CPUBoss Review Our evaluation of E8400 vs 84 among all 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

Sky Diver and Cloud Gate

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?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

5.1

CPUBoss Score

Combination of all six facets

Winner
AMD Turion X2 Ultra 84 

CPUBoss recommends the AMD Turion X2 Ultra 84  based on its power consumption.

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VS

Differences What are the advantages of each

Front view of Intel Core2 Duo E8400

Reasons to consider the
Intel Core2 Duo E8400

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Much more l2 cache 6 MB vs 2 MB 3x more l2 cache; more data can be stored in the l2 cache for quick access later
Much better geekbench 2 (32-bit) score 2,826 vs 1,635 Around 75% better geekbench 2 (32-bit) score
Much newer manufacturing process 45 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Higher clock speed 3 GHz vs 2.3 GHz More than 30% higher clock speed
Much more l2 cache per core 3 MB/core vs 1 MB/core 3x more l2 cache per core
Much better overclocked clock speed (Air) 4.22 GHz vs 2.31 GHz Around 85% better overclocked clock speed (Air)
Better geekbench 3 single core score 1,625 vs 856 Around 90% better geekbench 3 single core score
Much better overclocked clock speed (Water) 4.23 GHz vs 2.3 GHz Around 85% better overclocked clock speed (Water)
Front view of AMD Turion X2 Ultra 84

Reasons to consider the
AMD Turion X2 Ultra 84

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Significantly lower typical power consumption 28.44W vs 52.81W More than 45% lower typical power consumption
Much higher Maximum operating temperature 100 °C vs 72.4 °C Around 40% higher Maximum operating temperature
Significantly lower annual home energy cost 8.43 $/year vs 15.66 $/year More than 45% lower annual home energy cost
Significantly lower annual commercial energy cost 30.66 $/year vs 56.94 $/year More than 45% lower annual commercial energy cost

Benchmarks Real world tests of Core2 Duo E8400 vs Turion X2 Ultra 84

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

Core2 Duo E8400
128,000 MB/s
Turion X2 Ultra 84
62,700 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

Specifications Full list of technical specs

summary

Core2 Duo E8400  vs
Turion X2 Ultra 84 
Clock speed 3 GHz 2.3 GHz
Cores Dual core Dual core
Socket type
LGA 775
S1

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
SSE4.1
3DNow!
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 65W 35W
Annual home energy cost 15.66 $/year 8.43 $/year
Annual commercial energy cost 56.94 $/year 30.66 $/year
Performance per watt 1.83 pt/W 1.95 pt/W
Typical power consumption 52.81W 28.44W

details

Core2 Duo E8400  vs
Turion X2 Ultra 84 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 6 MB 2 MB
L2 cache per core 3 MB/core 1 MB/core
Manufacture process 45 nm 65 nm
Max CPUs 1 1
Operating temperature Unknown - 72.4°C Unknown - 100°C

overclocking

Overclocked clock speed 4.22 GHz 2.31 GHz
Overclocked clock speed (Water) 4.23 GHz 2.3 GHz
Overclocked clock speed (Air) 4.22 GHz 2.31 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

bus

Clock speed 1,333 MHz 400 MHz
Intel Core2 Duo E8400
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AMD Turion X2 Ultra 84
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