Core i7-940XM Extreme Edition vs Core 2 Quad Q8400

Primary details

Comparing Core 2 Quad Q8400 and Core i7-940XM Extreme Edition processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking2263not rated
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorLaptop
Seriesno dataIntel Core i7EE
Power efficiency1.30no data
Architecture codenameYorkfield (2007−2009)Nehalem (2008−2010)
Release date19 April 2009 (15 years ago)5 February 2010 (14 years ago)
Launch price (MSRP)no data$1,096

Detailed specifications

Core 2 Quad Q8400 and Core i7-940XM Extreme Edition 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)4 (Quad-Core)
Threads48
Base clock speed2.66 GHzno data
Boost clock speed0.67 GHz2.13 GHz
Bus typeno dataDMI
Bus rate1333 MHz2.5 GT/s
Multiplierno data16
L1 cache64 KB (per core)256 KB
L2 cache4 MB (shared)1 MB
L3 cache0 KB8 MB
Chip lithography45 nm45 nm
Die size2x 82 mm2296 mm2
Maximum case temperature (TCase)71 °Cno data
Number of transistors456 million774 Million
64 bit support++
Windows 11 compatibility--
VID voltage range0.85V-1.3625Vno data

Compatibility

Information on Core 2 Quad Q8400 and Core i7-940XM Extreme Edition 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 configuration11 (Uniprocessor)
SocketFCLGA775,LGA775no data
Power consumption (TDP)95 Watt55 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q8400 and Core i7-940XM Extreme Edition. 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 Core i7-940XM Extreme Edition technologies aimed at improving security, for example, by protecting against hacks.

TXT-+
EDB+no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Quad Q8400 and Core i7-940XM Extreme Edition are enumerated here.

VT-dno data+
VT-x++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q8400 and Core i7-940XM Extreme Edition. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1, DDR2, DDR3DDR3-1333
Maximum memory sizeno data8 GB
Max memory channelsno data2
Maximum memory bandwidthno data21.335 GB/s

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 Core i7-940XM Extreme Edition.

PCIe version2.02.0
PCI Express lanesno data16

Pros & cons summary


Recency 19 April 2009 5 February 2010
Threads 4 8
Power consumption (TDP) 95 Watt 55 Watt

i7-940XM Extreme Edition has an age advantage of 9 months, 100% more threads, and 72.7% lower power consumption.

We couldn't decide between Core 2 Quad Q8400 and Core i7-940XM Extreme Edition. We've got no test results to judge.

Note that Core 2 Quad Q8400 is a desktop processor while Core i7-940XM Extreme Edition is a notebook one.


Should you still have questions on choice between Core 2 Quad Q8400 and Core i7-940XM Extreme Edition, ask them in Comments section, and we shall answer.

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Intel Core 2 Quad Q8400
Core 2 Quad Q8400
Intel Core i7-940XM Extreme Edition
Core i7-940XM Extreme Edition

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Community ratings

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4 1337 votes

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2.5 11 votes

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Questions & comments

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