Pentium D 955 EE vs Core 2 Quad Q8400

Primary details

Comparing Core 2 Quad Q8400 and Pentium D 955 EE processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking2281not rated
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorDesktop processor
Power efficiency1.30no data
Architecture codenameYorkfield (2007−2009)Presler (2005−2007)
Release date19 April 2009 (15 years ago)January 2006 (18 years ago)

Detailed specifications

Core 2 Quad Q8400 and Pentium D 955 EE 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 cores4 (Quad-Core)2 (Dual-core)
Threads44
Base clock speed2.66 GHzno data
Boost clock speed0.67 GHz3.46 GHz
Bus rate1333 MHzno data
L1 cache64 KB (per core)28 KB
L2 cache4 MB (shared)4 MB
L3 cache0 KB0 KB
Chip lithography45 nm65 nm
Die size2x 82 mm2140 mm2
Maximum case temperature (TCase)71 °Cno data
Number of transistors456 million376 million
64 bit support++
Windows 11 compatibility--
VID voltage range0.85V-1.3625Vno data

Compatibility

Information on Core 2 Quad Q8400 and Pentium D 955 EE 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 configuration12
SocketFCLGA775,LGA775775
Power consumption (TDP)95 Watt130 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q8400 and Pentium D 955 EE. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)++
Turbo Boost Technology-no data
Hyper-Threading Technology-no data
Idle States+no data
Thermal Monitoring+-
Demand Based Switching-no data
FSB parity-no data

Security technologies

Core 2 Quad Q8400 and Pentium D 955 EE 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 Core 2 Quad Q8400 and Pentium D 955 EE are enumerated here.

VT-x+no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q8400 and Pentium D 955 EE. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1, DDR2, DDR3DDR1, DDR2, DDR3

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardOn certain motherboards (Chipset feature)no data

Peripherals

Specifications and connection of peripherals supported by Core 2 Quad Q8400 and Pentium D 955 EE.

PCIe version2.0no data

Pros & cons summary


Physical cores 4 2
Chip lithography 45 nm 65 nm
Power consumption (TDP) 95 Watt 130 Watt

Core 2 Quad Q8400 has 100% more physical cores, a 44.4% more advanced lithography process, and 36.8% lower power consumption.

We couldn't decide between Core 2 Quad Q8400 and Pentium D 955 EE. We've got no test results to judge.


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Intel Core 2 Quad Q8400
Core 2 Quad Q8400
Intel Pentium D 955 EE
Pentium D 955 EE

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