CPUBoss Review Our evaluation of 5820K vs 4790 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

9.2

CPUBoss Score

Combination of all six facets

Winner
Intel Core i7 5820K 

CPUBoss recommends the Intel Core i7 5820K  based on its .

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VS

Differences What are the advantages of each

Front view of Intel Core i7 5820K

Reasons to consider the
Intel Core i7 5820K

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Front view of Intel Core i7 4790

Reasons to consider the
Intel Core i7 4790

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing

Benchmarks Real world tests of Core i7 5820K vs 4790

CompuBench 1.5 (Face detection)

Core i7 5820K
6.74 mPixels/s
Core i7 4790
16.68 mPixels/s

CompuBench 1.5 (Video composition) Data courtesy CompuBench

Core i7 5820K
3.71 fps
Core i7 4790
12.13 fps

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core i7 5820K
19,546
Core i7 4790
13,718

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i7 5820K
4,050,000 MB/s
Core i7 4790
4,570,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Core i7 5820K
20,764
Core i7 4790
13,457

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 5820K  vs
4790 
Clock speed 3.3 GHz 3.6 GHz
Turbo clock speed 3.6 GHz 4 GHz
Cores Hexa core Quad core
Is unlocked Yes No

features

Has a NX bit Yes Yes
Supports trusted computing No Yes
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 140W 84W
Annual home energy cost 33.73 $/year 20.24 $/year
Annual commercial energy cost 122.64 $/year 73.58 $/year
Performance per watt 10.81 pt/W 10.77 pt/W
Typical power consumption 113.75W 68.25W

bus

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

details

Core i7 5820K  vs
4790 
Architecture x86-64 x86-64
Threads 12 8
L3 cache 15 MB 8 MB
L3 cache per core 2.5 MB/core 2 MB/core
Manufacture process 22 nm 22 nm
Max CPUs 1 1

overclocking

PassMark (Overclocked) 5,572.2 6,039.5

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 1,200 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3L-1600
DDR3-1333
DDR4-2133
DDR4-1600
DDR4-1333
Channels Quad Channel Dual Channel
Supports ECC No No
Maximum memory size 65,536 MB 32,768 MB
Intel Core i7 5820K
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Intel Core i7 4790
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