Intel Core i7 975 

Released June, 2009
  • 3.33 GHz
  • Quad core
  • Unlocked
5.3 Out of 10

Running the POV-Ray Real-Time Raytracing benchmark at nearly 30FPS is amazing as I remember the first time we ran this benchmark and got under 4FPS!
by Legit Reviews (Jun, 2009)
For those that are interested on December 9, 2008 Photodex Proshow Gold 4.0 was released and it is much faster.
by Legit Reviews (Jun, 2009)

CPUBoss Review Our evaluation of the Intel Core i7 975 among desktop CPUs (over 75W)

Performance

Benchmark performance using all cores

Core i7 975
6.3
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

Core i7 975
6.1
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Core i7 975
0.0
Fire Strike

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

Core i7 975
0.0
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Core i7 975
5.4
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Core i7 975
n.d.
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

5.3

CPUBoss Score

Combination of all six facets

Core i7 975
5.3

Benchmarks Real world tests of the Intel Core i7 975

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core i7 975
9,214
Core i7 4790K
15,490
Core i7 920
7,014

GeekBench 3 (Single core) Data courtesy Primate Labs

Core i7 975
2,324
Core i7 920
1,959

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i7 975
152,250 MB/s
Core i7 4790K
5,140,000 MB/s
Core i7 920
143,700 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Core i7 975
9,229
Core i7 4790K
15,465
Core i7 920
7,125

GeekBench (64-bit) Data courtesy Primate Labs

Core i7 975
9,894
Core i7 4790K
16,653
Core i7 920
7,791

GeekBench

Core i7 975
11,512
Core i7 4790K
16,653
Core i7 920
9,242

PassMark Data courtesy Passmark

Core i7 975
6,276
Core i7 4790K
11,244
Core i7 920
4,994

PassMark (Single Core)

Core i7 975
1,459
Core i7 920
1,158

Specifications Full list of technical specs

summary

Clock speed 3.33 GHz
Turbo clock speed 3.6 GHz
Cores Quad core
Socket type LGA 1366
Is unlocked Yes

features

Has a NX bit Yes
Supports trusted computing No
Has virtualization support Yes
Instruction set extensions
  1. MMX
  2. SSE
  3. SSE2
  4. SSE3
  5. SSE4.1
  6. SSE4.2
  7. Supplemental SSE3
Supports dynamic frequency scaling Yes

power consumption

TDP 130W
Annual home energy cost 82.69 $/year
Annual commercial energy cost 211.12 $/year
Performance per watt 1.09 pt/W
Idle power consumption 154W
Peak power consumption 241W
Typical power consumption 212W

bus

Architecture QPI
Data rate 25,600 MB/s
Transfer rate 6,400 MT/s
Clock speed 3,200 MHz

details

Architecture x86-64
Threads 8 threads
L2 cache 1 MB
L2 cache per core 0.25 MB/core
L3 cache 8 MB
L3 cache per core 2 MB/core
Manufacture process 45 nm
Transistor count 731,000,000
Max CPUs 1
Clock multiplier 25
Voltage range 0.8 - 1.38V
Operating temperature 5 - 67.9°C

overclocking

Overclock popularity 8
Overclocked clock speed 4.47 GHz
Overclocked clock speed (Water) 4.39 GHz
Overclocked clock speed (Air) 4.47 GHz

integrated graphics

GPU None

memory controller

Memory controller Built-in
Memory type
  1. DDR3-1066
  2. DDR3-800
Channels Triple Channel
Supports ECC No
Maximum bandwidth 25,599.99 MB/s
Maximum memory size 24,000 MB
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