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Differences What are the advantages of each

Front view of Intel Pentium P6300

Reasons to consider the
Intel Pentium P6300

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly lower typical power consumption 28.44W vs 52.81W More than 45% lower typical power consumption
Newer Jan, 2011 vs Jan, 2008 Release date over 3 years later
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
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 1 MB 6x more l2 cache; more data can be stored in the l2 cache for quick access later
Significantly higher clock speed 3 GHz vs 2.27 GHz More than 30% higher clock speed
Much more l2 cache per core 3 MB/core vs 0.5 MB/core 6x more l2 cache per core
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Much better overclocked clock speed (Air) 4.22 GHz vs 2.27 GHz More than 85% better overclocked clock speed (Air)
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Better PassMark (Single core) score 1,251 vs 852 More than 45% better PassMark (Single core) score
Better performance per dollar 0.67 pt/$ vs 0.48 pt/$ Around 40% better performance per dollar
Much better overclocked clock speed (Water) 4.23 GHz vs 2.27 GHz More than 85% better overclocked clock speed (Water)

Benchmarks Real world tests of Pentium P6300 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 P6300
96.1 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 P6300  vs
Core2 Duo E8400 
Clock speed 2.27 GHz 3 GHz
Cores Dual core Dual core
Socket type
rPGA 988A
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 Yes Yes

power consumption

TDP 35W 65W
Annual home energy cost 8.43 $/year 15.66 $/year
Annual commercial energy cost 30.66 $/year 56.94 $/year
Performance per watt 1.84 pt/W 1.83 pt/W
Typical power consumption 28.44W 52.81W

details

Pentium P6300  vs
Core2 Duo E8400 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 1 MB 6 MB
L2 cache per core 0.5 MB/core 3 MB/core
Manufacture process 32 nm 45 nm
Transistor count 382,000,000 410,000,000
Max CPUs 1 1
Clock multiplier 17 9

overclocking

Overclocked clock speed 2.27 GHz 4.22 GHz
Overclocked clock speed (Water) 2.27 GHz 4.23 GHz
Overclocked clock speed (Air) 2.27 GHz 4.22 GHz

integrated graphics

GPU GPU None
Label Intel® HD Graphics N/A
Number of displays supported 2 N/A
GPU clock speed 500 MHz N/A
Turbo clock speed 667 MHz N/A

bus

Architecture DMI FSB
Number of links 1 1
Intel Pentium P6300
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Intel Core2 Duo E8400
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