Intel Core2 Duo E8400
Intel Core 2 Quad Q8400
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Intel Core2 Duo E8400 vs Intel Core 2 Quad Q8400. Specifications, performance, tests

Overall score
star star star star star
Released
Q1/2008
Intel Core2 Duo E8400
Intel Core2 Duo E8400
Released
Q2/2009
Overall score
star star star star star
Intel Core 2 Quad Q8400
Intel Core 2 Quad Q8400

What's the best choice Intel Core2 Duo E8400 or Intel Core 2 Quad Q8400? Which processor is faster?

We have prepared a comparison to help you choose the best processor. Compare their specifications and benchmarks.

Intel Core2 Duo E8400 has a maximum frequency of 3.00 GHz. 2 Cores. Power consumption of 65 W. Released in Q1/2008.

Intel Core 2 Quad Q8400 has a maximum frequency of 2.66 GHz. 4 Cores. Power consumption of 95 W. Released in Q2/2009.

Differences

  • Place in the overall ranking

    (based on several benchmarks)

    1790 left arrow score
  • Higher clock speed

    Around 11% better clock speed

    3.00 GHz left arrow 2.66 GHz
  • Performance per watt

    times less performance per watt

    65 W left arrow 95 W

Positions in all rankings

Common positions Intel Core2 Duo E8400 CPU in popular benchmarks, for comparison with other models.

  • Geekbench 5, 64bit (Single-Core)
    1170 place
  • Geekbench 5, 64bit (Multi-Core)
    1364 place
  • Estimated results for PassMark CPU Mark
    1327 place
  • Place in the overall ranking

    (based on several benchmarks)

    1782 left arrow score
  • More number of cores

    About 2 times more cores

    4 left arrow 2

Positions in all rankings

Common positions Intel Core 2 Quad Q8400 CPU in popular benchmarks, for comparison with other models.

  • Geekbench 5, 64bit (Single-Core)
    1276 place
  • Geekbench 5, 64bit (Multi-Core)
    1261 place
  • Estimated results for PassMark CPU Mark
    1211 place

Specifications

Technical data
Intel Core2 Duo E8400 Intel Core2 Duo E8400
Intel Core 2 Quad Q8400 Intel Core 2 Quad Q8400
CPU family and group

Background information about the processors being compared, series, generation and market segment.

  • Segment
    Desktop left arrow Desktop
  • Family
    Intel Core2 Duo left arrow Intel Core2 Duo
  • Generation
    2 left arrow 2
  • CPU group
    Intel Core 2 Duo E7000/E8000 left arrow Intel Core 2 Quad Q8000/Q9000
  • Predecessor
    No left arrow No
  • Successor
    No left arrow No
CPU Technical specs

Basic parameters such as number of cores, number of threads, base and turbo frequency, and cache size. These parameters indirectly tell about the speed of the processor, the higher they are the better.

  • Frequency
    3.00 GHz left arrow 2.66 GHz
  • CPU Cores
    2 left arrow 4
  • Turbo (1 Core)
    No left arrow No
  • CPU Threads
    2 left arrow 4
  • Turbo (2 Cores)
    No turbo left arrow No turbo
  • Hyperthreading
    No left arrow No
  • Overclocking
    Yes left arrow No
  • Core architecture
    normal left arrow normal
Memory specs & PCI

Types, channel quantity of RAM supported by Intel Core 2 Quad Q8400 and Intel Core2 Duo E8400. Depending on the motherboards, higher or lower memory frequencies may be supported.

  • Memory type
    DDR2-1066 / DDR3-1333 left arrow DDR2-800 / DDR3-1066
  • Max. Memory
    16 GB left arrow 16 GB
  • ECC
    No left arrow No
  • Memory channels
    2 left arrow 2
  • PCIe
    No data left arrow No data
Encryption
  • AES-NI
    No left arrow No
Thermal Management

Compare the TDP requirements of TDP Intel Core2 Duo E8400 and Intel Core 2 Quad Q8400 to select a cooling system. Note, the TDP value refers to thermal watts, not electrical watts.

  • TDP (PL1)
    65 W left arrow 95 W
  • TDP up
    No left arrow No
  • TDP (PL2)
    No left arrow No
  • TDP down
    No left arrow No
  • Tjunction max.
    80 °C left arrow 90 °C
Technologies and extensions

Architecture, interfaces, additional instructions supported by Intel Core2 Duo E8400 and Intel Core2 Duo E8400, virtual machine technologies and process technology.

  • Instruction set (ISA)
    x86-64 (64 bit) left arrow x86-64 (64 bit)
  • Virtualization
    VT-x left arrow VT-x, VT-d
  • ISA extensions
    MMX, SSE, SSE2, SSE3, SSE 4.1 left arrow MMX, SSE2, SSE3, SSE4.1
  • L2-Cache
    6.00 MB left arrow 4.00 MB
  • L3-Cache
    No left arrow No
  • Architecture
    Wolfdale left arrow Yorkfield
  • Technology
    45 nm left arrow 45 nm
  • Socket
    LGA 775 left arrow LGA 775
  • Release date
    Q1/2008 left arrow Q2/2009

Benchmarks

Performance tests CPUs

Based on the results of several benchmarks, you can more accurately estimate the difference in performance between Intel Core2 Duo E8400 and Intel Core 2 Quad Q8400.

Compare the synthetic test values and choose the best processor!

Geekbench 5, 64bit (Single-Core)
Geekbench 5 SC is a popular cross-platform performance test for desktop or mobile processors that uses system memory intensively
473
Intel Core2 Duo E8400
369
Intel Core 2 Quad Q8400
Geekbench 5, 64bit (Multi-Core)
Geekbench 5 MC is a popular cross-platform performance test for desktop or mobile processors that uses system memory intensively
841
Intel Core2 Duo E8400
1155
Intel Core 2 Quad Q8400
Estimated results for PassMark CPU Mark
PassMark is a test suite that performs complex mathematical calculations to determine CPU performance on file compression, encryption and physics-related tasks
1129
Intel Core2 Duo E8400
2029
Intel Core 2 Quad Q8400

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