IntelBX80684I99900K
IntelBX80673I77820X

8 Cores, 16 Threads @3.6GHz, Coffee Lake.
Release date: Q4 2018.

8 Cores, 16 Threads @3.6GHz, Skylake-X.
Release date: Q2 2017.

Real World Speed
Performance profile from 329,927 user samples
309,064 User Benchmarks
Best Bench: 105% Base clock 3.6 GHz, turbo 5.3 GHz (avg)
Worst Bench: 86% Base clock 3.6 GHz, turbo 1.5 GHz (avg)
Poor: 86% Great: 105%
SPEED RANK: 10th / 1276
Gaming
Gaming 98%
Nuclear submarine
Desktop
Desktop 99%
Nuclear submarine
Workstation
Workstation 98%
Nuclear submarine
20,863 User Benchmarks
Best Bench: 94% Base clock 3.6 GHz, turbo 4.3 GHz (avg)
Worst Bench: 72% Base clock 3.6 GHz, turbo 3.95 GHz (avg)
Poor: 72% Great: 94%
SPEED RANK: 102nd / 1276
Gaming
Gaming 83%
Aircraft carrier
Desktop
Desktop 84%
Aircraft carrier
Workstation
Workstation 83%
Aircraft carrier
Effective Speed
Effective CPU Speed
98.2 % Faster effective speed.
+19%
82.5 %
Memory
Avg. Memory Latency
93.2 Pts Lower memory latency.
+22%
76.7 Pts
1-Core
Avg. Single Core Mixed Speed
143 Pts Faster single-core speed.
+14%
125 Pts
2-Core
Avg. Dual Core Mixed Speed
282 Pts Faster dual-core speed.
+14%
247 Pts
4-Core
Avg. Quad Core Mixed Speed
553 Pts Faster quad-core speed.
+17%
474 Pts
8-Core
Avg. Octa Core Mixed Speed
1015 Pts Faster octa-core speed.
+17%
869 Pts
Memory
OC Memory Latency
97.6 Pts Lower OC memory latency.
+11%
87.6 Pts
1-Core
OC Single Core Mixed Speed
154 Pts Slightly faster OC single-core speed.
+10%
140 Pts
2-Core
OC Dual Core Mixed Speed
307 Pts Slightly faster OC dual-core speed.
+10%
280 Pts
4-Core
OC Quad Core Mixed Speed
610 Pts Slightly faster OC quad-core speed.
+10%
556 Pts
8-Core
OC Octa Core Mixed Speed
1185 Pts Faster OC octa-core speed.
+11%
1066 Pts
Market Share
Based on 38,490,053 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.4 % Insanely higher market share.
+2,233%
0.06 %
Value
Value For Money
90.2 % Better value.
+28%
70.2 %
User Rating
UBM User Rating
82 % Much more popular.
+32%
62 %
Price
Price (score)
$379 Cheaper.
+24%
$500
Age
Newest
26 Months Much more recent.
+38%
42 Months
TDP
Thermal Design Power (TDP)
95 Watts Much more energy efficient.
+32%
140 Watts
Cores
CPU Processing Cores
8 cores 8 cores
Threads
CPU Processing Threads
16 threads 16 threads
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
3.6 GHz 3.6 GHz
Turbo Clock
Turbo Clock Speed
5 GHz Faster turbo frequency.
+11%
4.5 GHz
64-Core
OC Multi Core Mixed Speed
1620 Pts Faster OC 64-core speed.
+10%
1467 Pts
64-Core
Avg. Multi Core Mixed Speed
1460 Pts Faster 64-core speed.
+15%
1269 Pts
Series
CPU Architecture
Coffee Lake Skylake-X
Socket
Motherboard Socket
FCLGA1151 LGA2066
Graphics
Integrated Graphics
UHD 630 None
Launch Date
Launch Date
Q4'18 Q2'17
Cache
Cache
16 MB SmartCache 11 MB L3
Instruction Set Extensions
Instruction Set Extensions
Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 SSE4.1/4.2, AVX 2.0, AVX-512
Recommended Price
Recommended Customer Price
$488.00 - $499.00 $589.00 - $599.00
Max Turbo Frequency
Max Turbo Frequency
5.00 GHz 4.30 GHz
Thermal Solution Specification
Thermal Solution Specification
PCG 2015D (130W) PCG 2017X
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 128 GB
Memory Channels
Max # of Memory Channels
2 4
Max # of PCI Express Lanes
Max # of PCI Express Lanes
16 28

More specs » More specs »
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The Intel i9-9900K is an 8 core, 16 thread, unlocked 9th generation Coffee Lake processor. It has a base / boost clocks of 3.6 / 4.7 GHz and a single-core boost of 5.0 GHz (the highest frequency achieved yet from this class of Intel CPU). It features 16 MB of cache, a 95W TDP and Intel UHD 630 graphics. The 9900K is compatible with the new Z390 chipset, and subject to a BIOS update, is also compatible with the older Z370 chipset. Aimed at users who do not wish to compromise, the i9-9900K offers the best gaming and desktop experience available at any price. Heavy workstation users should consider the Ryzen 9 3900X which is similarly priced. Comparing the overclocked 3900X shows that it is just 10% worse for gaming and desktop (sub octa-core) but around 40% better for 64-core computations. Gamers should consider the 9700K which offers identical overclocked gaming performance at a $100 USD discount. [Oct '18 CPUPro]

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The I7-7820X is the second of three new Skylake-X HEDT (high end desktop processors) released by Intel as part of their core X series (the others being the flagship 10-core i9-7900X and the 6-core i7-7800X). The 7820X is an 8-core, 16-thread CPU which will amply satisfy all but the heaviest of multi-threaded use cases. The 7820X requires a relatively expensive X299 (Basin Falls) motherboard, which costs upwards of $250. The 7820X is listed at $599 which is about $200 more than AMD's current flagship 8-core, 16 thread Ryzen 7 1800X. In addition to better IPC, the 7820X is higher clocked with base and max boost clocks of 3.6/4.5 GHz respectively, compared to 3.6G/4.0 GHz for the Ryzen 7 1800X. The additional $200 (50%) buys you around 20% more performance in both single and multi core workloads. Intel have also released several Kabylake-X HEDT CPUs: the 4-thread i5-7640X and the 8-thread i7-7740X and will shortly release of even higher spec Skylake-X processors. It's probably wise to hold off purchasing until the eagerly anticipated 16-core, 32-thread Ryzen Threadripper CPUs are launched later this month. [Jul '17 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) January 2021 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.

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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.
  • - 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.

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