Intel Core2 Duo E8400 

Released January, 2008
  • 3 GHz
  • Dual core
6 Out of 10

The Intel Core 2 Duo E8400 is a middle level processor which runs on the LGA 775 chipset. With a speed of 3.0 GHz running on two cores, it has a 6MB cache which offers fast access to the programs that you need the most. It’s also built to overclock, and can reach 3.8 GHz without the need of overvolting. It’s also more energy efficient than its Quad Core counterparts, with a TDP of only 65W. Thus, this processor is suitable for budget minded gamers and enthusiasts alike. For extreme value without breaking the bank, the new and improved dual core is here: the Core 2 Duo E8400.
Explore 4 desktops with the Intel Core2 Duo E8400

CPUBoss Review Our evaluation of the Intel Core2 Duo E8400 among desktop CPUs (45 to 75W)

Performance

Benchmark performance using all cores
Core2 Duo E8400
5.2
Core i3 3220
6.5
Core2 Duo E7500
5.1
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance
Core2 Duo E8400
5.0
Core i3 3220
6.7
Core2 Duo E7500
4.9
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics
Core2 Duo E8400
0.0
Core i3 3220
5.1
Core2 Duo E7500
0.0
Fire Strike

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing
Core2 Duo E8400
0.0
Core i3 3220
n.d.
Core2 Duo E7500
0.0
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?
Core2 Duo E8400
4.9
Core i3 3220
8.1
Core2 Duo E7500
4.8
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?
Core2 Duo E8400
9.1
Core i3 3220
6.5
Core2 Duo E7500
6.5
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more
6

CPUBoss Score

Combination of all six facets
Core2 Duo E8400
6.0
Core i3 3220
7.4
Core2 Duo E7500
5.3

Benchmarks Real world tests of the Intel Core2 Duo E8400

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Core2 Duo E8400
2.41 mHash/s
Core i3 3220
n.d.
Core2 Duo E7500
n.d.

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core2 Duo E8400
2,982
Core i3 3220
5,399
Core2 Duo E7500
2,850

GeekBench 3 (Single core) Data courtesy Primate Labs

Core2 Duo E8400
1,625
Core i3 3220
2,501
Core2 Duo E7500
1,553

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core2 Duo E8400
128,000 MB/s
Core i3 3220
173,000 MB/s
Core2 Duo E7500
124,700 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Core2 Duo E8400
2,826
Core i3 3220
5,351
Core2 Duo E7500
2,673

GeekBench (64-bit) Data courtesy Primate Labs

Core2 Duo E8400
3,092
Core i3 3220
5,707
Core2 Duo E7500
2,986

PassMark Data courtesy Passmark

Core2 Duo E8400
2,163
Core i3 3220
4,229
Core2 Duo E7500
1,879

PassMark (Single Core)

Core2 Duo E8400
1,252
Core i3 3220
1,764
Core2 Duo E7500
1,204

Reviews Word on the street for the Intel Core2 Duo E8400

9.1
read review
I get 4.5 out of my chip, I'm sure i could go higher if the motherboard and memory could keep it stable.

Specifications Full list of technical specs

summary

Clock speed 3 GHz
Cores Dual core
Socket type LGA 775

features

Has a NX bit Yes
Supports trusted computing Yes
Has virtualization support Yes
Instruction set extensions
  1. Supplemental SSE3
  2. SSE2
  3. SSE
  4. MMX
  5. SSE3
  6. SSE4.1
Supports dynamic frequency scaling Yes

integrated graphics

GPU None

details

Architecture x86-64
Threads 2 threads
L2 cache 6 MB
L2 cache per core 3 MB/core
Manufacture process 45 nm
Transistor count 410,000,000
Max CPUs 1
Clock multiplier 9
Voltage range 0.85 - 1.36V
Operating temperature Unknown - 72.4°C

overclocking

Overclock popularity 125
Overclock review score 4.5
Overclocked clock speed 4.23 GHz
Overclocked clock speed (Water) 4.15 GHz
Overclocked clock speed (Air) 4.23 GHz

power consumption

TDP 65W
Annual home energy cost 15.66 $/year
Annual commercial energy cost 56.94 $/year
Performance per watt 1.85 pt/W
Typical power consumption 52.81W

bus

Architecture FSB
Number of links 1
Clock speed 1,333 MHz
Report a correction

Comments

Showing 7 comments.
Amadore L'acrioles (11:54 AM, March 29, 2017)
4.28 GHz on Asus P5Q Turbo. PC working in this settings couple of months, while rendering in 3D application been in progress)
Ferdswa 123 (10:21 PM, April 17, 2016)
This is my favourite CPU, it is low price - i got one for £4 on ebay! and it has amazing power for that price too
Pranavan Prana (09:17 AM, March 7, 2016)
its a notebook cpu cant be changed but its tooo late? after 1 year? but anyhow i saw ur question right now
Max Kilin (01:59 PM, September 29, 2015)
12$ 29 09 15 BEST PRICE!!!!! IN MOSCOW
Faridh Nugraha (10:26 PM, September 5, 2015)
what a motherboard to get 4.5ghz overclocking. i use MSI G41-28. OC only 3.5ghz
Dister (06:52 AM, December 14, 2014)
this is not possible. the first is for laptops and second for desktop PC
Vijay (05:13 PM, December 10, 2014)
is it possible to upgrade intel core 2 duo t5870 to intel core 2 duo e8400. Please any one kindly reply.
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