2 Cores, 2 Threads @3.0GHz, Core.
Release date: Q1 2008.

2 Cores, @2.93 GHz, Wolfdale.
Release date ≤ Q4 2013.

Real World Speed
Performance profile from 90,022 user samples
58,097 User Benchmarks
Best Bench: 49% Base clock 4.5 GHz, turbo 4.25 GHz (avg)
Worst Bench: 32% Base clock 3 GHz, turbo 2.8 GHz (avg)
Poor: 32% Great: 49%
SPEED RANK: 865th / 1276
Gaming 44%
Speed boat
Desktop 51%
Workstation 29%
31,925 User Benchmarks
Best Bench: 47% Base clock 2.95 GHz, turbo 1.65 GHz (avg)
Worst Bench: 31% Base clock 2.95 GHz, turbo 2.9 GHz (avg)
Poor: 31% Great: 47%
SPEED RANK: 918th / 1276
Gaming 41%
Speed boat
Desktop 48%
Workstation 28%
Effective Speed
Effective CPU Speed
43.6 % Slightly faster effective speed.
41.2 %
Avg. Memory Latency
71.1 Pts Slightly lower memory latency.
66.9 Pts
Avg. Single Core Mixed Speed
50.4 Pts +3% 48.7 Pts
Avg. Dual Core Mixed Speed
95.5 Pts +5% 91.2 Pts
Avg. Quad Core Mixed Speed
96.7 Pts +5% 92.4 Pts
Avg. Octa Core Mixed Speed
98.8 Pts Slightly faster octa-core speed.
93.9 Pts
OC Memory Latency
79.3 Pts +4% 76 Pts
OC Single Core Mixed Speed
54.7 Pts +2% 53.5 Pts
OC Dual Core Mixed Speed
110 Pts +4% 106 Pts
OC Quad Core Mixed Speed
110 Pts +4% 106 Pts
OC Octa Core Mixed Speed
110 Pts +3% 107 Pts
Market Share
Based on 36,026,190 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.13 % Much higher market share.
0.09 %
Value For Money
61.7 % Better value.
53.3 %
User Rating
UBM User Rating
56 % +2% 55 %
Price (score)
$79 Cheaper.
154 Months 83+ Months Much more recent.
OC Multi Core Mixed Speed
109 Pts +2% 107 Pts
Avg. Multi Core Mixed Speed
99 Pts Slightly faster 64-core speed.
94.1 Pts
Launch Date
Launch Date
Q1'08 Q1'09
6 MB L2 3 MB L2
Embedded Options Available
Embedded Options Available
Yes No
Recommended Price
Recommended Customer Price
$149.00 - $179.00 $125.00
Bus Speed
Bus Speed
1333 MHz FSB 1066 MHz FSB
Processing Die Size
Processing Die Size
107 mm2 82 mm2
# of Processing Die Transistors
# of Processing Die Transistors
410 million 228 million
Virtualization Tech (VT-x)
Intel® Virtualization Technology (VT-x) ‡
Yes See Ordering Info
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
Yes No

More specs » More specs »

The Intel Core 2 Duo E8400 is amongst the fastest of the Core 2 Duo range of now nearly ten year old CPUs. The E8400 is included in our group tests simply as a reference point due to its huge success back in its day. Running at a clock speed of 3.0 GHz the E8400 has an effective speed of 52 which is 85% slower than its modern day counterparts. The relative lack of performance is especially noticeable in the area of multi-core processing as a consequence of the E8400's relatively few two cores. Anyone considering an upgrade needn't hesitate as modern CPUs are not only orders of magnitude faster but also considerably more energy efficient and feature packed. [Oct '14 CPUPro]


Processor Rankings (Price vs Performance) November 2020 CPU Rankings.

We calculate effective speed which measures real world performance for typical users. Effective speed is adjusted by current prices to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top CPUs. [CPUPro]


Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
How Fast Is Your CPU? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

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How it works

  • - Download and run UserBenchMark.
  • - CPU tests include: integer, floating and string.
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  • - Drive tests include: read, write, sustained write and mixed IO.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.

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