IntelBX80673I77820X
IntelBX80671I76850K

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

6 Cores, 12 Threads @3.6GHz, Broadwell-E.
Release date: Q2 2016.

Real World Speed
Performance profile from 57,803 user samples
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: 234th / 1445
Gaming
Gaming 80%
Aircraft carrier
Desktop
Desktop 81%
Aircraft carrier
Workstation
Workstation 81%
Aircraft carrier
29,279 User Benchmarks
Best Bench: 93% Base clock 3.6 GHz, turbo 4.15 GHz (avg)
Worst Bench: 74% Base clock 3.6 GHz, turbo 3.65 GHz (avg)
Poor: 74% Great: 93%
SPEED RANK: 195th / 1445
Gaming
Gaming 84%
Aircraft carrier
Desktop
Desktop 85%
Aircraft carrier
Workstation
Workstation 75%
Battleship
Effective Speed
Effective CPU Speed
80.1 % 83.6 % +4%
Memory
Avg. Memory Latency
75.5 Pts 86.5 Pts Lower memory latency.
+15%
1-Core
Avg. Single Core Speed
121 Pts Slightly faster single-core speed.
+6%
114 Pts
2-Core
Avg. Dual Core Speed
238 Pts +5% 227 Pts
4-Core
Avg. Quad Core Speed
455 Pts +5% 435 Pts
8-Core
Avg. Octa Core Speed
822 Pts Faster octa-core speed.
+15%
713 Pts
Memory
OC Memory Latency
85 Pts 95.5 Pts Lower OC memory latency.
+12%
1-Core
OC Single Core Speed
138 Pts Slightly faster OC single-core speed.
+5%
131 Pts
2-Core
OC Dual Core Speed
272 Pts Slightly faster OC dual-core speed.
+5%
259 Pts
4-Core
OC Quad Core Speed
533 Pts Slightly faster OC quad-core speed.
+7%
500 Pts
8-Core
OC Octa Core Speed
976 Pts Faster OC octa-core speed.
+20%
812 Pts
Market Share
Based on 67,955,923 CPUs tested
Market Share
Market Share (trailing 30 days)
0.04 % Much higher market share.
+33%
0.03 %
Value
Value For Money
73.8 % 107 % Much better value.
+44%
User Rating
UBM User Rating
63 % Slightly more popular.
+7%
59 %
Price
Price (score)
$375 $115 Much cheaper.
+69%
Age
Newest
83 Months More recent.
+13%
95 Months
TDP
Thermal Design Power (TDP)
140 Watts 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 3.6 GHz
Turbo Clock
Turbo Clock Speed
4.5 GHz Faster turbo frequency.
+12%
4 GHz
64-Core
OC Multi Core Speed
1445 Pts Much faster OC 64-core speed.
+43%
1012 Pts
64-Core
Avg. Multi Core Speed
1263 Pts Much faster 64-core speed.
+40%
903 Pts
Series
CPU Architecture
Skylake-X Broadwell-E
Socket
Motherboard Socket
LGA2066 LGA2011-V3
Graphics
Integrated Graphics
None None
Launch Date
Launch Date
Q2'17 Q2'16
Cache
Cache
11 MB L3 15 MB
Recommended Price
Recommended Customer Price
$589.00 - $599.00 N/A
Max Turbo Frequency
Max Turbo Frequency
4.30 GHz 4 GHz
Memory Types
Memory Types
DDR4-2666 DDR4 2400/2133
Max # of PCI Express Lanes
Max # of PCI Express Lanes
28 40

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]

MORE DETAILS

The Core i7-6850K is one of four new Broadwell-E prosumer CPUs. This model has six cores with base and turbo frequencies of 3.6 and 4.0 GHz respectively. The 6850K is based on the 14 nm Broadwell-E architecture. It has a TDP of 140 watts, 40 PCIe 3.0 lanes and no integrated graphics. Because of its relatively high MSRP of around $700, this CPU only makes sense for niche use cases which could include top end graphics design or video production workstations. Comparing the 6850K and 6700K shows that for typical desktop use the 6850K only offers a gain of around 10% for a whopping two fold price increase. This is because desktop computing largely depends on single core performance and the Skylake i7-6700K is both clocked higher and has higher IPC due to its one generation lead over the 6850K. [Jun '16 CPUPro]

MORE DETAILS

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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