Core i7-6820HQ vs i7-4790
Description
The i7-6820HQ is based on Skylake architecture while the i7-4790 is based on Haswell.
Using the multithread performance as a reference, the i7-6820HQ gets a score of 205.9 k points while the i7-4790 gets 173.9 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 i7-6820HQ gets a score of 205.9 k points while the i7-4790 gets 173.9 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
506e3
306c3
Core
Skylake-H
Haswell
Base frecuency
2.7 GHz
3.6 GHz
Boost frecuency
3.6 GHz
4 GHz
Socket
BGA1440
LGA 1150
Cores/Threads
4/8
4/8
TDP
45 W
84 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
May 2014
Mean monothread perf.
50.1k points
44.73k points
Mean multithread perf.
205.89k points
173.89k 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
i7-6820HQ
i7-4790
Test#1 (Integers)
3.18k
4.51k (x1.42)
Test#2 (FP)
13.02k
11.24k (x0.86)
Test#3 (Generic, ZIP)
4.17k
5.03k (x1.21)
Test#1 (Memory)
6.93k
5.02k (x0.72)
TOTAL
27.3k
25.8k (x0.95)
Multithread
i7-6820HQ
i7-4790
Test#1 (Integers)
13.26k
15.72k (x1.19)
Test#2 (FP)
62.23k
54.99k (x0.88)
Test#3 (Generic, ZIP)
20.34k
23.87k (x1.17)
Test#1 (Memory)
5.46k
5.48k (x1)
TOTAL
101.29k
100.06k (x0.99)
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
i7-6820HQ
i7-4790
Test#1 (Integers)
11.54k
13.52k (x1.17)
Test#2 (FP)
16.69k
11.94k (x0.72)
Test#3 (Generic, ZIP)
4.51k
4.96k (x1.1)
Test#1 (Memory)
7.27k
4.84k (x0.66)
TOTAL
40.01k
35.25k (x0.88)
Multithread
i7-6820HQ
i7-4790
Test#1 (Integers)
48.5k
54.7k (x1.13)
Test#2 (FP)
77.02k
52.41k (x0.68)
Test#3 (Generic, ZIP)
21.3k
24.5k (x1.15)
Test#1 (Memory)
5.24k
6.77k (x1.29)
TOTAL
152.06k
138.37k (x0.91)
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
i7-4790
Test#1 (Integers)
11.78k
14.07k (x1.19)
Test#2 (FP)
18.06k
12.63k (x0.7)
Test#3 (Generic, ZIP)
4.48k
5.35k (x1.19)
Test#1 (Memory)
7.12k
4.98k (x0.7)
TOTAL
41.44k
37.03k (x0.89)
Multithread
i7-6820HQ
i7-4790
Test#1 (Integers)
49.46k
57.88k (x1.17)
Test#2 (FP)
84.8k
60.83k (x0.72)
Test#3 (Generic, ZIP)
20.7k
24.4k (x1.18)
Test#1 (Memory)
4.77k
6.95k (x1.46)
TOTAL
159.73k
150.07k (x0.94)
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
i7-6820HQ
i7-4790
Test#1 (Integers)
20.99k
22.19k (x1.06)
Test#2 (FP)
18.63k
12.45k (x0.67)
Test#3 (Generic, ZIP)
4.33k
5.11k (x1.18)
Test#1 (Memory)
6.15k
4.98k (x0.81)
TOTAL
50.1k
44.73k (x0.89)
Multithread
i7-6820HQ
i7-4790
Test#1 (Integers)
91.8k
87.14k (x0.95)
Test#2 (FP)
87.24k
58k (x0.66)
Test#3 (Generic, ZIP)
20.55k
22.75k (x1.11)
Test#1 (Memory)
6.3k
6k (x0.95)
TOTAL
205.89k
173.89k (x0.84)
Performance/W
i7-6820HQ
i7-4790
Test#1 (Integers)
2040 points/W
1037 points/W
Test#2 (FP)
1939 points/W
691 points/W
Test#3 (Generic, ZIP)
457 points/W
271 points/W
Test#1 (Memory)
140 points/W
71 points/W
TOTAL
4575 points/W
2070 points/W
Performance/GHz
i7-6820HQ
i7-4790
Test#1 (Integers)
5831 points/GHz
5547 points/GHz
Test#2 (FP)
5174 points/GHz
3113 points/GHz
Test#3 (Generic, ZIP)
1204 points/GHz
1279 points/GHz
Test#1 (Memory)
1708 points/GHz
1244 points/GHz
TOTAL
13917 points/GHz
11183 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