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Core i5-3470 vs i7-6820HQ


Description
The i5-3470 is based on Ivy Bridge architecture while the i7-6820HQ is based on Skylake.

Using the multithread performance as a reference, the i5-3470 gets a score of 94.1 k points while the i7-6820HQ gets 159.7 k points.

Summarizing, the i7-6820HQ is 1.7 times faster than the i5-3470 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
306a9
506e3
Core
Ivy Bridge
Skylake-H
Architecture
Base frecuency
3.2 GHz
2.7 GHz
Boost frecuency
3.6 GHz
3.6 GHz
Socket
LGA 1155
BGA1440
Cores/Threads
4/4
4/8
TDP
77 W
45 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
6144 kB
8192 kB
Date
June 2012
October 2015
Mean monothread perf.
31.71k points
50.1k points
Mean multithread perf.
94.15k 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
i5-3470
i7-6820HQ
Test#1 (Integers)
3.62k
3.18k (x0.88)
Test#2 (FP)
10.08k
13.02k (x1.29)
Test#3 (Generic, ZIP)
4.47k
4.17k (x0.93)
Test#1 (Memory)
5.39k
6.93k (x1.29)
TOTAL
23.56k
27.3k (x1.16)

Multithread

i5-3470

i7-6820HQ
Test#1 (Integers)
13.66k
13.26k (x0.97)
Test#2 (FP)
37.73k
62.23k (x1.65)
Test#3 (Generic, ZIP)
17.07k
20.34k (x1.19)
Test#1 (Memory)
8.57k
5.46k (x0.64)
TOTAL
77.04k
101.29k (x1.31)

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
i5-3470
i7-6820HQ
Test#1 (Integers)
12.26k
11.54k (x0.94)
Test#2 (FP)
11k
16.69k (x1.52)
Test#3 (Generic, ZIP)
4.76k
4.51k (x0.95)
Test#1 (Memory)
5.39k
7.27k (x1.35)
TOTAL
33.42k
40.01k (x1.2)

Multithread

i5-3470

i7-6820HQ
Test#1 (Integers)
46.54k
48.5k (x1.04)
Test#2 (FP)
41.4k
77.02k (x1.86)
Test#3 (Generic, ZIP)
18.09k
21.3k (x1.18)
Test#1 (Memory)
8.69k
5.24k (x0.6)
TOTAL
114.73k
152.06k (x1.33)

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
i5-3470
i7-6820HQ
Test#1 (Integers)
11.51k
11.78k (x1.02)
Test#2 (FP)
11.12k
18.06k (x1.62)
Test#3 (Generic, ZIP)
4.44k
4.48k (x1.01)
Test#1 (Memory)
4.64k
7.12k (x1.53)
TOTAL
31.71k
41.44k (x1.31)

Multithread

i5-3470

i7-6820HQ
Test#1 (Integers)
37.93k
49.46k (x1.3)
Test#2 (FP)
36.37k
84.8k (x2.33)
Test#3 (Generic, ZIP)
14.14k
20.7k (x1.46)
Test#1 (Memory)
5.71k
4.77k (x0.83)
TOTAL
94.15k
159.73k (x1.7)

Performance/W
i5-3470
i7-6820HQ
Test#1 (Integers)
493 points/W
1099 points/W
Test#2 (FP)
472 points/W
1884 points/W
Test#3 (Generic, ZIP)
184 points/W
460 points/W
Test#1 (Memory)
74 points/W
106 points/W
TOTAL
1223 points/W
3550 points/W

Performance/GHz
i5-3470
i7-6820HQ
Test#1 (Integers)
3196 points/GHz
3273 points/GHz
Test#2 (FP)
3090 points/GHz
5016 points/GHz
Test#3 (Generic, ZIP)
1234 points/GHz
1244 points/GHz
Test#1 (Memory)
1289 points/GHz
1977 points/GHz
TOTAL
8809 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