Pentium D 840 EE: specs and benchmarks

Summary

Intel started Pentium D 840 EE sales on May 2005. Based on a Smithfield architecture, this desktop processor is primarily aimed at home systems. It has 2 cores and 4 threads, and is based on 90 nm manufacturing technology, with a maximum frequency of 3200 MHz and a locked multiplier.

Compatibility-wise, this is Intel Socket 775 processor with a TDP of 130 Watt. It supports DDR1, DDR2, DDR3 memory.

Primary details

Pentium D 840 EE processor market type (desktop or notebook), architecture, sales start time and pricing.

Place in the ranking	not rated
Place by popularity	not in top-100
Market segment	Desktop processor
Architecture codename	Smithfield (2005)
Release date	May 2005 (19 years ago)

Detailed specifications

Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.

Physical cores	2 (Dual-core)
Threads	4
Boost clock speed	3.2 GHz	of 6.2 GHz (Core i9-14900KS)
L1 cache	28 KB	of 80 KB (EPYC 9965)
L2 cache	2 MB	of 2 MB (Xeon 6980P)
L3 cache	0 KB	of 1152 MB (EPYC 9684X)
Chip lithography	90 nm	of 3 nm (Apple M3 Max 16-Core)
Die size	206 mm2
Number of transistors	169 million	of 135,240 million (EPYC 9684X)
64 bit support	+
Windows 11 compatibility	-

Compatibility

Information on Pentium D 840 EE compatibility with other computer components and devices: 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	of 8 (Opteron 842)
Socket	775
Power consumption (TDP)	130 Watt	of 3100 ‑ 4500 (Ryzen 7 7435H)

Technologies and extensions

Technological capabilities and additional instructions supported by Pentium D 840 EE. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)

+

Memory specs

Types, maximum amount and channel number of RAM supported by Pentium D 840 EE's memory controller. Depending on the motherboard, higher memory frequency may be supported.

Supported memory types

DDR1, DDR2, DDR3

Benchmark performance

Single-core and multi-core benchmark results of Pentium D 840 EE. Overall benchmark performance is measured in points in 0-100 range, higher is better.

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