IntelBX80677I77700K
IntelBX80684I38100

4 Cores, 8 Threads @4.2GHz, Kaby Lake.
Release date: Q1 2017.

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

Real World Speed
Performance profile from 338,492 user samples
292,842 User Benchmarks
Best Bench: 111% Base clock 4.2 GHz, turbo 5 GHz (avg)
Worst Bench: 80% Base clock 4.2 GHz, turbo 2.25 GHz (avg)
Poor: 80% Great: 111%
SPEED RANK: 39th / 1173
Gaming
Gaming 96%
Nuclear submarine
Desktop
Desktop 97%
Nuclear submarine
Workstation
Workstation 70%
Battleship
45,650 User Benchmarks
Best Bench: 83% Base clock 3.6 GHz, turbo 3.6 GHz (avg)
Worst Bench: 61% Base clock 3.6 GHz, turbo 3.6 GHz (avg)
Poor: 61% Great: 83%
SPEED RANK: 105th / 1173
Gaming
Gaming 77%
Battleship
Desktop
Desktop 75%
Battleship
Workstation
Workstation 47%
Yacht
Effective Speed
Effective CPU Speed
96.1 % Faster effective speed.
+25%
76.6 %
SC Mixed
Avg. Single Core Mixed Speed
136 Pts Faster single-core speed.
+27%
107 Pts
QC Mixed
Avg. Quad Core Mixed Speed
470 Pts Faster quad-core speed.
+19%
394 Pts
MC Mixed
Avg. Multi Core Mixed Speed
705 Pts Much faster multi-core speed.
+74%
406 Pts
SC Mixed
OC Single Core Mixed Speed
152 Pts Much faster OC single-core speed.
+36%
112 Pts
QC Mixed
OC Quad Core Mixed Speed
566 Pts Faster OC quad-core speed.
+29%
438 Pts
MC Mixed
OC Multi Core Mixed Speed
806 Pts Hugely faster OC multi-core speed.
+82%
443 Pts
Market Share
Based on 18,524,761 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.6 % Hugely higher market share.
+240%
0.47 %
Value
Value For Money
89.3 % 107 % Better value.
+20%
User Rating
UBM User Rating
130 % Much more popular.
+44%
90 %
Price
Price (score)
$354 $120 Much cheaper.
+66%
Age
Newest
30 Months 21 Months Much more recent.
+30%
TDP
Thermal Design Power (TDP)
91 Watts 65 Watts More energy efficient.
+29%
Cores
CPU Processing Cores
4 cores 4 cores
Threads
CPU Processing Threads
8 threads Hugely higher thread count.
+100%
4 threads
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
4.2 GHz Faster base frequency.
+17%
3.6 GHz
Turbo Clock
Turbo Clock Speed
4.5 GHz Faster turbo frequency.
+25%
3.6 GHz
SC Int
Single Core Integer Speed
148 Pts Much faster single-core int speed.
+37%
108 Pts
SC Float
Single Core Floating Point Speed
157 Pts Much faster single-core fp speed.
+34%
117 Pts
QC Int
Quad Core Integer Speed
546 Pts Much faster quad-core int speed.
+30%
420 Pts
QC Float
Quad Core Floating Point Speed
584 Pts Faster quad-core fp speed.
+25%
466 Pts
MC Int
Multi Core Integer Speed
730 Pts Much faster multi-core int speed.
+73%
422 Pts
MC Float
Multi Core Floating Point Speed
861 Pts Hugely faster multi-core fp speed.
+84%
467 Pts
Series
CPU Architecture
Kaby Lake Coffee Lake
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
HD 630 UHD 630
Launch Date
Launch Date
Q1'17 Q4'17
Cache
Cache
8 MB 6 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0 SSE4.1/4.2, AVX2
Recommended Price
Recommended Customer Price
$339.00 - $350.00 N/A
Thermal Solution Specification
Thermal Solution Specification
PCG 2015D (130W) PCG 2015C (65W)
Memory Types
Memory Types
DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V DDR4-2400
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 630 Intel® UHD Graphics 630
Graphics Base Frequency
Graphics Base Frequency
350.00 MHz 350 MHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.15 GHz 1.10 GHz
Turbo Boost Tech
Intel® Turbo Boost Technology
2.0 No
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
TSX-NI
Intel® TSX-NI
Yes No
PCI Express Configurations
PCI Express Configurations ‡
Up to 1x16, 2x8, 1x8+2x4 Up to 1x16 or 2x8 or 1x8+2x4

More specs » More specs »
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The Core i7-7700K is Intel’s flagship Kaby Lake based CPU which is reported to have the same IPC as its predecessor, Skylake. Comparing the 7700K and 6700K shows that both average effective speed and peak overclocked speed are up by 7%. Most of the increase in average effective speed is explained by the 5% boost in base clocks from 4.0 to 4.2 GHz. The improved peak lab speed is attributable to a combination of better overclocking capacity and improvements in Intel’s speedshift technology which make the 7700K slightly more responsive. Kaby Lake also has marginally better HD 630 integrated graphics. The i7-7700K is priced similarly to the i7-6700K so for top end gaming and workstation builds, the 7700K is the clear choice for 2017. AMD’s Ryzen will release later this year so things could change at that time. [Jan '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) July 2019 CPU Rankings.

We calculate effective speed which measures real world performance for typical consumers. Effective speed is adjusted by current prices to yield a value for money rating which is geared towards gamers. 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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