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Differences What are the advantages of each

Front view of Intel Core i7 950

Reasons to consider the
Intel Core i7 950

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CPUBoss is not aware of any important advantages of the Core i7 950 vs the Core i5 2500K.

Front view of Intel Core i5 2500K

Reasons to consider the
Intel Core i5 2500K

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required

Benchmarks Real world tests of Core i7 950 vs 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

Core i7 950
137,000 MB/s
Core i5 2500K
2,530,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Core i7 950
8,066
Core i5 2500K
10,319

GeekBench (64-bit) Data courtesy Primate Labs

Core i7 950
8,868
Core i5 2500K
11,186

GeekBench

Core i7 950
9,995
Core i5 2500K
13,624

PassMark Data courtesy Passmark

PassMark (Single Core)

Reviews Word on the street

Core i7 950  vs i5 2500K 

8.8
9.8
Boots up faster, daily things are faster, gaming results in more FPS and it clocks 10x better and higher.
Core i5 2500K

Specifications Full list of technical specs

summary

Core i7 950  vs
i5 2500K 
Clock speed 3.06 GHz 3.3 GHz
Turbo clock speed 3.33 GHz 3.7 GHz
Cores Quad core Quad core
Socket type
LGA 1366
LGA 1155
Is unlocked No 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

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 QPI DMI
Number of links 1 1
Transfer rate 4,800 MT/s 5,000 MT/s

details

Core i7 950  vs
i5 2500K 
Architecture x86-64 x86-64
Threads 8 4
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 8 MB 6 MB
L3 cache per core 2 MB/core 1.5 MB/core
Manufacture process 45 nm 32 nm
Transistor count 731,000,000 1,160,000,000
Max CPUs 1 1
Clock multiplier 23 33
Voltage range 0.8 - 1.38V 1.2 - 1.5V
Operating temperature Unknown - 67.9°C 5 - 72.6°C

overclocking

Overclock popularity 285 3,179
Overclock review score 4.5 5
Overclocked clock speed 4.26 GHz 4.99 GHz
Overclocked clock speed (Water) 4.09 GHz 4.79 GHz
PassMark (Overclocked) 3,815.5 5,433.6
Overclocked clock speed (Air) 4.26 GHz 4.99 GHz

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 1.55 pt/W 6.8 pt/W
Typical power consumption 105.63W 112.55W

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3-800
DDR3
Channels Triple Channel Dual Channel
Supports ECC No No
Maximum bandwidth 25,599.99 MB/s 21,333.32 MB/s
Maximum memory size 24,576 MB 32,768 MB
Intel Core i7 950
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Intel Core i5 2500K
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