IntelBX80673I77820X
IntelBX80684I58600K

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

6 Cores, 6 Threads @3.6GHz, Coffee Lake.
Release date: Q4 2017.

Real World Speed
Performance profile from 293,361 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: 233rd / 1442
Gaming
Gaming 80%
Aircraft carrier
Desktop
Desktop 81%
Aircraft carrier
Workstation
Workstation 81%
Aircraft carrier
264,837 User Benchmarks
Best Bench: 101% Base clock 3.6 GHz, turbo 4.95 GHz (avg)
Worst Bench: 79% Base clock 3.6 GHz, turbo 4.05 GHz (avg)
Poor: 79% Great: 101%
SPEED RANK: 136th / 1442
Gaming
Gaming 91%
Nuclear submarine
Desktop
Desktop 92%
Nuclear submarine
Workstation
Workstation 74%
Battleship
Effective Speed
Effective CPU Speed
80.1 % 90.7 % Faster effective speed.
+13%
Memory
Avg. Memory Latency
75.5 Pts 90.1 Pts Lower memory latency.
+19%
1-Core
Avg. Single Core Speed
121 Pts 129 Pts Slightly faster single-core speed.
+7%
2-Core
Avg. Dual Core Speed
238 Pts 257 Pts Slightly faster dual-core speed.
+8%
4-Core
Avg. Quad Core Speed
455 Pts 502 Pts Faster quad-core speed.
+10%
8-Core
Avg. Octa Core Speed
822 Pts Faster octa-core speed.
+25%
656 Pts
Memory
OC Memory Latency
85 Pts 96.5 Pts Lower OC memory latency.
+14%
1-Core
OC Single Core Speed
138 Pts 151 Pts Slightly faster OC single-core speed.
+9%
2-Core
OC Dual Core Speed
272 Pts 302 Pts Faster OC dual-core speed.
+11%
4-Core
OC Quad Core Speed
533 Pts 594 Pts Faster OC quad-core speed.
+11%
8-Core
OC Octa Core Speed
976 Pts Faster OC octa-core speed.
+22%
798 Pts
Market Share
Based on 67,741,095 CPUs tested
Market Share
Market Share (trailing 30 days)
0.05 % 0.51 % Hugely higher market share.
+920%
Value
Value For Money
73.8 % 103 % Much better value.
+40%
User Rating
UBM User Rating
63 % 78 % More popular.
+24%
Price
Price (score)
$375 $173 Much cheaper.
+54%
Age
Newest
81 Months 78 Months +4%
TDP
Thermal Design Power (TDP)
140 Watts 95 Watts Much more energy efficient.
+32%
Cores
CPU Processing Cores
8 cores Much higher core count.
+33%
6 cores
Threads
CPU Processing Threads
16 threads Hugely higher thread count.
+167%
6 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 +5% 4.3 GHz
64-Core
OC Multi Core Speed
1445 Pts Much faster OC 64-core speed.
+75%
828 Pts
64-Core
Avg. Multi Core Speed
1263 Pts Hugely faster 64-core speed.
+85%
681 Pts
Series
CPU Architecture
Skylake-X Coffee Lake
Socket
Motherboard Socket
LGA2066 FCLGA1151
Graphics
Integrated Graphics
None UHD 630
Launch Date
Launch Date
Q2'17 Q4'17
Cache
Cache
11 MB L3 9 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0, AVX-512 SSE4.1/4.2, AVX2
Recommended Price
Recommended Customer Price
$589.00 - $599.00 N/A
Thermal Solution Specification
Thermal Solution Specification
PCG 2017X PCG 2015C (130W)
Max Memory Size
Max Memory Size (dependent on memory type)
128 GB 64 GB
Memory Channels
Max # of Memory Channels
4 2
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
Max # of PCI Express Lanes
Max # of PCI Express Lanes
28 16

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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The unlocked hex-core i5-8600K from Intel’s latest Coffee Lake generation of processors is the new flagship of the i5 series, succeeding the Kaby Lake quad-core i5-7600K. The 8th generation of processors brings the largest performance uplift since Sandy Bridge by adding more cores at each of the i3, i5 and i7 product lines. Like the other Coffee Lake processors, the i5-8600K is built upon optimized 14nm architecture, marginally improved upon from Kaby Lake and Skylake. The 8600K has a 95W TDP and a nominal stock clock of 3.6 GHz, which boosts to 4.1 GHz for all six cores, 4.2 GHz for dual/quad and 4.3 GHz for single core. Early benchmarks put the i5-8600K’s effective speed 15% ahead of the i5-7600K. A 50% increase in multi-core speed is explained by two additional cores and thanks to the quad-core clock bump from 4 GHz on the 7600K to 4.2 GHz on the 8600K there is also an additional 5% performance boost across all workloads. All Coffee Lake processors require a 300-series chipset, making a straight CPU upgrade unfeasible despite sharing the same socket as their Z270 predecessors. Even though most games still use less than 4 cores simultaneously, the i5-8600K is a great choice for gamers but for $80 less, the 8350K which is faster than last years 7600K and only marginally weaker for gaming than the 8600K is certainly well worth considering as well. [Oct '17 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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 Frequently Asked Questions

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