

APIs supported by Pentium D 820 and Core i9-14900K integrated GPUs, sometimes API versions are included.

DirectX	no data	12
OpenGL	no data	4.5

Peripherals

Specifications and connection of peripherals supported by Pentium D 820 and Core i9-14900K.

PCIe version	no data	5.0 and 4.0
PCI Express lanes	no data	16

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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Pros & cons summary

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Physical cores	2	24
Threads	2	32
Power consumption (TDP)	95 Watt	125 Watt

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Should you still have questions on choice between Pentium D 820 and Core i9-14900K, ask them in Comments section, and we shall answer.

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