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Intel
Group Average(9 Highest-Voted)
▲ 563,719 ▼

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

VS
About
Effective Speed 
+264%
Real World Speed
Performance profile from 46,815 user samples
Benchmark your CPU here
46,815 User Benchmarks
Best Bench: 27% Base clock 3.2 GHz, turbo 3.15 GHz (avg)
Worst Bench: 17% Base clock 3 GHz, turbo 1.35 GHz (avg)
Poor: 17% Great: 27%
SPEED RANK: 823rd / 1206
Gaming
Gaming 25%
Surfboard
Desktop
Desktop 31%
Sail boat
Workstation
Workstation 11%
Tree trunk
Effective Speed
Effective CPU Speed 		24.7 % 89.8 % Hugely faster effective speed.
+264%
Average User Bench 
+371%
1-Core
Avg. Single Core Mixed Speed 		50.6 Pts 132 Pts Hugely faster single-core speed.
+160%
2-Core
Avg. Dual Core Mixed Speed 		95.3 Pts 260 Pts Hugely faster dual-core speed.
+173%
4-Core
Avg. Quad Core Mixed Speed 		96.7 Pts 504 Pts Hugely faster quad-core speed.
+421%
8-Core
Avg. Octa Core Mixed Speed 		98.2 Pts 813 Pts Hugely faster octa-core speed.
+728%
Overclocked Bench 
+366%
1-Core
OC Single Core Mixed Speed 		54.7 Pts 142 Pts Hugely faster OC single-core speed.
+159%
2-Core
OC Dual Core Mixed Speed 		109 Pts 281 Pts Hugely faster OC dual-core speed.
+158%
4-Core
OC Quad Core Mixed Speed 		109 Pts 555 Pts Hugely faster OC quad-core speed.
+409%
8-Core
OC Octa Core Mixed Speed 		109 Pts 914 Pts Hugely faster OC octa-core speed.
+739%
Value & Sentiment 
+81%
Market Share
Based on 22,502,669 CPUs tested.
See market share leaders
User Rating
UBM User Rating 		56 % 161 % Hugely more popular.
+188%
Market Share
Market Share (trailing 30 days) 		0.21 % 1.59 % Hugely higher market share.
+658%
Price
Price (score) 		$34 Hugely cheaper.
+637% 		252 USD
Value
Value For Money 		43.9 % 95.4 % Hugely better value.
+117%
Nice To Haves 
+431%
TDP
Thermal Design Power (TDP) 		130 Watts 81.7 Watts Much more energy efficient.
+59%
Cores
CPU Processing Cores 		2 cores 6.44 cores Hugely higher core count.
+222%
Threads
CPU Processing Threads 		2 threads 10.2 threads Hugely higher thread count.
+411%
Lithography
Manufacturing process 		45 nm 12.2 nm Hugely newer manufacturing.
+268%
Base Clock
Base Clock Speed 		3 GHz 3.54 GHz Faster base frequency.
+18%
Turbo Clock
Turbo Clock Speed 		3 GHz 4.48 GHz Much faster turbo frequency.
+49%
64-Core
OC Multi Core Mixed Speed 		109 Pts 1,094 Pts Hugely faster OC 64-core speed.
+904%
64-Core
Avg. Multi Core Mixed Speed 		99.5 Pts 995 Pts Hugely faster 64-core speed.
+900%
Age
Newest 		143 Months 12.4 Months Insanely more recent.
+1,049%
Specifications 
Series
CPU Architecture 		Core   —
Socket
Motherboard Socket 		LGA775   —
Graphics
Integrated Graphics 		None   —
Conclusion 
Average Bench 24.7%
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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]

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Processor Rankings (Price vs Performance) December 2019 CPU Rankings.

We calculate effective speed which measures real world performance for typical gamers and desktop 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]

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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.

UserBenchmark of the month

Gaming Desktop Workstation

How it works

  • - Download and run UserBenchMark.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - 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 userbenchmark.com.
  • - 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.

 Frequently Asked Questions

Processors FAQ
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 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-9400F $150Nvidia GTX 1660S (Super) $244Crucial MX500 250GB $45
Intel Core i5-9600K $200AMD RX 590 $180Samsung 850 Evo 120GB $150
Intel Core i7-9700K $360Nvidia RTX 2060 $324Samsung 850 Pro 512GB $230
HDDRAMUSB
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $65SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $58SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $613SanDisk Extreme 16GB $24
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