Atom E665CT vs Core 2 Quad Q8400

#ad 
Buy on Amazon
VS

Primary details

Comparing Core 2 Quad Q8400 and Atom E665CT processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking2260not rated
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorLaptop
Power efficiency1.30no data
Architecture codenameYorkfield (2007−2009)Stellarton (2010)
Release date19 April 2009 (15 years ago)22 November 2010 (13 years ago)

Detailed specifications

Core 2 Quad Q8400 and Atom E665CT 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)1 (Single-Core)
Threads42
Base clock speed2.66 GHzno data
Boost clock speed0.67 GHz1.3 GHz
Bus rate1333 MHzno data
L1 cache64 KB (per core)64 KB (per core)
L2 cache4 MB (shared)512 KB (per core)
L3 cache0 KB0 KB
Chip lithography45 nm45 nm
Die size2x 82 mm226 mm2
Maximum case temperature (TCase)71 °Cno data
Number of transistors456 million47 million
64 bit support+-
Windows 11 compatibility--
VID voltage range0.85V-1.3625Vno data

Compatibility

Information on Core 2 Quad Q8400 and Atom E665CT 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
SocketFCLGA775,LGA775Intel BGA1466
Power consumption (TDP)95 Watt7 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q8400 and Atom E665CT. You'll probably need this information if you require some particular technology.

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

Security technologies

Core 2 Quad Q8400 and Atom E665CT 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 Atom E665CT are enumerated here.

VT-x+no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q8400 and Atom E665CT. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1, DDR2, DDR3DDR2

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardOn certain motherboards (Chipset feature)Intel GMA 600

Peripherals

Specifications and connection of peripherals supported by Core 2 Quad Q8400 and Atom E665CT.

PCIe version2.0no data

Pros & cons summary


Recency 19 April 2009 22 November 2010
Physical cores 4 1
Threads 4 2
Power consumption (TDP) 95 Watt 7 Watt

Core 2 Quad Q8400 has 300% more physical cores and 100% more threads.

Atom E665CT, on the other hand, has an age advantage of 1 year, and 1257.1% lower power consumption.

We couldn't decide between Core 2 Quad Q8400 and Atom E665CT. We've got no test results to judge.

Note that Core 2 Quad Q8400 is a desktop processor while Atom E665CT is a notebook one.


Should you still have questions on choice between Core 2 Quad Q8400 and Atom E665CT, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


Intel Core 2 Quad Q8400
Core 2 Quad Q8400
Intel Atom E665CT
Atom E665CT

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


4 1330 votes

Rate Core 2 Quad Q8400 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

No user ratings yet.

Rate Atom E665CT on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about Core 2 Quad Q8400 or Atom E665CT, agree or disagree with our judgements, or report an error or mismatch.