CPUBoss Review Our evaluation of 5820K vs 4930K 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

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 5820K

Reasons to consider the
Intel Core i7 5820K

Report a correction

CPUBoss is not aware of any important advantages of the 5820K vs the 4930K.

Front view of Intel Core i7 4930K

Reasons to consider the
Intel Core i7 4930K

Report a correction

CPUBoss is not aware of any important advantages of the 4930K vs the 5820K.

Benchmarks Real world tests of Core i7 5820K vs 4930K

CompuBench 1.5 (Face detection)

Core i7 5820K
6.74 mPixels/s
Core i7 4930K
7.61 mPixels/s

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 5820K
4,050,000 MB/s
Core i7 4930K
2,430,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 5820K  vs
4930K 
Clock speed 3.3 GHz 3.4 GHz
Turbo clock speed 3.6 GHz 3.9 GHz
Cores Hexa core Hexa 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
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 140W 130W
Annual home energy cost 33.73 $/year 31.32 $/year
Annual commercial energy cost 122.64 $/year 113.88 $/year
Performance per watt 10.8 pt/W 7.93 pt/W
Typical power consumption 113.75W 105.63W

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
4930K 
Architecture x86-64 x86-64
Threads 12 12
L3 cache 15 MB 12 MB
L3 cache per core 2.5 MB/core 2 MB/core
Manufacture process 22 nm 22 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 4.34 GHz 4.5 GHz
Overclocked clock speed (Water) 4.53 GHz 4.62 GHz
PassMark (Overclocked) 5,572.2 8,128.1
Overclocked clock speed (Air) 4.34 GHz 4.5 GHz

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1866
DDR3-1600
DDR3-1333
DDR3
DDR4-2133
DDR4-1600
DDR4-1333
Channels Quad Channel Quad Channel
Supports ECC No No
Maximum memory size 65,536 MB 65,536 MB
Intel Core i7 5820K
Report a correction
Intel Core i7 4930K
Report a correction

Comments

Showing 5 comments.
Pretty much every test on x8 vs x16 has shown a max of like 2-3% e.g. negligible/margin of error performance difference, not to mention there's no practical use for more than 2 way SLi, at 3 and 4 way you're getting ridiculous diminishing returns.
pcie x8 will affect performance by 5-10%, depends on hardware, for exp: 4 of gtx980ti SLI
Which means literally nothing since no way in hell is any modern GPU going to saturate the PCI-Express Gen 3 bus even at x8.
The thing is 5820K only supports 2 way sli at x16 x8, or 3 way sli at x8 x8 x8 but 4930K supports 2 way sli at x16 x16, or 3 way sli at x16 x8 x8
impressive, but it only makes sense since the 4930k is $550 opposed to the 5820k which is $380
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