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Core i7-5820K vs i7-7700K


Description
The i7-5820K is based on Haswell architecture while the i7-7700K is based on Kaby Lake.

Using the multithread performance as a reference, the i7-5820K gets a score of 129.1 k points while the i7-7700K gets 238 k points.

Summarizing, the i7-7700K is 1.8 times faster than the i7-5820K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
306f2
906e9
Core
Haswell-E
Kaby Lake-S
Architecture
Base frecuency
3.3 GHz
4.2 GHz
Boost frecuency
3.6 GHz
4.5 GHz
Socket
LGA 1150
LGA 1151
Cores/Threads
6/12
4/8
TDP
140 W
95 W
Cache L1 (d+i)
32+32 kB
32+32 kB
Cache L2
256 kB
256 kB
Cache L3
15360 kB
8192 kB
Date
September 2014
September 2016
Mean monothread perf.
31.53k points
76.98k points
Mean multithread perf.
129.06k points
289.9k 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
i7-5820K
i7-7700K
Test#1 (Integers)
3.82k
4.63k (x1.21)
Test#2 (FP)
9.64k
18.92k (x1.96)
Test#3 (Generic, ZIP)
4.29k
6.22k (x1.45)
Test#1 (Memory)
3.78k
13.92k (x3.68)
TOTAL
21.53k
43.7k (x2.03)

Multithread

i7-5820K

i7-7700K
Test#1 (Integers)
18.07k
18.53k (x1.03)
Test#2 (FP)
64.25k
86.49k (x1.35)
Test#3 (Generic, ZIP)
27.03k
28.78k (x1.06)
Test#1 (Memory)
8.03k
9.67k (x1.2)
TOTAL
117.38k
143.47k (x1.22)

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
i7-5820K
i7-7700K
Test#1 (Integers)
12.03k
17.55k (x1.46)
Test#2 (FP)
11.23k
27.82k (x2.48)
Test#3 (Generic, ZIP)
4.55k
6.8k (x1.49)
Test#1 (Memory)
3.72k
14.83k (x3.99)
TOTAL
31.53k
67k (x2.12)

Multithread

i7-5820K

i7-7700K
Test#1 (Integers)
49.48k
68.4k (x1.38)
Test#2 (FP)
52.21k
118.8k (x2.28)
Test#3 (Generic, ZIP)
19.7k
33.34k (x1.69)
Test#1 (Memory)
7.67k
17.43k (x2.27)
TOTAL
129.06k
237.97k (x1.84)

Performance/W
i7-5820K
i7-7700K
Test#1 (Integers)
353 points/W
720 points/W
Test#2 (FP)
373 points/W
1251 points/W
Test#3 (Generic, ZIP)
141 points/W
351 points/W
Test#1 (Memory)
55 points/W
184 points/W
TOTAL
922 points/W
2505 points/W

Performance/GHz
i7-5820K
i7-7700K
Test#1 (Integers)
3343 points/GHz
3900 points/GHz
Test#2 (FP)
3119 points/GHz
6183 points/GHz
Test#3 (Generic, ZIP)
1264 points/GHz
1510 points/GHz
Test#1 (Memory)
1033 points/GHz
3296 points/GHz
TOTAL
8759 points/GHz
14889 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