IntelBX80684I99900K
IntelBX80671I76800K

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

6 Cores, 12 Threads @3.4GHz, Broadwell-E.
Release date: Q2 2016.

Real World Speed
Performance profile from 404,419 user samples
354,223 User Benchmarks
Best Bench: 104% Base clock 3.6 GHz, turbo 5.2 GHz (avg)
Worst Bench: 89% Base clock 3.6 GHz, turbo 1.3 GHz (avg)
Poor: 89% Great: 104%
SPEED RANK: 90th / 1442
Gaming
Gaming 98%
Nuclear submarine
Desktop
Desktop 98%
Nuclear submarine
Workstation
Workstation 97%
Nuclear submarine
50,196 User Benchmarks
Best Bench: 90% Base clock 3.4 GHz, turbo 4.1 GHz (avg)
Worst Bench: 71% Base clock 3.4 GHz, turbo 1.2 GHz (avg)
Poor: 71% Great: 90%
SPEED RANK: 221st / 1442
Gaming
Gaming 81%
Aircraft carrier
Desktop
Desktop 82%
Aircraft carrier
Workstation
Workstation 71%
Battleship
Effective Speed
Effective CPU Speed
97.9 % Faster effective speed.
+21%
80.9 %
Memory
Avg. Memory Latency
93.1 Pts Slightly lower memory latency.
+8%
86 Pts
1-Core
Avg. Single Core Speed
142 Pts Much faster single-core speed.
+33%
107 Pts
2-Core
Avg. Dual Core Speed
281 Pts Much faster dual-core speed.
+31%
214 Pts
4-Core
Avg. Quad Core Speed
551 Pts Much faster quad-core speed.
+35%
408 Pts
8-Core
Avg. Octa Core Speed
981 Pts Much faster octa-core speed.
+49%
660 Pts
Memory
OC Memory Latency
97.2 Pts +2% 94.9 Pts
1-Core
OC Single Core Speed
153 Pts Faster OC single-core speed.
+23%
124 Pts
2-Core
OC Dual Core Speed
305 Pts Faster OC dual-core speed.
+23%
248 Pts
4-Core
OC Quad Core Speed
604 Pts Faster OC quad-core speed.
+25%
483 Pts
8-Core
OC Octa Core Speed
1116 Pts Much faster OC octa-core speed.
+45%
770 Pts
Market Share
Based on 67,698,195 CPUs tested
Market Share
Market Share (trailing 30 days)
1.37 % Insanely higher market share.
+1,612%
0.08 %
Value
Value For Money
87.9 % 106 % Better value.
+21%
User Rating
UBM User Rating
86 % Much more popular.
+32%
65 %
Price
Price (score)
$412 $103 Much cheaper.
+75%
Age
Newest
65 Months Much more recent.
+31%
94 Months
TDP
Thermal Design Power (TDP)
95 Watts Much more energy efficient.
+32%
140 Watts
Cores
CPU Processing Cores
8 cores Much higher core count.
+33%
6 cores
Threads
CPU Processing Threads
16 threads Much higher thread count.
+33%
12 threads
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
3.6 GHz Slightly faster base frequency.
+6%
3.4 GHz
Turbo Clock
Turbo Clock Speed
5 GHz Much faster turbo frequency.
+32%
3.8 GHz
64-Core
OC Multi Core Speed
1590 Pts Much faster OC 64-core speed.
+66%
956 Pts
64-Core
Avg. Multi Core Speed
1451 Pts Much faster 64-core speed.
+75%
827 Pts
Series
CPU Architecture
Coffee Lake Broadwell-E
Socket
Motherboard Socket
FCLGA1151 LGA2011-V3
Graphics
Integrated Graphics
UHD 630 None
Launch Date
Launch Date
Q4'18 Q2'16
Cache
Cache
16 MB SmartCache 15 MB
Recommended Price
Recommended Customer Price
$488.00 - $499.00 N/A
Max Turbo Frequency
Max Turbo Frequency
5.00 GHz 3.8 GHz
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 128 GB
Memory Types
Memory Types
DDR4-2666 DDR4 2400/2133
Memory Channels
Max # of Memory Channels
2 4
Processor Graphics
Processor Graphics ‡
Intel® UHD Graphics 630 None
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
Yes No
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]

MORE DETAILS

The Core i7-6800K is the weakest of four new 14 nm Broadwell-E prosumer CPUs. This model has six cores with base and turbo frequencies of 3.4 and 3.8 GHz, a TDP of 140 watts and 28 PCIe 3.0 lanes. The 6800K closely matches, and supersedes, the very popular Haswell-E 5820K. Because of its MSRP of around $500, this CPU only makes sense for niche use cases which include graphics design, video production or multi GPU gaming. Comparing the 6800K and 6700K shows that for typical desktop use, at stock clocks, the 6800K actually lags the 6700K by around 10%. This is because desktop computing largely depends on single core performance and the Skylake i7-6700K is both clocked higher (Base clock 4.0 GHz vs 3.4 GHz) and has higher IPC due to its one generation lead over the 6800K. If the 6800K proves to be a capable overclocker then it may challenge the 6700K on a range of core-heavy use cases, time will tell. [Jun '16 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) April 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.
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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
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  • - Explore your best upgrade options with a virtual PC build
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 Frequently Asked Questions

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HDDRAMUSB
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