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IntelBX80648I75820K
AMD100-100000051WOF
▲ 669,879 ▼

6 Cores, 12 Threads @3.3GHz, Haswell-E.
Release date: Q3 2014.

VS
▲ 601,618 ▼

16 Cores, 32 Threads @3.5GHz, Zen2.
Release date: Q4 2019.

Effective Speed 
+16%
Real World Speed
Performance profile from 151,864 user samples
Benchmark your CPU here
101,694 User Benchmarks
Best Bench: 88% Base clock 3.3 GHz, turbo 4.6 GHz (avg)
Worst Bench: 68% Base clock 3.3 GHz, turbo 1.2 GHz (avg)
Poor: 68% Great: 88%
SPEED RANK: 281st / 1442
Gaming
Gaming 77%
Battleship
Desktop
Desktop 78%
Battleship
Workstation
Workstation 67%
Battle cruiser
50,170 User Benchmarks
Best Bench: 97% Base clock 3.5 GHz, turbo 4.25 GHz (avg)
Worst Bench: 79% Base clock 3.5 GHz, turbo 0.5 GHz (avg)
Poor: 79% Great: 97%
SPEED RANK: 139th / 1442
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 89%
Aircraft carrier
Workstation
Workstation 114%
UFO
Effective Speed
Effective CPU Speed 		76.8 % 89.3 % Faster effective speed.
+16%
Average Score 
+41%
Memory
Avg. Memory Latency 		86.4 Pts Lower memory latency.
+12% 		77.2 Pts
1-Core
Avg. Single Core Speed 		96.3 Pts 139 Pts Much faster single-core speed.
+44%
2-Core
Avg. Dual Core Speed 		192 Pts 276 Pts Much faster dual-core speed.
+44%
4-Core
Avg. Quad Core Speed 		364 Pts 543 Pts Much faster quad-core speed.
+49%
8-Core
Avg. Octa Core Speed 		594 Pts 1074 Pts Hugely faster octa-core speed.
+81%
Overclocked Score 
+25%
Memory
OC Memory Latency 		94 Pts Slightly lower OC memory latency.
+7% 		88.2 Pts
1-Core
OC Single Core Speed 		120 Pts 150 Pts Faster OC single-core speed.
+25%
2-Core
OC Dual Core Speed 		237 Pts 297 Pts Faster OC dual-core speed.
+25%
4-Core
OC Quad Core Speed 		462 Pts 580 Pts Faster OC quad-core speed.
+26%
8-Core
OC Octa Core Speed 		737 Pts 1146 Pts Much faster OC octa-core speed.
+55%
Value & Sentiment 
+102%
Market Share
Based on 67,806,360 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.2 % Hugely higher market share.
+300% 		0.05 %
Value
Value For Money 		94.7 % Better value.
+24% 		76.2 %
User Rating
UBM User Rating 		66 % Slightly more popular.
+10% 		60 %
Price
Price (score) 		$130 Much cheaper.
+74% 		$495
Nice To Haves 
+111%
Age
Newest 		117 Months 53 Months Much more recent.
+55%
TDP
Thermal Design Power (TDP) 		140 Watts 105 Watts More energy efficient.
+25%
Cores
CPU Processing Cores 		6 cores 16 cores Hugely higher core count.
+167%
Threads
CPU Processing Threads 		12 threads 32 threads Hugely higher thread count.
+167%
Lithography
Manufacturing process 		22 nm 7 nm Much newer manufacturing.
+68%
Base Clock
Base Clock Speed 		3.3 GHz 3.5 GHz Slightly faster base frequency.
+6%
Turbo Clock
Turbo Clock Speed 		3.6 GHz 4.7 GHz Much faster turbo frequency.
+31%
64-Core
OC Multi Core Speed 		933 Pts 2965 Pts Hugely faster OC 64-core speed.
+218%
64-Core
Avg. Multi Core Speed 		748 Pts 2737 Pts Hugely faster 64-core speed.
+266%
Specifications 
Series
CPU Architecture 		Haswell-E Zen2
Socket
Motherboard Socket 		LGA2011-V3 AM4
Graphics
Integrated Graphics 		None None
Conclusion 
Average Bench 76.8%
Average Bench 89.3%
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The Intel Core i7-5820K is the cheapest of three (5820K,5930K,5960X) new Haswell-E prosumer/enthusiast processors. The 5820K sports six physical cores and twelve threads which allow for enormous processing throughput. Unfortunately Intel have somewhat handicapped the 5820K by setting its base clock at just 3.3 GHz, 0.7GHz lower than the class leading 4790K. Comparing the 4790K and 5820K shows that the cheaper i7-4790K is significantly faster at both single and dual threaded workloads. The additional two cores found in the 5820K are not relevant to general computing and as such the 5820K probably makes a better server rather than consumer proposition. The Haswell-E X99 architecture also requires DDR4 RAM which is currently far more expensive than DDR3. Overall the 5820K is a very expensive option and probably best avoided by the vast majority of consumers.  [Sep '14 CPUPro]

MORE DETAILS

The 3950X is the 16 core, 32 thread Ryzen 3 flagship. Although this CPU offers server levels of multi-core encoding performance, there are relatively few, if any, consumer use cases for the 3950X. Streamers are better off using dedicated hardware such as NVENC which encodes far more efficiently than any CPU. Gamers are better served by low latency gaming CPUs such as the 9600K for a fraction of the price. For example, comparing these two PCs shows that the 3950X build offers less than half the gaming performance. The only rational reason to put a 3950X in a gaming build is in exchange for sponsorship money. [Feb '21 CPUPro]

MORE DETAILS

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Processor Rankings (Price vs Performance) May 2024 CPU Rankings

We calculate effective speed which measures real world performance for typical users. Effective speed is adjusted by current prices to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top CPUs. [CPUPro]

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Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
How Fast Is Your CPU? (Bench your build) Size up your PC in less than a minute

Welcome to our PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best value for money upgrades.

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How it works

  • - Download and run UserBenchmark
  • - CPU tests include: integer, floating and string
  • - GPU tests include: six 3D game simulations
  • - Drive tests include: read, write, sustained write and mixed IO
  • - RAM tests include: single/multi core bandwidth and latency
  • - SkillBench (space shooter) tests user input accuracy
  • - Reports are generated and presented on userbenchmark.com
  • - Identify the strongest components in your PC
  • - See speed test results from other users
  • - Compare your components to the current market leaders
  • - Explore your best upgrade options with a virtual PC build
  • - Compare your in-game FPS to other users with your hardware

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 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $254Nvidia RTX 4060 $300Crucial MX500 250GB $39
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $163Nvidia RTX 4070 $539Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $31Corsair Vengeance LPX DDR4 3000 C15 2x8GB $37SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $64G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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