i5-11400 vs Pentium D 840

Primary details

Comparing Pentium D 840 and Core i5-11400 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	724
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Desktop processor
Power efficiency	no data	15.59
Architecture codename	Smithfield (2005)	Rocket Lake (2021)
Release date	May 2005 (19 years ago)	16 March 2021 (3 years ago)

Detailed specifications

Pentium D 840 and Core i5-11400 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)	6 (Hexa-Core)
Threads	2	12
Base clock speed	3.2 GHz	2.6 GHz
Boost clock speed	3.2 GHz	4.4 GHz
Bus rate	no data	8 GT/s
L1 cache	28 KB	64K (per core)
L2 cache	2 MB	256K (per core)
L3 cache	0 KB	12 MB (shared)
Chip lithography	90 nm	14 nm
Die size	206 mm2	no data
Maximum core temperature	70 °C	100 °C
Maximum case temperature (TCase)	no data	72 °C
Number of transistors	169 million	no data
64 bit support	+	+
Windows 11 compatibility	-	+
VID voltage range	1.2V-1.4V	no data

Compatibility

Information on Pentium D 840 and Core i5-11400 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	FCLGA1200
Power consumption (TDP)	130 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium D 840 and Core i5-11400. 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, Intel® AVX-512
AES-NI	-	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	2.0
Hyper-Threading Technology	-	+
TSX	-	+
Idle States	+	+
Thermal Monitoring	-	+
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 840 and Core i5-11400 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium D 840 and Core i5-11400 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium D 840 and Core i5-11400. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR1, DDR2, DDR3	DDR4-3200
Maximum memory size	no data	128 GB
Max memory channels	no data	2
Maximum memory bandwidth	no data	50 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	Intel UHD Graphics 730
Max video memory	no data	64 GB
Quick Sync Video	-	+
Clear Video	no data	+
Clear Video HD	no data	+
Graphics max frequency	no data	1.3 GHz
Execution Units	no data	24
InTru 3D	no data	+

Graphics interfaces

Available interfaces and connections of Pentium D 840 and Core i5-11400 integrated GPUs.

Number of displays supported

no data

3

Graphics image quality

Maximum display resolutions supported by Pentium D 840 and Core i5-11400 integrated GPUs, including resolutions over different interfaces.

4K resolution support	no data	+
Max resolution over HDMI 1.4	no data	4096x2160@60Hz
Max resolution over eDP	no data	5120 x 3200 @60Hz
Max resolution over DisplayPort	no data	5120 x 3200 @60Hz

Graphics API support

APIs supported by Pentium D 840 and Core i5-11400 integrated GPUs, sometimes API versions are included.

DirectX	no data	12.1
OpenGL	no data	4.5

Peripherals

Specifications and connection of peripherals supported by Pentium D 840 and Core i5-11400.

PCIe version	no data	4.0
PCI Express lanes	no data	20

Pros & cons summary

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Physical cores	2	6
Threads	2	12
Chip lithography	90 nm	14 nm
Power consumption (TDP)	130 Watt	65 Watt

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