Core i7-4790 vs i7-6820HQ
Description
The i7-4790 is based on Haswell architecture while the i7-6820HQ is based on Skylake.
Using the multithread performance as a reference, the i7-4790 gets a score of 173.9 k points while the i7-6820HQ gets 205.9 k points.
Summarizing, the i7-6820HQ is 1.2 times faster than the i7-4790 . To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i7-4790 gets a score of 173.9 k points while the i7-6820HQ gets 205.9 k points.
Summarizing, the i7-6820HQ is 1.2 times faster than the i7-4790 . To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
306c3
506e3
Core
Haswell
Skylake-H
Base frecuency
3.6 GHz
2.7 GHz
Boost frecuency
4 GHz
3.6 GHz
Socket
LGA 1150
BGA1440
Cores/Threads
4/8
4/8
TDP
84 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
May 2014
October 2015
Mean monothread perf.
44.73k points
50.1k points
Mean multithread perf.
173.89k points
205.89k 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
i7-4790
i7-6820HQ
Test#1 (Integers)
4.51k
3.18k (x0.7)
Test#2 (FP)
11.24k
13.02k (x1.16)
Test#3 (Generic, ZIP)
5.03k
4.17k (x0.83)
Test#1 (Memory)
5.02k
6.93k (x1.38)
TOTAL
25.8k
27.3k (x1.06)
Multithread
i7-4790
i7-6820HQ
Test#1 (Integers)
15.72k
13.26k (x0.84)
Test#2 (FP)
54.99k
62.23k (x1.13)
Test#3 (Generic, ZIP)
23.87k
20.34k (x0.85)
Test#1 (Memory)
5.48k
5.46k (x1)
TOTAL
100.06k
101.29k (x1.01)
SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
i7-4790
i7-6820HQ
Test#1 (Integers)
13.52k
11.54k (x0.85)
Test#2 (FP)
11.94k
16.69k (x1.4)
Test#3 (Generic, ZIP)
4.96k
4.51k (x0.91)
Test#1 (Memory)
4.84k
7.27k (x1.5)
TOTAL
35.25k
40.01k (x1.13)
Multithread
i7-4790
i7-6820HQ
Test#1 (Integers)
54.7k
48.5k (x0.89)
Test#2 (FP)
52.41k
77.02k (x1.47)
Test#3 (Generic, ZIP)
24.5k
21.3k (x0.87)
Test#1 (Memory)
6.77k
5.24k (x0.77)
TOTAL
138.37k
152.06k (x1.1)
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
i7-4790
i7-6820HQ
Test#1 (Integers)
14.07k
11.78k (x0.84)
Test#2 (FP)
12.63k
18.06k (x1.43)
Test#3 (Generic, ZIP)
5.35k
4.48k (x0.84)
Test#1 (Memory)
4.98k
7.12k (x1.43)
TOTAL
37.03k
41.44k (x1.12)
Multithread
i7-4790
i7-6820HQ
Test#1 (Integers)
57.88k
49.46k (x0.85)
Test#2 (FP)
60.83k
84.8k (x1.39)
Test#3 (Generic, ZIP)
24.4k
20.7k (x0.85)
Test#1 (Memory)
6.95k
4.77k (x0.69)
TOTAL
150.07k
159.73k (x1.06)
AVX2 optimized benchmark
The benchmark in mode III (AVX2), like AVX1, is optimized to used 256 bits registers beside the second version of the Advanced Vector Extensions (AVX). The first AVX2 compatible CPU was released in 2013.
Monothread
i7-4790
i7-6820HQ
Test#1 (Integers)
22.19k
20.99k (x0.95)
Test#2 (FP)
12.45k
18.63k (x1.5)
Test#3 (Generic, ZIP)
5.11k
4.33k (x0.85)
Test#1 (Memory)
4.98k
6.15k (x1.24)
TOTAL
44.73k
50.1k (x1.12)
Multithread
i7-4790
i7-6820HQ
Test#1 (Integers)
87.14k
91.8k (x1.05)
Test#2 (FP)
58k
87.24k (x1.5)
Test#3 (Generic, ZIP)
22.75k
20.55k (x0.9)
Test#1 (Memory)
6k
6.3k (x1.05)
TOTAL
173.89k
205.89k (x1.18)
Performance/W
i7-4790
i7-6820HQ
Test#1 (Integers)
1037 points/W
2040 points/W
Test#2 (FP)
691 points/W
1939 points/W
Test#3 (Generic, ZIP)
271 points/W
457 points/W
Test#1 (Memory)
71 points/W
140 points/W
TOTAL
2070 points/W
4575 points/W
Performance/GHz
i7-4790
i7-6820HQ
Test#1 (Integers)
5547 points/GHz
5831 points/GHz
Test#2 (FP)
3113 points/GHz
5174 points/GHz
Test#3 (Generic, ZIP)
1279 points/GHz
1204 points/GHz
Test#1 (Memory)
1244 points/GHz
1708 points/GHz
TOTAL
11183 points/GHz
13917 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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Hardlimit Benchmark Central - Ver. 3.11.4