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Core i7-4790K vs i7-7500U


Description
The i7-4790K is based on Haswell architecture while the i7-7500U is based on Kaby Lake.

Using the multithread performance as a reference, the i7-4790K gets a score of 219.5 k points while the i7-7500U gets 94.5 k points.

Summarizing, the i7-4790K is 2.3 times faster than the i7-7500U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
306c3
806e9
Core
Haswell
Kaby Lake-U
Architecture
Base frecuency
4 GHz
2.7 GHz
Boost frecuency
4.4 GHz
3.5 GHz
Socket
LGA 1150
BGA1356
Cores/Threads
4/8
2/4
TDP
88 W
15 W
Cache L1 (d+i)
32+32 kB
2x32+2x32 kB
Cache L2
256 kB
2x256 kB
Cache L3
8192 kB
4096 kB
Date
May 2014
August 2016

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
i7-4790K
i7-7500U
Test#1 (Integers)
5065
3525 (-30.39%)
Test#2 (FP)
12626
14669 (16.18%)
Test#3 (Generic, ZIP)
5815
4837 (-16.82%)
Test#1 (Memory)
4963
6256 (26.06%)
TOTAL
28468
29287 (2.88%)

Multithread

i7-4790K

i7-7500U
Test#1 (Integers)
18283
7263 (-60.28%)
Test#2 (FP)
64071
35040 (-45.31%)
Test#3 (Generic, ZIP)
27522
11276 (-59.03%)
Test#1 (Memory)
7970
5695 (-28.55%)
TOTAL
117844
59273 (-49.70%)

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
i7-4790K
i7-7500U
Test#1 (Integers)
15603
12932 (-17.12%)
Test#2 (FP)
13919
18628 (33.83%)
Test#3 (Generic, ZIP)
6125
5031 (-17.86%)
Test#1 (Memory)
5001
6163 (23.25%)
TOTAL
40647
42753 (5.18%)

Multithread

i7-4790K

i7-7500U
Test#1 (Integers)
65477
27132 (-58.56%)
Test#2 (FP)
63290
43194 (-31.75%)
Test#3 (Generic, ZIP)
27929
11703 (-58.10%)
Test#1 (Memory)
7841
4990 (-36.36%)
TOTAL
164537
87018 (-47.11%)

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
i7-4790K
i7-7500U
Test#1 (Integers)
15800
12707 (-19.58%)
Test#2 (FP)
14346
18607 (29.70%)
Test#3 (Generic, ZIP)
5974
4777 (-20.04%)
Test#1 (Memory)
5166
6633 (28.41%)
TOTAL
41285
42724 (3.48%)

Multithread

i7-4790K

i7-7500U
Test#1 (Integers)
62785
27271 (-56.57%)
Test#2 (FP)
66483
44704 (-32.76%)
Test#3 (Generic, ZIP)
26352
11329 (-57.01%)
Test#1 (Memory)
8739
5555 (-36.44%)
TOTAL
164359
88858 (-45.94%)

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
i7-4790K
i7-7500U
Test#1 (Integers)
26714
18546 (-30.58%)
Test#2 (FP)
15101
17229 (14.09%)
Test#3 (Generic, ZIP)
6186
4021 (-35.00%)
Test#1 (Memory)
5554
5166 (-6.98%)
TOTAL
53555
44962 (-16.05%)

Multithread

i7-4790K

i7-7500U
Test#1 (Integers)
109572
41322 (-62.29%)
Test#2 (FP)
71887
39231 (-45.43%)
Test#3 (Generic, ZIP)
28440
9164 (-67.78%)
Test#1 (Memory)
9603
4790 (-50.12%)
TOTAL
219503
94508 (-56.94%)

Performance/W
i7-4790K
i7-7500U
Test#1 (Integers)
1245 points/W
2755 points/W
Test#2 (FP)
817 points/W
2615 points/W
Test#3 (Generic, ZIP)
323 points/W
611 points/W
Test#1 (Memory)
109 points/W
319 points/W
TOTAL
2494 points/W
6301 points/W

Performance/GHz
i7-4790K
i7-7500U
Test#1 (Integers)
6071 points/GHz
5299 points/GHz
Test#2 (FP)
3432 points/GHz
4923 points/GHz
Test#3 (Generic, ZIP)
1406 points/GHz
1149 points/GHz
Test#1 (Memory)
1262 points/GHz
1476 points/GHz
TOTAL
12172 points/GHz
12846 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