Intel
IntelBX80662I56600K
  

4 Cores, 4 Threads @2.4 GHz, Sandy Bridge EP.
Release date ≤ Q1 2014.

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

Real World Speed
Performance profile from 343,003 user samples
759 User Benchmarks
Best Bench: 62% Base clock 2.4 GHz, turbo 2.4 GHz (avg)
Worst Bench: 46% Base clock 2.45 GHz
Poor: 46% Great: 62%
SPEED RANK: 667th / 1456
Gaming
Gaming 56%
Gunboat
Desktop
Desktop 59%
Gunboat
Workstation
Workstation 41%
Speed boat
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: 363rd / 1456
Gaming
Gaming 72%
Battleship
Desktop
Desktop 80%
Battleship
Workstation
Workstation 55%
Yacht
Effective Speed
Effective CPU Speed
56.3 % 72.4 % Faster effective speed.
+29%
Memory
Avg. Memory Latency
74.2 Pts 83.3 Pts Lower memory latency.
+12%
1-Core
Avg. Single Core Speed
59.4 Pts 110 Pts Hugely faster single-core speed.
+85%
2-Core
Avg. Dual Core Speed
120 Pts 218 Pts Hugely faster dual-core speed.
+82%
4-Core
Avg. Quad Core Speed
223 Pts 352 Pts Much faster quad-core speed.
+58%
8-Core
Avg. Octa Core Speed
228 Pts 373 Pts Much faster octa-core speed.
+64%
Memory
OC Memory Latency
81 Pts 95.2 Pts Lower OC memory latency.
+18%
1-Core
OC Single Core Speed
63.7 Pts 136 Pts Hugely faster OC single-core speed.
+114%
2-Core
OC Dual Core Speed
127 Pts 269 Pts Hugely faster OC dual-core speed.
+112%
4-Core
OC Quad Core Speed
254 Pts 455 Pts Much faster OC quad-core speed.
+79%
8-Core
OC Octa Core Speed
254 Pts 476 Pts Hugely faster OC octa-core speed.
+87%
Market Share
Based on 68,153,532 CPUs tested
Market Share
Market Share (trailing 30 days)
0 % 0.48 % Insanely higher market share.
+∞%
User Rating
UBM User Rating
50 % 74 % Much more popular.
+48%
Age
Newest
125+ Months 107 Months More recent.
+14%
64-Core
OC Multi Core Speed
254 Pts 484 Pts Hugely faster OC 64-core speed.
+91%
64-Core
Avg. Multi Core Speed
230 Pts 378 Pts Much faster 64-core speed.
+64%
Launch Date
Launch Date
Q1'12 Q3'15
Cache
Cache
10 MB SmartCache 6 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
AVX SSE4.1/4.2, AVX 2.0
Lithography
Lithography
32 nm 14 nm
Recommended Price
Recommended Customer Price
$294.00 - $299.00 $242.00 - $243.00
Bus Speed
Bus Speed
6.4 GT/s QPI 8 GT/s DMI3
Scalability
Scalability
2S Only 1S Only
Max Memory Size
Max Memory Size (dependent on memory type)
384 GB 64 GB
Memory Types
Memory Types
DDR3 800/1066 DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V
Memory Channels
Max # of Memory Channels
4 2
ECC Memory Supported
ECC Memory Supported ‡
Yes No
Package Size
Package Size
52.5mm x 45.0mm 37.5mm x 37.5mm
Max CPU Configuration
Max CPU Configuration
2 1
Turbo Boost Tech
Intel® Turbo Boost Technology ‡
No 2.0
vPro Tech
Intel® vPro™ Technology ‡
Yes No
Identity Protection Tech
Intel® Identity Protection Technology ‡
No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
Yes No
Max # of PCI Express Lanes
Max # of PCI Express Lanes
40 16

More specs » More specs »
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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]

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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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