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IntelBX80662I56600K
IntelBX80646I74771
▲ 7428,940 ▼

4 Cores, 4 Threads @3.5GHz, Skylake.
Release date: Q3 2015.

VS
▲ 54743 ▼

4 Cores, 8 Threads @3.5GHz, Haswell.
Release date: Q2 2013.

Effective Speed 
+2%
Real World Speed
Performance profile from 353,424 user samples
Benchmark your CPU here
342,244 User Benchmarks
Best Bench: 85% Base clock 3.5 GHz, turbo 4.7 GHz (avg)
Worst Bench: 57% Base clock 3.5 GHz, turbo 3.55 GHz (avg)
Poor: 57% Great: 85%
SPEED RANK: 355th / 1442
Gaming
Gaming 72%
Battleship
Desktop
Desktop 80%
Battleship
Workstation
Workstation 55%
Yacht
11,180 User Benchmarks
Best Bench: 82% Base clock 3.5 GHz, turbo 3.7 GHz (avg)
Worst Bench: 60% Base clock 3.5 GHz, turbo 0.9 GHz (avg)
Poor: 60% Great: 82%
SPEED RANK: 328th / 1442
Gaming
Gaming 73%
Battleship
Desktop
Desktop 77%
Battleship
Workstation
Workstation 60%
Gunboat
Effective Speed
Effective CPU Speed 		72.4 % 73.5 % +2%
Average Score 
+3%
Memory
Avg. Memory Latency 		83.3 Pts 84.2 Pts +1%
1-Core
Avg. Single Core Speed 		110 Pts Slightly faster single-core speed.
+9% 		101 Pts
2-Core
Avg. Dual Core Speed 		218 Pts Faster dual-core speed.
+13% 		193 Pts
4-Core
Avg. Quad Core Speed 		352 Pts +4% 340 Pts
8-Core
Avg. Octa Core Speed 		373 Pts 512 Pts Much faster octa-core speed.
+37%
Overclocked Score 
+8%
Memory
OC Memory Latency 		95.2 Pts +1% 93.9 Pts
1-Core
OC Single Core Speed 		136 Pts Faster OC single-core speed.
+23% 		111 Pts
2-Core
OC Dual Core Speed 		269 Pts Faster OC dual-core speed.
+22% 		220 Pts
4-Core
OC Quad Core Speed 		455 Pts Faster OC quad-core speed.
+12% 		406 Pts
8-Core
OC Octa Core Speed 		476 Pts 571 Pts Faster OC octa-core speed.
+20%
Value & Sentiment 
+534%
Market Share
Based on 67,807,507 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.44 % Insanely higher market share.
+2,100% 		0.02 %
Value
Value For Money 		89.2 % 90.8 % +2%
User Rating
UBM User Rating 		74 % Much more popular.
+37% 		54 %
Price
Price (score) 		$130 $129 +1%
Nice To Haves 
+12%
Age
Newest 		105 Months More recent.
+20% 		131 Months
TDP
Thermal Design Power (TDP) 		91 Watts 84 Watts Slightly more energy efficient.
+8%
Cores
CPU Processing Cores 		4 cores 4 cores
Threads
CPU Processing Threads 		4 threads 8 threads Hugely higher thread count.
+100%
Lithography
Manufacturing process 		14 nm Much newer manufacturing.
+36% 		22 nm
Base Clock
Base Clock Speed 		3.5 GHz 3.5 GHz
Turbo Clock
Turbo Clock Speed 		3.9 GHz 3.9 GHz
64-Core
OC Multi Core Speed 		484 Pts 573 Pts Faster OC 64-core speed.
+18%
64-Core
Avg. Multi Core Speed 		378 Pts 519 Pts Much faster 64-core speed.
+37%
Specifications 
Series
CPU Architecture 		Skylake Haswell
Socket
Motherboard Socket 		FCLGA1151 FCLGA1150
Graphics
Integrated Graphics 		HD 530 HD 4600
Launch Date
Launch Date 		Q3'15 Q3'13
Cache
Cache 		6 MB SmartCache 8 MB SmartCache
Lithography
Lithography 		14 nm 22 nm
Recommended Price
Recommended Customer Price 		$242.00 - $243.00 $314.00 - $320.00
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 		DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V DDR3-1333/1600, DDR3L-1333/1600 @ 1.5V
Memory Bandwidth
Max Memory Bandwidth 		34.1 GB/s 25.6 GB/s
Processor Graphics
Processor Graphics ‡ 		Intel® HD Graphics 530 Intel® HD Graphics 4600
Graphics Output
Graphics Output 		eDP/DP/HDMI/DVI eDP/DP/HDMI/DVI/VGA
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency 		1.15 GHz 1.2 GHz
Graphics Video Max Memory
Graphics Video Max Memory 		64 GB 2 GB
Graphics and IMC Lithography
Graphics and IMC Lithography 		14 nm 22 nm
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡ 		No Yes
TSX-NI
Intel® TSX-NI 		Yes No
vPro Tech
Intel® vPro™ Technology ‡ 		No Yes
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP) 		No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡ 		No Yes
PCI Express Revision
PCI Express Revision 		3.0 Up to 3.0

More specs » More specs »
Conclusion 
Average Bench 72.4%
Average Bench 73.5%
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The Intel Core i5-6600K is based on the new "Skylake" 14nm manufacturing process. Sporting 4 physical cores with base/turbo clocks of 3.5/3.9 GHz the 6600K and its predecessor, the 4690K share the same basic configuration and disappointingly, offer similar performance. Comparing the 6600K and 6700K shows that the 6700K has faster multi and single core performance. The improved multi core performance is due to Hyperthreading which is the key differentiator for the i7-6700K. The gap in single core performance can largely be eliminated by overclocking the i5-6600K so although the stock effective speed is significantly higher on the 6700K, this gap diminishes significantly when both processors are overclocked. At a 30% discount, the 6600K is the better value gaming CPU. [Aug '15 CPUPro]

MORE DETAILS

The Intel i7-4771 is the same as the i7-4770 apart from a 100 MHz increase in base clock from 3.4 GHz to 3.5 GHz. In theory this increase will only impact multi-core workloads because both processors have the same turbo clock of 3.9 GHz which should be engaged during single and dual core workloads. On multi-core workloads the turbo needs to be disabled in order to maintain acceptable core temperatures and operating frequencies drop to base clock where the i7-4771 has a marginal 100 MHz or 2.9% advantage. In other words the two processors should be largely identical. Looking at the i7-4770 vs the i7-4771 benchmarks verifies this. Both the 4770 and 4771 are the current top end mainstream market leaders but for the vast majority of desktop users they are probably overkill as typical consumer use rarely requires more than two cores. [Mar '14 CPUPro]

MORE DETAILS

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