CPUBoss Review Our evaluation of 975 vs 4770K among desktop CPUs (over 75W)

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

Fire Strike

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?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

7.7

CPUBoss Score

Combination of all six facets

Winner
Intel Core i7 975 

CPUBoss recommends the Intel Core i7 975  based on its .

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VS

Differences What are the advantages of each

Front view of Intel Core i7 975

Reasons to consider the
Intel Core i7 975

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CPUBoss is not aware of any important advantages of the 975 Extreme Edition vs the 4770K.

Front view of Intel Core i7 4770K

Reasons to consider the
Intel Core i7 4770K

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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 Core i7 975 vs 4770K

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core i7 975
9,214
Core i7 4770K
14,184

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i7 975
152,250 MB/s
Core i7 4770K
4,810,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Core i7 975
9,229
Core i7 4770K
14,351

GeekBench (64-bit) Data courtesy Primate Labs

Core i7 975
9,894
Core i7 4770K
15,778

GeekBench

Core i7 975
11,512
Core i7 4770K
18,498

PassMark Data courtesy Passmark

Core i7 975
6,173
Core i7 4770K
10,016

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 975  vs
4770K 
Clock speed 3.33 GHz 3.5 GHz
Turbo clock speed 3.6 GHz 3.9 GHz
Cores Quad core Quad core
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
F16C
MMX
SSE4
AVX
SSE3
EM64T
SSE
SSE4.1
FMA3
SSE4.2
Supplemental SSE3
AES
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 130W 84W
Annual home energy cost 82.69 $/year 20.24 $/year
Annual commercial energy cost 211.12 $/year 73.58 $/year
Performance per watt 0.93 pt/W 11.31 pt/W
Typical power consumption 212W 68.25W

bus

Architecture QPI DMI 2.0
Number of links 1 0
Transfer rate 6,400 MT/s 5,000 MT/s

details

Core i7 975  vs
4770K 
Architecture x86-64 x86-64
Threads 8 8
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 8 MB 8 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 45 nm 22 nm
Max CPUs 1 1
Operating temperature 5 - 67.9°C Unknown - 72.72°C

overclocking

Overclock popularity 8 205
Overclocked clock speed 4.46 GHz 4.48 GHz
Overclocked clock speed (Water) 4.45 GHz 4.55 GHz
Overclocked clock speed (Air) 4.46 GHz 4.48 GHz

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics 4600
Number of displays supported N/A 3
GPU clock speed N/A 350 MHz
Turbo clock speed N/A 1,250 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3L-1600
DDR3-1333
DDR3-1066
DDR3-800
Channels Triple Channel Dual Channel
Supports ECC No No
Maximum bandwidth 25,599.99 MB/s 25,600 MB/s
Maximum memory size 24,000 MB 32,768 MB
Intel Core i7 975
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Intel Core i7 4770K
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