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Core i5-6500 vs i7-5820K


Description
The i5-6500 is based on Skylake architecture while the i7-5820K is based on Haswell.

Using the multithread performance as a reference, the i5-6500 gets a score of 147.1 k points while the i7-5820K gets 129.1 k points.

Summarizing, the i5-6500 is 1.1 times faster than the i7-5820K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
306f2
Core
Skylake-S
Haswell-E
Architecture
Base frecuency
3.2 GHz
3.3 GHz
Boost frecuency
3.6 GHz
3.6 GHz
Socket
LGA 1151
LGA 1150
Cores/Threads
4/4
6/12
TDP
65 W
140 W
Cache L1 (d+i)
4x32+4x32 kB
32+32 kB
Cache L2
4x256 kB
256 kB
Cache L3
6144 kB
15360 kB
Date
September 2015
September 2014
Mean monothread perf.
53.7k points
31.53k points
Mean multithread perf.
179.44k points
129.06k points

Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
i5-6500
i7-5820K
Test#1 (Integers)
3.46k
3.82k (x1.11)
Test#2 (FP)
14.61k
9.64k (x0.66)
Test#3 (Generic, ZIP)
4.66k
4.29k (x0.92)
Test#1 (Memory)
6.99k
3.78k (x0.54)
TOTAL
29.71k
21.53k (x0.72)

Multithread

i5-6500

i7-5820K
Test#1 (Integers)
12.52k
18.07k (x1.44)
Test#2 (FP)
51.13k
64.25k (x1.26)
Test#3 (Generic, ZIP)
17.41k
27.03k (x1.55)
Test#1 (Memory)
3.9k
8.03k (x2.06)
TOTAL
84.96k
117.38k (x1.38)

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
i5-6500
i7-5820K
Test#1 (Integers)
13.07k
12.03k (x0.92)
Test#2 (FP)
20.23k
11.23k (x0.56)
Test#3 (Generic, ZIP)
4.93k
4.55k (x0.92)
Test#1 (Memory)
9.2k
3.72k (x0.4)
TOTAL
47.43k
31.53k (x0.66)

Multithread

i5-6500

i7-5820K
Test#1 (Integers)
49.62k
49.48k (x1)
Test#2 (FP)
74.82k
52.21k (x0.7)
Test#3 (Generic, ZIP)
18.46k
19.7k (x1.07)
Test#1 (Memory)
4.21k
7.67k (x1.82)
TOTAL
147.12k
129.06k (x0.88)

Performance/W
i5-6500
i7-5820K
Test#1 (Integers)
763 points/W
353 points/W
Test#2 (FP)
1151 points/W
373 points/W
Test#3 (Generic, ZIP)
284 points/W
141 points/W
Test#1 (Memory)
65 points/W
55 points/W
TOTAL
2263 points/W
922 points/W

Performance/GHz
i5-6500
i7-5820K
Test#1 (Integers)
3632 points/GHz
3343 points/GHz
Test#2 (FP)
5620 points/GHz
3119 points/GHz
Test#3 (Generic, ZIP)
1368 points/GHz
1264 points/GHz
Test#1 (Memory)
2555 points/GHz
1033 points/GHz
TOTAL
13175 points/GHz
8759 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