CPUBoss Review Our evaluation of 5775C vs 4790K among all CPUs

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

Sky Diver and Cloud Gate

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?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

No winner declared

Too close to call

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VS

Differences What are the advantages of each

Front view of Intel Core i7 5775C

Reasons to consider the
Intel Core i7 5775C

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Significantly newer manufacturing process 14 nm vs 22 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better CompuBench 1.5 video composition score 27.4 fps vs 12.09 fps More than 2.2x better CompuBench 1.5 video composition score
Lower typical power consumption 52.81W vs 71.5W More than 25% lower typical power consumption
Newer Apr, 2015 vs Apr, 2014 Release date a year later
Lower annual home energy cost 15.66 $/year vs 21.2 $/year More than 25% lower annual home energy cost
Lower annual commercial energy cost 56.94 $/year vs 77.09 $/year More than 25% lower annual commercial energy cost
Front view of Intel Core i7 4790K

Reasons to consider the
Intel Core i7 4790K

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Much better performance per dollar 3.69 pt/$ vs 0.99 pt/$ Around 3.8x better performance per dollar
Higher clock speed 4 GHz vs 3.3 GHz More than 20% higher clock speed
Higher turbo clock speed 4.4 GHz vs 3.7 GHz Around 20% higher turbo clock speed
Much better performance per watt 11.41 pt/W vs 5.56 pt/W More than 2x better performance per watt
Significantly better 3DMark06 CPU score 79 vs 71.8 More than 10% better 3DMark06 CPU score
Better turbo clock speed 1,250 MHz vs 1,150 MHz Around 10% better turbo clock speed
Slightly more l3 cache 8 MB vs 6 MB Around 35% more l3 cache; more data can be stored in the l3 cache for quick access later
Better geekbench 3 Multi-Core score 15,490 vs 14,294.5 Around 10% better geekbench 3 Multi-Core score
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Better PassMark (Single core) score 2,530 vs 2,247 Around 15% better PassMark (Single core) score
Higher GPU clock speed 350 MHz vs 300 MHz More than 15% higher GPU clock speed
Better overclocked clock speed (Air) 4.63 GHz vs 4.29 GHz Around 10% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 4.8 GHz vs 4.17 GHz Around 15% better overclocked clock speed (Water)

Benchmarks Real world tests of Core i7 5775C vs 4790K

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Core i7 5775C
55.7 mHash/s
Core i7 4790K
16.1 mHash/s

CompuBench 1.5 (Face detection)

Core i7 5775C
36.55 mPixels/s
Core i7 4790K
18.33 mPixels/s

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

Core i7 5775C
2.72 fps
Core i7 4790K
1.79 fps

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core i7 5775C
14,294.5
Core i7 4790K
15,490

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i7 5775C
5,320 MB/s
Core i7 4790K
5,140,000 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 5775C  vs
4790K 
Clock speed 3.3 GHz 4 GHz
Turbo clock speed 3.7 GHz 4.4 GHz
Cores Quad core Quad core
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
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 65W 88W
Annual home energy cost 15.66 $/year 21.2 $/year
Annual commercial energy cost 56.94 $/year 77.09 $/year
Performance per watt 5.56 pt/W 11.41 pt/W
Typical power consumption 52.81W 71.5W

bus

Architecture DMI 2.0 DMI 2.0
Number of links 0 0
Transfer rate 5,000 MT/s 5,000 MT/s

details

Core i7 5775C  vs
4790K 
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 6 MB 8 MB
L3 cache per core 1.5 MB/core 2 MB/core
Manufacture process 14 nm 22 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 4.29 GHz 4.63 GHz
Overclocked clock speed (Water) 4.17 GHz 4.8 GHz
Overclocked clock speed (Air) 4.29 GHz 4.63 GHz

integrated graphics

GPU GPU GPU
Label Intel® Iris™ Pro Graphics 6200 Intel® HD Graphics 4600
Number of displays supported 3 3
GPU clock speed 300 MHz 350 MHz
Turbo clock speed 1,150 MHz 1,250 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3L-1600
DDR3-1600
DDR3-1333
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 25,600 MB/s 25,600 MB/s
Maximum memory size 32,768 MB 32,768 MB
Intel Core i7 5775C
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Intel Core i7 4790K
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