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Core i7-6820HQ vs i7-4820K


Description
The i7-6820HQ is based on Skylake architecture while the i7-4820K is based on Ivy Bridge.

Using the multithread performance as a reference, the i7-6820HQ gets a score of 159.7 k points while the i7-4820K gets 134.1 k points.

Summarizing, the i7-6820HQ is 1.2 times faster than the i7-4820K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
306e4
Core
Skylake-H
Ivy Bridge -E
Architecture
Base frecuency
2.7 GHz
3.7 GHz
Boost frecuency
3.6 GHz
3.9 GHz
Socket
BGA1440
LGA 1155
Cores/Threads
4/8
4/8
TDP
45 W
130 W
Cache L1 (d+i)
4x32+4x32 kB
32+32 kB
Cache L2
4x256 kB
256 kB
Cache L3
8192 kB
8192 kB
Date
October 2015
September 2013

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
i7-6820HQ
i7-4820K
Test#1 (Integers)
11784
11853 (0.58%)
Test#2 (FP)
18056
11837 (-34.44%)
Test#3 (Generic, ZIP)
4479
4685 (4.59%)
Test#1 (Memory)
7117
4117 (-42.16%)
TOTAL
41437
32491 (-21.59%)

Multithread

i7-6820HQ

i7-4820K
Test#1 (Integers)
49458
47653 (-3.65%)
Test#2 (FP)
84798
54815 (-35.36%)
Test#3 (Generic, ZIP)
20703
21562 (4.15%)
Test#1 (Memory)
4770
10046 (110.60%)
TOTAL
159730
134076 (-16.06%)

Performance/W
i7-6820HQ
i7-4820K
Test#1 (Integers)
1099 points/W
367 points/W
Test#2 (FP)
1884 points/W
422 points/W
Test#3 (Generic, ZIP)
460 points/W
166 points/W
Test#1 (Memory)
106 points/W
77 points/W
TOTAL
3550 points/W
1031 points/W

Performance/GHz
i7-6820HQ
i7-4820K
Test#1 (Integers)
3273 points/GHz
3039 points/GHz
Test#2 (FP)
5016 points/GHz
3035 points/GHz
Test#3 (Generic, ZIP)
1244 points/GHz
1201 points/GHz
Test#1 (Memory)
1977 points/GHz
1056 points/GHz
TOTAL
11510 points/GHz
8331 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. 3.7.8