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Core i5-6600K vs i5-6500


Description
Both models i5-6600K and i5-6500 are based on Skylake architecture.

Sky Lake is also known as 6th generation Core. Include Thunderbolt 3.0, SATA Express and Iris Pro graphics with DirectX 12. It uses LGA 1151 socket for mainstream models and LGA 2066 for X-Series. Sky Lake comes with AVX2 support in all mainstreams CPUs and AVX-512 in some high end models.

Using the multithread performance as a reference, the i5-6600K gets a score of 209.3 k points while the i5-6500 gets 147.1 k points.

Summarizing, the i5-6600K is 1.4 times faster than the i5-6500 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
506e3
Core
Skylake-S
Skylake-S
Architecture
Base frecuency
3.5 GHz
3.2 GHz
Boost frecuency
3.9 GHz
3.6 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
4/4
4/4
TDP
95 W
65 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
256 kB
4x256 kB
Cache L3
6144 kB
6144 kB
Date
May 2015
September 2015
Mean monothread perf.
59.28k points
53.7k points
Mean multithread perf.
209.28k points
179.44k points

AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
i5-6600K
i5-6500
Test#1 (Integers)
17.24k
13.07k (x0.76)
Test#2 (FP)
26.5k
20.23k (x0.76)
Test#3 (Generic, ZIP)
6.45k
4.93k (x0.76)
Test#1 (Memory)
9.09k
9.2k (x1.01)
TOTAL
59.28k
47.43k (x0.8)

Multithread

i5-6600K

i5-6500
Test#1 (Integers)
68.47k
49.62k (x0.72)
Test#2 (FP)
105.05k
74.82k (x0.71)
Test#3 (Generic, ZIP)
25.24k
18.46k (x0.73)
Test#1 (Memory)
10.5k
4.21k (x0.4)
TOTAL
209.28k
147.12k (x0.7)

Performance/W
i5-6600K
i5-6500
Test#1 (Integers)
721 points/W
763 points/W
Test#2 (FP)
1106 points/W
1151 points/W
Test#3 (Generic, ZIP)
266 points/W
284 points/W
Test#1 (Memory)
111 points/W
65 points/W
TOTAL
2203 points/W
2263 points/W

Performance/GHz
i5-6600K
i5-6500
Test#1 (Integers)
4420 points/GHz
3632 points/GHz
Test#2 (FP)
6795 points/GHz
5620 points/GHz
Test#3 (Generic, ZIP)
1653 points/GHz
1368 points/GHz
Test#1 (Memory)
2331 points/GHz
2555 points/GHz
TOTAL
15199 points/GHz
13175 points/GHz

Monothread performance graph
Monothread performance graphics gives the performance vs time. They are useful to measure the time it takes to the CPU to reach the maximum performance.

Usually, CPU's performance will be steady during these tests but if it has a slow frequency strategy, the first samples will show a lower score.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Multithread performance graph
Multithread graphs measure the performance against a heavy load during certain time.

If CPU's TDP doesn't limit the frequency and the machine is properly cooled, performance should remain steady vs time. Otherwise, the performance score will oscillate or decrease over time.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Hardlimit Benchmark Central - Ver. 3.11.4