IntelBX80662I56400
IntelBX80671I76800K

4 Cores, 4 Threads @2.7GHz, Skylake.
Release date: Q3 2015.

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

Real World Speed
Performance profile from 221,653 user samples
171,457 User Benchmarks
Best Bench: 71% Base clock 2.7 GHz, turbo 3.1 GHz (avg)
Worst Bench: 39% Base clock 2.7 GHz, turbo 0.5 GHz (avg)
Poor: 39% Great: 71%
SPEED RANK: 566th / 1442
Gaming
Gaming 61%
Destroyer
Desktop
Desktop 66%
Battle cruiser
Workstation
Workstation 45%
Yacht
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
60.8 % 80.9 % Much faster effective speed.
+33%
Memory
Avg. Memory Latency
75.2 Pts 86 Pts Lower memory latency.
+14%
1-Core
Avg. Single Core Speed
84.6 Pts 107 Pts Faster single-core speed.
+26%
2-Core
Avg. Dual Core Speed
166 Pts 214 Pts Faster dual-core speed.
+29%
4-Core
Avg. Quad Core Speed
267 Pts 408 Pts Much faster quad-core speed.
+53%
8-Core
Avg. Octa Core Speed
286 Pts 660 Pts Hugely faster octa-core speed.
+131%
Memory
OC Memory Latency
86.8 Pts 94.9 Pts Slightly lower OC memory latency.
+9%
1-Core
OC Single Core Speed
96.1 Pts 124 Pts Faster OC single-core speed.
+29%
2-Core
OC Dual Core Speed
189 Pts 248 Pts Much faster OC dual-core speed.
+31%
4-Core
OC Quad Core Speed
335 Pts 483 Pts Much faster OC quad-core speed.
+44%
8-Core
OC Octa Core Speed
344 Pts 770 Pts Hugely faster OC octa-core speed.
+124%
Market Share
Based on 67,779,180 CPUs tested
Market Share
Market Share (trailing 30 days)
0.37 % Hugely higher market share.
+640%
0.05 %
Value
Value For Money
85.9 % 106 % Better value.
+24%
User Rating
UBM User Rating
55 % 65 % More popular.
+18%
Price
Price (score)
$79 Cheaper.
+23%
$103
Age
Newest
103 Months 94 Months Slightly more recent.
+9%
TDP
Thermal Design Power (TDP)
65 Watts Much more energy efficient.
+54%
140 Watts
Cores
CPU Processing Cores
4 cores 6 cores Much higher core count.
+50%
Threads
CPU Processing Threads
4 threads 12 threads Hugely higher thread count.
+200%
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
2.7 GHz 3.4 GHz Faster base frequency.
+26%
Turbo Clock
Turbo Clock Speed
3.3 GHz 3.8 GHz Faster turbo frequency.
+15%
64-Core
OC Multi Core Speed
346 Pts 956 Pts Hugely faster OC 64-core speed.
+176%
64-Core
Avg. Multi Core Speed
288 Pts 827 Pts Hugely faster 64-core speed.
+187%
Series
CPU Architecture
Skylake Broadwell-E
Socket
Motherboard Socket
FCLGA1151 LGA2011-V3
Graphics
Integrated Graphics
HD 530 None
Launch Date
Launch Date
Q3'15 Q2'16
Cache
Cache
6 MB SmartCache 15 MB
Recommended Price
Recommended Customer Price
$182.00 - $187.00 N/A
Max Turbo Frequency
Max Turbo Frequency
3.3 GHz 3.8 GHz
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 128 GB
Memory Types
Memory Types
DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V DDR4 2400/2133
Memory Channels
Max # of Memory Channels
2 4
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 530 None
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
No Yes
Max # of PCI Express Lanes
Max # of PCI Express Lanes
16 28

More specs » More specs »
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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]

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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

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  • - 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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 Frequently Asked Questions

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