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Core i7-4790 vs i7-4720HQ


Description
Both models i7-4790 and i7-4720HQ are based on Haswell architecture.

"Haswell is known as fourth-generation core too. It uses 22nm Tri-Gate FinFET (non-planar, ""3D"") technology. It includes four arithmetic logic unit (ALU) and three address generation unit (AGU). This generation is able to run Advanced Vector Extensions 2 (AVX2) instruction set among BMI1, BMI2, ABM and FMA3. At this time, Intel used new sockets: LGA 1150 for desktops and BGA1364 for the mobile CPUs."

Using the multithread performance as a reference, the i7-4790 gets a score of 185.2 k points while the i7-4720HQ gets 132.3 k points.

Summarizing, the i7-4790 is 1.4 times faster than the i7-4720HQ. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
306c3
306c3
Core
Haswell
Haswell
Architecture
Base frecuency
3.6 GHz
2.6 GHz
Boost frecuency
4 GHz
3.6 GHz
Socket
LGA 1150
BGA1364
Cores/Threads
4/8
4/8
TDP
84 W
47 W
Cache L1 (d+i)
32+32 kB
4x32+4x32 kB
Cache L2
256 kB
4x256 kB
Cache L3
8192 kB
6144 kB
Date
May 2014
January 2015
Mean monothread perf.
46.05k points
40.12k points
Mean multithread perf.
185.17k points
132.35k 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
i7-4720HQ
Test#1 (Integers)
4.51k
3.79k (x0.84)
Test#2 (FP)
11.24k
9.64k (x0.86)
Test#3 (Generic, ZIP)
5.03k
4.34k (x0.86)
Test#1 (Memory)
5.02k
3.76k (x0.75)
TOTAL
25.8k
21.53k (x0.83)

Multithread

i7-4790

i7-4720HQ
Test#1 (Integers)
15.72k
11.66k (x0.74)
Test#2 (FP)
54.99k
37.71k (x0.69)
Test#3 (Generic, ZIP)
23.87k
16.38k (x0.69)
Test#1 (Memory)
5.48k
5.94k (x1.08)
TOTAL
100.06k
71.69k (x0.72)

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
i7-4720HQ
Test#1 (Integers)
23.15k
20.68k (x0.89)
Test#2 (FP)
12.52k
10.28k (x0.82)
Test#3 (Generic, ZIP)
5.25k
4.87k (x0.93)
Test#1 (Memory)
5.14k
4.29k (x0.83)
TOTAL
46.05k
40.12k (x0.87)

Multithread

i7-4790

i7-4720HQ
Test#1 (Integers)
93.6k
66.84k (x0.71)
Test#2 (FP)
61.34k
42.85k (x0.7)
Test#3 (Generic, ZIP)
24.11k
16.77k (x0.7)
Test#1 (Memory)
6.13k
5.88k (x0.96)
TOTAL
185.17k
132.35k (x0.71)

Performance/W
i7-4790
i7-4720HQ
Test#1 (Integers)
1114 points/W
1422 points/W
Test#2 (FP)
730 points/W
912 points/W
Test#3 (Generic, ZIP)
287 points/W
357 points/W
Test#1 (Memory)
73 points/W
125 points/W
TOTAL
2204 points/W
2816 points/W

Performance/GHz
i7-4790
i7-4720HQ
Test#1 (Integers)
5786 points/GHz
5745 points/GHz
Test#2 (FP)
3129 points/GHz
2856 points/GHz
Test#3 (Generic, ZIP)
1313 points/GHz
1352 points/GHz
Test#1 (Memory)
1284 points/GHz
1191 points/GHz
TOTAL
11512 points/GHz
11143 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