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Differences What are the advantages of each

Front view of Intel Core2 QX9650

Reasons to consider the
Intel Core2 QX9650

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CPUBoss is not aware of any important advantages of the Core2 QX9650 vs the Core i5 2500K.

Front view of Intel Core i5 2500K

Reasons to consider the
Intel Core i5 2500K

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required

Benchmarks Real world tests of Core2 QX9650 vs Core i5 2500K

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 QX9650
136,300 MB/s
Core i5 2500K
2,530,000 MB/s

3D Mark 11 (Physics)

Cinebench R11.5

Cinebench R11.5 (Single Core)

Reviews Word on the street

Core2 QX9650  vs Core i5 2500K 

8.0
9.0

8.0
9.0

Overall

7.9 Out of 10
9.4 Out of 10

Specifications Full list of technical specs

summary

Core2 QX9650  vs
Core i5 2500K 
Clock speed 3 GHz 3.3 GHz
Cores Quad core Quad core
Socket type
LGA 775
LGA 1155
Is unlocked Yes Yes

features

Has a NX bit Yes Yes
Supports trusted computing No No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
EM64T
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 130W 95W
Annual home energy cost 31.32 $/year 41.29 $/year
Annual commercial energy cost 113.88 $/year 110.03 $/year
Performance per watt 1.36 pt/W 6.79 pt/W
Typical power consumption 105.63W 112.55W

details

Core2 QX9650  vs
Core i5 2500K 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 12 MB 1 MB
L2 cache per core 3 MB/core 0.25 MB/core
Manufacture process 45 nm 32 nm
Transistor count 820,000,000 1,160,000,000
Max CPUs 1 1
Clock multiplier 9 33
Voltage range 0.85 - 1.36V 1.2 - 1.5V
Operating temperature Unknown - 64.5°C 5 - 72.6°C

overclocking

Overclocked clock speed 4.2 GHz 4.98 GHz
Overclocked clock speed (Water) 4.28 GHz 4.88 GHz
Overclocked clock speed (Air) 4.2 GHz 4.98 GHz

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics 3000
Latest DirectX N/A 10.1
Number of displays supported N/A 2
GPU clock speed N/A 850 MHz
Turbo clock speed N/A 1,100 MHz
3DMark06 N/A 5,275

bus

Architecture FSB DMI
Number of links 1 1
Intel Core2 QX9650
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Intel Core i5 2500K
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