CPUBoss Review Our evaluation of 805 vs E8400 among desktop CPUs

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Fire Strike

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

3.8

CPUBoss Score

Combination of all six facets

Winner
Intel Core2 Duo E8400 

CPUBoss recommends the Intel Core2 Duo E8400  based on its performance, single-core performance and overclocking.

See full details

Cast your vote Do you agree or disagree with CPUBoss?

Thanks for adding your opinion. Follow us on Facebook to stay up to date with the latest news!
VS

Differences What are the advantages of each

Front view of Intel Pentium D 805

Reasons to consider the
Intel Pentium D 805

Report a correction

CPUBoss is not aware of any important advantages of the Pentium D 805 vs the Core2 Duo E8400.

Front view of Intel Core2 Duo E8400

Reasons to consider the
Intel Core2 Duo E8400

Report a correction
Much newer manufacturing process 45 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better PassMark score 2,160 vs 534 More than 4x better PassMark score
Much better PassMark (Single core) score 1,251 vs 620 More than 2x better PassMark (Single core) score
Much better geekbench 2 (32-bit) score 2,826 vs 1,085 More than 2.5x better geekbench 2 (32-bit) score
Higher clock speed 3 GHz vs 2.66 GHz Around 15% higher clock speed
Supports dynamic frequency scaling Yes vs No Somewhat common; Allows for maximum performance when needed, while conserving power and minimizing heat production when not needed
Much better performance per watt 1.83 pt/W vs 0.71 pt/W More than 2.5x better performance per watt
Much better overclocked clock speed (Air) 4.22 GHz vs 3.5 GHz More than 20% better overclocked clock speed (Air)
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Much lower typical power consumption 52.81W vs 77.19W More than 30% lower typical power consumption
Much higher Maximum operating temperature 72.4 °C vs 64.1 °C Around 15% higher Maximum operating temperature
Much better overclocked clock speed (Water) 4.23 GHz vs 2.66 GHz Around 60% better overclocked clock speed (Water)
Significantly lower annual home energy cost 15.66 $/year vs 22.89 $/year More than 30% lower annual home energy cost
Significantly lower annual commercial energy cost 56.94 $/year vs 83.22 $/year More than 30% lower annual commercial energy cost
Newer Jan, 2008 vs Jan, 2005 Release date over 3 years later

Benchmarks Real world tests of Pentium D 805 vs Core2 Duo E8400

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Pentium D 805
95,000 MB/s
Core2 Duo E8400
128,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Pentium D 805  vs
Core2 Duo E8400 
Clock speed 2.66 GHz 3 GHz
Cores Dual core Dual core
Socket type
LGA 775

features

Has a NX bit Yes Yes
Supports trusted computing No Yes
Has virtualization support No Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
SSE4.1
Supplemental SSE3
Supports dynamic frequency scaling No Yes

power consumption

TDP 95W 65W
Annual home energy cost 22.89 $/year 15.66 $/year
Annual commercial energy cost 83.22 $/year 56.94 $/year
Performance per watt 0.71 pt/W 1.83 pt/W
Typical power consumption 77.19W 52.81W

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 533 MHz 1,333 MHz

details

Pentium D 805  vs
Core2 Duo E8400 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 2 MB 6 MB
L2 cache per core 1 MB/core 3 MB/core
Manufacture process 90 nm 45 nm
Transistor count 230,000,000 410,000,000
Max CPUs 1 1
Clock multiplier 20 9
Voltage range 1.2 - 1.4V 0.85 - 1.36V
Operating temperature Unknown - 64.1°C Unknown - 72.4°C

overclocking

Overclocked clock speed 3.5 GHz 4.22 GHz
Overclocked clock speed (Water) 2.66 GHz 4.23 GHz
Overclocked clock speed (Air) 3.5 GHz 4.22 GHz

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A
Intel Pentium D 805
Report a correction
Intel Core2 Duo E8400
Report a correction

Read more

Comments

comments powered by Disqus