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Core i7-4500U vs i7-6820HQ


Description
The i7-4500U is based on Haswell architecture while the i7-6820HQ is based on Skylake.

Using the multithread performance as a reference, the i7-4500U gets a score of 68.3 k points while the i7-6820HQ gets 206.3 k points.

Summarizing, the i7-6820HQ is 3 times faster than the i7-4500U . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
40651
506e3
Core
Haswell
Skylake-H
Architecture
Base frecuency
1.8 GHz
2.7 GHz
Boost frecuency
3 GHz
3.6 GHz
Socket
BGA1168
BGA1440
Cores/Threads
2 /2
4/8
TDP
15 W
45 W
Cache L1 (d+i)
32+32 kB
4x32+4x32 kB
Cache L2
256 kB
4x256 kB
Cache L3
4096 kB
8192 kB
Date
Jun 2013
October 2015

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
i7-4500U
i7-6820HQ
Test#1 (Integers)
3313
3180 (-4.03%)
Test#2 (FP)
8374
13020 (55.48%)
Test#3 (Generic, ZIP)
3680
4169 (13.29%)
Test#1 (Memory)
3343
6931 (107.31%)
TOTAL
18711
27299 (45.90%)

Multithread

i7-4500U

i7-6820HQ
Test#1 (Integers)
5207
13259 (154.62%)
Test#2 (FP)
18544
62228 (235.58%)
Test#3 (Generic, ZIP)
7797
20342 (160.90%)
Test#1 (Memory)
3545
5464 (54.14%)
TOTAL
35092
101292 (188.65%)

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
i7-4500U
i7-6820HQ
Test#1 (Integers)
10196
11536 (13.15%)
Test#2 (FP)
9233
16687 (80.73%)
Test#3 (Generic, ZIP)
3894
4514 (15.93%)
Test#1 (Memory)
3291
7273 (121.01%)
TOTAL
26614
40011 (50.34%)

Multithread

i7-4500U

i7-6820HQ
Test#1 (Integers)
19204
48501 (152.56%)
Test#2 (FP)
19017
77016 (304.99%)
Test#3 (Generic, ZIP)
8308
21301 (156.40%)
Test#1 (Memory)
3222
5242 (62.69%)
TOTAL
49751
152060 (205.64%)

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
i7-4500U
i7-6820HQ
Test#1 (Integers)
10412
11784 (13.18%)
Test#2 (FP)
8970
18056 (101.29%)
Test#3 (Generic, ZIP)
3821
4479 (17.24%)
Test#1 (Memory)
3385
7117 (110.24%)
TOTAL
26588
41437 (55.85%)

Multithread

i7-4500U

i7-6820HQ
Test#1 (Integers)
19907
49458 (148.44%)
Test#2 (FP)
21470
84798 (294.97%)
Test#3 (Generic, ZIP)
8534
20703 (142.59%)
Test#1 (Memory)
3531
4770 (35.12%)
TOTAL
53442
159730 (198.89%)

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
i7-4500U
i7-6820HQ
Test#1 (Integers)
17226
21147 (22.76%)
Test#2 (FP)
9053
18663 (106.15%)
Test#3 (Generic, ZIP)
4032
4359 (8.12%)
Test#1 (Memory)
3623
6240 (72.23%)
TOTAL
33933
50409 (48.55%)

Multithread

i7-4500U

i7-6820HQ
Test#1 (Integers)
33150
91901 (177.23%)
Test#2 (FP)
22687
87330 (284.94%)
Test#3 (Generic, ZIP)
8735
20715 (137.14%)
Test#1 (Memory)
3696
6325 (71.14%)
TOTAL
68268
206271 (202.15%)

Performance/W
i7-4500U
i7-6820HQ
Test#1 (Integers)
2210 points/W
2042 points/W
Test#2 (FP)
1512 points/W
1941 points/W
Test#3 (Generic, ZIP)
582 points/W
460 points/W
Test#1 (Memory)
246 points/W
141 points/W
TOTAL
4551 points/W
4584 points/W

Performance/GHz
i7-4500U
i7-6820HQ
Test#1 (Integers)
5742 points/GHz
5874 points/GHz
Test#2 (FP)
3018 points/GHz
5184 points/GHz
Test#3 (Generic, ZIP)
1344 points/GHz
1211 points/GHz
Test#1 (Memory)
1208 points/GHz
1733 points/GHz
TOTAL
11311 points/GHz
14002 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