IntelBX80673I77820X
IntelBX80684I38100

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

4 Cores, 4 Threads @3.6GHz, Coffee Lake.
Release date: Q4 2017.

Real World Speed
Performance profile from 109,916 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 / 1441
Gaming
Gaming 80%
Aircraft carrier
Desktop
Desktop 81%
Aircraft carrier
Workstation
Workstation 81%
Aircraft carrier
81,392 User Benchmarks
Best Bench: 80% Base clock 3.6 GHz, turbo 3.6 GHz (avg)
Worst Bench: 53% Base clock 3.6 GHz, turbo 3.6 GHz (avg)
Poor: 53% Great: 80%
SPEED RANK: 388th / 1441
Gaming
Gaming 71%
Battleship
Desktop
Desktop 77%
Battleship
Workstation
Workstation 53%
Yacht
Effective Speed
Effective CPU Speed
80.1 % Faster effective speed.
+13%
70.6 %
Memory
Avg. Memory Latency
75.5 Pts 81.8 Pts Slightly lower memory latency.
+8%
1-Core
Avg. Single Core Speed
121 Pts Faster single-core speed.
+14%
106 Pts
2-Core
Avg. Dual Core Speed
238 Pts Faster dual-core speed.
+13%
210 Pts
4-Core
Avg. Quad Core Speed
455 Pts Much faster quad-core speed.
+33%
342 Pts
8-Core
Avg. Octa Core Speed
822 Pts Hugely faster octa-core speed.
+129%
359 Pts
Memory
OC Memory Latency
85 Pts 93.4 Pts Slightly lower OC memory latency.
+10%
1-Core
OC Single Core Speed
138 Pts Faster OC single-core speed.
+23%
112 Pts
2-Core
OC Dual Core Speed
272 Pts Faster OC dual-core speed.
+21%
224 Pts
4-Core
OC Quad Core Speed
533 Pts Much faster OC quad-core speed.
+31%
408 Pts
8-Core
OC Octa Core Speed
976 Pts Hugely faster OC octa-core speed.
+133%
419 Pts
Market Share
Based on 67,707,608 CPUs tested
Market Share
Market Share (trailing 30 days)
0.11 % 0.32 % Hugely higher market share.
+191%
Value
Value For Money
73.8 % 91.2 % Better value.
+24%
User Rating
UBM User Rating
63 % 67 % Slightly more popular.
+6%
Price
Price (score)
$375 $110 Much cheaper.
+71%
Age
Newest
81 Months 78 Months +4%
TDP
Thermal Design Power (TDP)
140 Watts 65 Watts Much more energy efficient.
+54%
Cores
CPU Processing Cores
8 cores Hugely higher core count.
+100%
4 cores
Threads
CPU Processing Threads
16 threads Hugely higher thread count.
+300%
4 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.
+25%
3.6 GHz
64-Core
OC Multi Core Speed
1445 Pts Hugely faster OC 64-core speed.
+244%
420 Pts
64-Core
Avg. Multi Core Speed
1263 Pts Hugely faster 64-core speed.
+247%
364 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 6 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 (65W)
Max Memory Size
Max Memory Size (dependent on memory type)
128 GB 64 GB
Memory Types
Memory Types
DDR4-2666 DDR4-2400
Memory Channels
Max # of Memory Channels
4 2
Turbo Boost Tech
Intel® Turbo Boost Technology ‡
2.0 No
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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Intel’s i3-8100 from their 8th generation of Core processors is a mainstream quad-core CPU. It is the entry model of the latest Coffee Lake line up with a clock speed of 3.6 GHz. Previously, i3 Kaby Lake processors had two cores with hyperthreading, but now, i3 Coffee Lake processors have 4 cores and offer much better value for money in terms of dollars per core. With a performance profile that closely matches last years mid range Kaby Lake i5's (the then go-to mid range gaming choice) and a price tag of just $120, the i3-8100 represents excellent value for money. Unfortunately, like all Coffe Lake processors, the i3-8100 does require a new 300-series motherboard even though it shares the same LGA1151 socket as the previous generation of Kaby Lake 200 motherboards. Intel were clearly mindful of AMD's similarly priced quad core Ryzen 3 1200 which achieves very comparable single, and quad-core benchmarks to the i3-8100.  [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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