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Differences What are the advantages of each

Front view of Intel Core2 Duo E8135

Reasons to consider the
Intel Core2 Duo E8135

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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
Much more l2 cache per core 3 MB/core vs 0.25 MB/core 12x more l2 cache per core
Front view of Intel Core i5 2500S

Reasons to consider the
Intel Core i5 2500S

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Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better geekbench 3 Multi-Core score 7,339 vs 2,603 More than 2.8x better geekbench 3 Multi-Core score
Significantly better PassMark (Single core) score 1,798 vs 1,076 More than 65% better PassMark (Single core) score
More cores 4 vs 2 Twice as many cores; run more applications at once
Better overclocked clock speed (Air) 3.33 GHz vs 2.6 GHz Around 30% better overclocked clock speed (Air)
More threads 4 vs 2 Twice as many threads
Better overclocked clock speed (Water) 2.8 GHz vs 2.4 GHz More than 15% better overclocked clock speed (Water)

Benchmarks Real world tests of Core2 Duo E8135 vs Core i5 2500S

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 E8135
107,000 MB/s
Core i5 2500S
2,430,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core2 Duo E8135  vs
Core i5 2500S 
Clock speed 2.67 GHz 2.7 GHz
Cores Dual core Quad core
Socket type
P
LGA 1155

features

Has a NX bit Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES

details

Core2 Duo E8135  vs
Core i5 2500S 
Threads 2 4
L2 cache 6 MB 1 MB
L2 cache per core 3 MB/core 0.25 MB/core
Manufacture process 45 nm 32 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 2.6 GHz 3.33 GHz
Overclocked clock speed (Water) 2.4 GHz 2.8 GHz
Overclocked clock speed (Air) 2.6 GHz 3.33 GHz

power consumption

Typical power consumption N/A 52.81W
Intel Core2 Duo E8135
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Intel Core i5 2500S
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