IntelBX80648I75820K
AMD100-100000023BOX
Real World Speed
Performance profile from 192,101 user samples
77,442 User Benchmarks
Best Bench: 94% Base clock 3.3 GHz, turbo 4.6 GHz (avg)
Worst Bench: 73% Base clock 3.3 GHz, turbo 3.9 GHz (avg)
Poor: 73% Great: 94%
SPEED RANK: 99th / 1257
Gaming
Gaming 83%
Aircraft carrier
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 73%
Battleship
114,659 User Benchmarks
Best Bench: 95% Base clock 3.8 GHz, turbo 4.45 GHz (avg)
Worst Bench: 80% Base clock 3.8 GHz, turbo 1.1 GHz (avg)
Poor: 80% Great: 95%
SPEED RANK: 45th / 1257
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 89%
Aircraft carrier
Workstation
Workstation 103%
UFO
Effective Speed
Effective CPU Speed
82.8 % 88.6 % Slightly faster effective speed.
+7%
Memory
Avg. Memory Latency
89.2 Pts Lower memory latency.
+13%
78.6 Pts
1-Core
Avg. Single Core Mixed Speed
106 Pts 136 Pts Faster single-core speed.
+28%
2-Core
Avg. Dual Core Mixed Speed
212 Pts 270 Pts Faster dual-core speed.
+27%
4-Core
Avg. Quad Core Mixed Speed
412 Pts 528 Pts Faster quad-core speed.
+28%
8-Core
Avg. Octa Core Mixed Speed
664 Pts 1031 Pts Much faster octa-core speed.
+55%
Memory
OC Memory Latency
95.7 Pts Slightly lower OC memory latency.
+8%
88.7 Pts
1-Core
OC Single Core Mixed Speed
129 Pts 145 Pts Faster OC single-core speed.
+12%
2-Core
OC Dual Core Mixed Speed
257 Pts 287 Pts Faster OC dual-core speed.
+12%
4-Core
OC Quad Core Mixed Speed
511 Pts 563 Pts Faster OC quad-core speed.
+10%
8-Core
OC Octa Core Mixed Speed
817 Pts 1105 Pts Much faster OC octa-core speed.
+35%
Market Share
Based on 31,454,052 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.18 % 1.65 % Hugely higher market share.
+817%
Value
Value For Money
90.9 % Better value.
+16%
78.6 %
User Rating
UBM User Rating
94 % 130 % Much more popular.
+38%
Price
Price (score)
$198 Much cheaper.
+54%
$430
Age
Newest
72 Months 12 Months Hugely more recent.
+83%
TDP
Thermal Design Power (TDP)
140 Watts 105 Watts More energy efficient.
+25%
Cores
CPU Processing Cores
6 cores 12 cores Hugely higher core count.
+100%
Threads
CPU Processing Threads
12 threads 24 threads Hugely higher thread count.
+100%
Lithography
Manufacturing process
22 nm 7 nm Much newer manufacturing.
+68%
Base Clock
Base Clock Speed
3.3 GHz 3.8 GHz Faster base frequency.
+15%
Turbo Clock
Turbo Clock Speed
3.6 GHz 4.6 GHz Faster turbo frequency.
+28%
64-Core
OC Multi Core Mixed Speed
1012 Pts 2294 Pts Hugely faster OC 64-core speed.
+127%
64-Core
Avg. Multi Core Mixed Speed
830 Pts 2119 Pts Hugely faster 64-core speed.
+155%
Series
CPU Architecture
Haswell-E Zen2
Socket
Motherboard Socket
LGA2011-V3 AM4
Graphics
Integrated Graphics
None None
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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]

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Early Q3 of 2019 welcomes the Ryzen 9 3900X, AMD’s current top of the range, third generation Ryzen flagship which raises the bar for 64-core processing on desktop CPUs. This is AMD’s first Ryzen 9 processor and it is a 12-core, 24-thread CPU based on their latest 7nm Zen 2 microarchitecture. The 3900X has a boost/base clock of 3.8/4.6 GHz, 64 MB of L3 cache (double the L3 on the rest of 3000 series), support for 3200 MHz DDR4 system memory and a TDP of 105W. All this, plus a Wraith Prism cooler, at a very reasonable launch price of $499 USD. By comparison, Intel’s 8-core, 16 thread i9-9900K is available for $479 USD (and requires a cooler: $30+ USD). Benchmarks illustrate that the overclocked 3900X leads by a whopping 41% for 64-core processing but that the 9900K maintains a 10% lead for gaming, desktop and other sub octa-core tasks. The 3900 memory controller is significantly improved over previous Ryzen iterations and shows a better write throughput than the lower spec 3000 models, but it still shows relatively high latency which can impact gaming. In terms of 64-core performance at this price point, there is no threat from Intel. The only real competitor is the upcoming (Q4, 2019) 16-core, 32-thread 3950X ($749 USD). The Ryzen 9 3900X is compatible with the new PCIe 4.0 enabled X570 motherboard via an AM4 socket, as well as 400 and 300 series motherboards. [Jul '19 CPUPro]

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Processor Rankings (Price vs Performance) August 2020 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 freeware 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 upgrades.

UserBenchmark of the month

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.
  • - 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.
  • - Share your opinion by voting.

 Frequently Asked Questions

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The Best.
CPUGPUSSD
Intel Core i5-9600K $195Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $45
Intel Core i5-9400F $156Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $340Nvidia RTX 2070S (Super) $510Samsung 860 Evo 250GB $50
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $69SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $69SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $681SanDisk Extreme 16GB $24
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