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IntelBX80677I77700K
IntelBX80646I74790K
$348
▲ 8551,492 ▼

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

VS
▲ 8841,780 ▼
 $348 

4 Cores, 8 Threads @4.0GHz, Haswell.
Release date: Q2 2014.

Effective Speed 
+7%
Real World Speed
Performance profile from 1,168,058 user samples
Benchmark your CPU here
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: 209th / 1468
Gaming
Gaming 84%
Aircraft carrier
Desktop
Desktop 89%
Aircraft carrier
Workstation
Workstation 70%
Battleship
455,746 User Benchmarks
Best Bench: 87% Base clock 4 GHz, turbo 4.6 GHz (avg)
Worst Bench: 67% Base clock 4 GHz, turbo 0.7 GHz (avg)
Poor: 67% Great: 87%
SPEED RANK: 270th / 1468
Gaming
Gaming 79%
Battleship
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 65%
Destroyer
Effective Speed
Effective CPU Speed 		84.2 % Slightly faster effective speed.
+7% 		78.9 %
Average Score 
+11%
Memory
Avg. Memory Latency 		89.6 Pts +2% 88.1 Pts
1-Core
Avg. Single Core Speed 		127 Pts Faster single-core speed.
+11% 		114 Pts
2-Core
Avg. Dual Core Speed 		242 Pts Faster dual-core speed.
+12% 		216 Pts
4-Core
Avg. Quad Core Speed 		426 Pts Faster quad-core speed.
+13% 		378 Pts
8-Core
Avg. Octa Core Speed 		647 Pts Faster octa-core speed.
+16% 		560 Pts
Overclocked Score 
+9%
Memory
OC Memory Latency 		96.5 Pts 96.8 Pts +0%
1-Core
OC Single Core Speed 		142 Pts Faster OC single-core speed.
+11% 		128 Pts
2-Core
OC Dual Core Speed 		275 Pts Faster OC dual-core speed.
+11% 		248 Pts
4-Core
OC Quad Core Speed 		482 Pts Faster OC quad-core speed.
+11% 		433 Pts
8-Core
OC Octa Core Speed 		737 Pts Faster OC octa-core speed.
+15% 		643 Pts
Value & Sentiment 
+33%
Market Share
Based on 69,043,187 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.91 % Much higher market share.
+44% 		0.63 %
Value
Value For Money 		99.5 % Much better value.
+34% 		74.2 %
User Rating
UBM User Rating 		85 % 88 % +4%
Price
Price (score) 		$152 Much cheaper.
+56% 		$348
Nice To Haves 
+11%
Age
Newest 		94 Months More recent.
+25% 		125 Months
TDP
Thermal Design Power (TDP) 		91 Watts 88 Watts +3%
Cores
CPU Processing Cores 		4 cores 4 cores
Threads
CPU Processing Threads 		8 threads 8 threads
Lithography
Manufacturing process 		14 nm Much newer manufacturing.
+36% 		22 nm
Base Clock
Base Clock Speed 		4.2 GHz +5% 4 GHz
Turbo Clock
Turbo Clock Speed 		4.5 GHz +2% 4.4 GHz
64-Core
OC Multi Core Speed 		747 Pts Faster OC 64-core speed.
+14% 		654 Pts
64-Core
Avg. Multi Core Speed 		662 Pts Faster 64-core speed.
+16% 		573 Pts
Specifications 
Series
CPU Architecture 		Kaby Lake Haswell
Socket
Motherboard Socket 		FCLGA1151 FCLGA1150
Graphics
Integrated Graphics 		HD 630 HD 4600
Launch Date
Launch Date 		Q1'17 Q2'14
Cache
Cache 		8 MB 8 MB SmartCache
Lithography
Lithography 		14 nm 22 nm
Max Turbo Frequency
Max Turbo Frequency 		4.50 GHz 4.4 GHz
Bus Speed
Bus Speed 		8 GT/s DMI3 5 GT/s DMI2
Thermal Solution Specification
Thermal Solution Specification 		PCG 2015D (130W) PCG 2013D
Max Memory Size
Max Memory Size (dependent on memory type) 		64 GB 32 GB
Memory Types
Memory Types 		DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V DDR3-1333/1600, DDR3L-1333/1600 @ 1.5V
Processor Graphics
Processor Graphics ‡ 		Intel® HD Graphics 630 Intel® HD Graphics 4600
Graphics Base Frequency
Graphics Base Frequency 		350.00 MHz 350 MHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency 		1.15 GHz 1.25 GHz
Graphics Video Max Memory
Graphics Video Max Memory 		64 GB 2 GB
TSX-NI
Intel® TSX-NI 		Yes No

More specs » More specs »
Conclusion 
Average Bench 84.2%
Average Bench 78.9%

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]

MORE DETAILS

The Intel Core i7-4790K, codenamed Devil's Canyon, is an upgraded 4770K, Intel's current flagship i7. The 4790K features an improved thermal interface which enables it to dissipate heat more efficiently than the 4770K. Comparing the 4770K and 4790K shows that stock performance has improved by 13% which is consistent with the base clock jump from 3.5 GHz to 4.0 GHz. OC performance remains unchanged. Comparing the 4790K and 4790 shows that at stock clocks the 4790K is around 16% faster which considering the small price difference makes the 4790K a far better choice. Previously Intel targeted the unlocked K versions at overclockers but with Devil's Canyon they have included VT-d on the K chip and this time it's squarely aimed at both power users and overclockers alike. Until the release of Broadwell in six months, the 4790K is the high end CPU of choice. [Jul '14 CPUPro]

MORE DETAILS

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