IntelBX80662I56400
IntelBX80673I77820X

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

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

Real World Speed
Performance profile from 199,981 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
28,524 User Benchmarks
Best Bench: 92% Base clock 3.6 GHz, turbo 4.7 GHz (avg)
Worst Bench: 70% Base clock 3.6 GHz, turbo 3.85 GHz (avg)
Poor: 70% Great: 92%
SPEED RANK: 233rd / 1442
Gaming
Gaming 80%
Aircraft carrier
Desktop
Desktop 81%
Aircraft carrier
Workstation
Workstation 81%
Aircraft carrier
Effective Speed
Effective CPU Speed
60.8 % 80.1 % Much faster effective speed.
+32%
Memory
Avg. Memory Latency
75.2 Pts 75.5 Pts +0%
1-Core
Avg. Single Core Speed
84.6 Pts 121 Pts Much faster single-core speed.
+43%
2-Core
Avg. Dual Core Speed
166 Pts 238 Pts Much faster dual-core speed.
+43%
4-Core
Avg. Quad Core Speed
267 Pts 455 Pts Much faster quad-core speed.
+70%
8-Core
Avg. Octa Core Speed
286 Pts 822 Pts Hugely faster octa-core speed.
+187%
Memory
OC Memory Latency
86.8 Pts +2% 85 Pts
1-Core
OC Single Core Speed
96.1 Pts 138 Pts Much faster OC single-core speed.
+44%
2-Core
OC Dual Core Speed
189 Pts 272 Pts Much faster OC dual-core speed.
+44%
4-Core
OC Quad Core Speed
335 Pts 533 Pts Much faster OC quad-core speed.
+59%
8-Core
OC Octa Core Speed
344 Pts 976 Pts Hugely faster OC octa-core speed.
+184%
Market Share
Based on 67,793,123 CPUs tested
Market Share
Market Share (trailing 30 days)
0.36 % Hugely higher market share.
+800%
0.04 %
Value
Value For Money
85.9 % Better value.
+16%
73.8 %
User Rating
UBM User Rating
55 % 63 % More popular.
+15%
Price
Price (score)
$79 Much cheaper.
+79%
$375
Age
Newest
104 Months 82 Months More recent.
+21%
TDP
Thermal Design Power (TDP)
65 Watts Much more energy efficient.
+54%
140 Watts
Cores
CPU Processing Cores
4 cores 8 cores Hugely higher core count.
+100%
Threads
CPU Processing Threads
4 threads 16 threads Hugely higher thread count.
+300%
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
2.7 GHz 3.6 GHz Much faster base frequency.
+33%
Turbo Clock
Turbo Clock Speed
3.3 GHz 4.5 GHz Much faster turbo frequency.
+36%
64-Core
OC Multi Core Speed
346 Pts 1445 Pts Hugely faster OC 64-core speed.
+318%
64-Core
Avg. Multi Core Speed
288 Pts 1263 Pts Hugely faster 64-core speed.
+339%
Series
CPU Architecture
Skylake Skylake-X
Socket
Motherboard Socket
FCLGA1151 LGA2066
Graphics
Integrated Graphics
HD 530 None
Launch Date
Launch Date
Q3'15 Q2'17
Cache
Cache
6 MB SmartCache 11 MB L3
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0 SSE4.1/4.2, AVX 2.0, AVX-512
Recommended Price
Recommended Customer Price
$182.00 - $187.00 $589.00 - $599.00
Max Turbo Frequency
Max Turbo Frequency
3.3 GHz 4.30 GHz
Thermal Solution Specification
Thermal Solution Specification
PCG 2015C (65W) PCG 2017X
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 DDR4-2666
Memory Channels
Max # of Memory Channels
2 4
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 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]

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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.
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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
  • - See speed test results from other users
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  • - Explore your best upgrade options with a virtual PC build
  • - Compare your in-game FPS to other users with your hardware

 Frequently Asked Questions

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