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Core i7-4820K vs i7-6820HQ


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

Using the multithread performance as a reference, the i7-4820K gets a score of 134.1 k points while the i7-6820HQ gets 159.7 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
306e4
506e3
Core
Ivy Bridge -E
Skylake-H
Architecture
Base frecuency
3.7 GHz
2.7 GHz
Boost frecuency
3.9 GHz
3.6 GHz
Socket
LGA 1155
BGA1440
Cores/Threads
4/8
4/8
TDP
130 W
45 W
Cache L1 (d+i)
32+32 kB
4x32+4x32 kB
Cache L2
256 kB
4x256 kB
Cache L3
8192 kB
8192 kB
Date
September 2013
October 2015
Mean monothread perf.
32.49k points
50.1k points
Mean multithread perf.
134.08k points
205.89k 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
i7-4820K
i7-6820HQ
Test#1 (Integers)
11.85k
11.78k (x0.99)
Test#2 (FP)
11.84k
18.06k (x1.53)
Test#3 (Generic, ZIP)
4.69k
4.48k (x0.96)
Test#1 (Memory)
4.12k
7.12k (x1.73)
TOTAL
32.49k
41.44k (x1.28)

Multithread

i7-4820K

i7-6820HQ
Test#1 (Integers)
47.65k
49.46k (x1.04)
Test#2 (FP)
54.81k
84.8k (x1.55)
Test#3 (Generic, ZIP)
21.56k
20.7k (x0.96)
Test#1 (Memory)
10.05k
4.77k (x0.47)
TOTAL
134.08k
159.73k (x1.19)

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

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