IntelBX80677I77700K
IntelBX80684I78700

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

6 Cores, 12 Threads @3.2GHz, Coffee Lake.
Release date: Q4 2017.

Real World Speed
Performance profile from 1,061,879 user samples
712,312 User Benchmarks
Best Bench: 92% Base clock 4.2 GHz, turbo 5 GHz (avg)
Worst Bench: 71% Base clock 4.2 GHz, turbo 0.2 GHz (avg)
Poor: 71% Great: 92%
SPEED RANK: 188th / 1442
Gaming
Gaming 84%
Aircraft carrier
Desktop
Desktop 89%
Aircraft carrier
Workstation
Workstation 70%
Battleship
349,567 User Benchmarks
Best Bench: 94% Base clock 3.2 GHz, turbo 4.3 GHz (avg)
Worst Bench: 75% Base clock 3.2 GHz, turbo 0.8 GHz (avg)
Poor: 75% Great: 94%
SPEED RANK: 161st / 1442
Gaming
Gaming 87%
Aircraft carrier
Desktop
Desktop 89%
Aircraft carrier
Workstation
Workstation 78%
Battleship
Effective Speed
Effective CPU Speed
84.2 % 87 % +3%
Memory
Avg. Memory Latency
89.6 Pts +1% 88.7 Pts
1-Core
Avg. Single Core Speed
127 Pts +1% 126 Pts
2-Core
Avg. Dual Core Speed
242 Pts 245 Pts +1%
4-Core
Avg. Quad Core Speed
426 Pts 459 Pts Slightly faster quad-core speed.
+8%
8-Core
Avg. Octa Core Speed
647 Pts 748 Pts Faster octa-core speed.
+16%
Memory
OC Memory Latency
96.5 Pts +1% 95.5 Pts
1-Core
OC Single Core Speed
142 Pts Slightly faster OC single-core speed.
+8%
132 Pts
2-Core
OC Dual Core Speed
275 Pts +5% 263 Pts
4-Core
OC Quad Core Speed
482 Pts 518 Pts Slightly faster OC quad-core speed.
+7%
8-Core
OC Octa Core Speed
737 Pts 822 Pts Faster OC octa-core speed.
+12%
Market Share
Based on 67,714,956 CPUs tested
Market Share
Market Share (trailing 30 days)
1 % 1.11 % Higher market share.
+11%
Value
Value For Money
87.5 % 95.3 % Slightly better value.
+9%
User Rating
UBM User Rating
83 % More popular.
+17%
71 %
Price
Price (score)
$242 $200 Cheaper.
+17%
Age
Newest
87 Months 78 Months More recent.
+10%
TDP
Thermal Design Power (TDP)
91 Watts 65 Watts More energy efficient.
+29%
Cores
CPU Processing Cores
4 cores 6 cores Much higher core count.
+50%
Threads
CPU Processing Threads
8 threads 12 threads Much higher thread count.
+50%
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
4.2 GHz Much faster base frequency.
+31%
3.2 GHz
Turbo Clock
Turbo Clock Speed
4.5 GHz 4.6 GHz +2%
64-Core
OC Multi Core Speed
747 Pts 1043 Pts Much faster OC 64-core speed.
+40%
64-Core
Avg. Multi Core Speed
662 Pts 936 Pts Much faster 64-core speed.
+41%
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 12 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
Max Turbo Frequency
Max Turbo Frequency
4.50 GHz 4.60 GHz
Thermal Solution Specification
Thermal Solution Specification
PCG 2015D (130W) PCG 2015C (65W)
Memory Types
Memory Types
DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V DDR4-2666
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 1.20 GHz
vPro Tech
Intel® vPro™ Technology ‡
No Yes
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
No Yes
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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The high-end hex core, 12 thread i7-8700 is second in Intel’s line up of 8th generation Coffee Lake CPUs that witnesses an increase in the number of cores at each SKU, as well as further refinement on the 14nm architecture as seen in the 6th and 7th generations. The i7-8700 features a TDP of 65W, 12MB of L3 Cache and 16 PCIe lanes. Although the 8700 has a base clock of 3.2 GHz it has an all core boost of 4.3 GHz and a single core boost of 4.6 GHz. These are unusually high clocks for a non-K SKU, Intel have historically clocked their non-K SKUs around 10% lower than the flagship K variants but with Coffee Lake, the 8700 is almost a match for a stock 8700K. Priced at $320, the i7-8700 offers exceptional single, quad and multi-core processing power to the mainstream market but unfortunately a new 300 series chipset will also need to be factored into the purchase. AMD’s comparably priced Ryzen 7 1700X is an 8 core 16 thread processor which is around 20% faster at multi-threaded tasks, but has around 20% slower single and quad core performance so the choice between these two processors is use case dependant but generally favours Intel for most desktop users whose workloads are typically single or dual core bound.  [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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