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Core i7-4790K vs i7-4790


Description
Both models i7-4790K and i7-4790 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 i7-4790K gets a score of 219.5 k points while the i7-4790 gets 191.7 k points.

Summarizing, the i7-4790K is 1.1 times faster than the i7-4790 . 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
4 GHz
3.6 GHz
Boost frecuency
4.4 GHz
4 GHz
Socket
LGA 1150
LGA 1150
Cores/Threads
4/8
4/8
TDP
88 W
84 W
Cache L1 (d+i)
32+32 kB
32+32 kB
Cache L2
256 kB
256 kB
Cache L3
8192 kB
8192 kB
Date
May 2014
May 2014

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
i7-4790
Test#1 (Integers)
5065
4532 (-10.51%)
Test#2 (FP)
12626
11241 (-10.97%)
Test#3 (Generic, ZIP)
5815
5068 (-12.85%)
Test#1 (Memory)
4963
4640 (-6.51%)
TOTAL
28468
25481 (-10.49%)

Multithread

i7-4790K

i7-4790
Test#1 (Integers)
18283
15772 (-13.73%)
Test#2 (FP)
64071
55237 (-13.79%)
Test#3 (Generic, ZIP)
27522
24154 (-12.23%)
Test#1 (Memory)
7970
5759 (-27.74%)
TOTAL
117844
100923 (-14.36%)

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
i7-4790
Test#1 (Integers)
15603
13619 (-12.72%)
Test#2 (FP)
13919
12112 (-12.98%)
Test#3 (Generic, ZIP)
6125
5259 (-14.13%)
Test#1 (Memory)
5001
4575 (-8.51%)
TOTAL
40647
35565 (-12.50%)

Multithread

i7-4790K

i7-4790
Test#1 (Integers)
65477
56096 (-14.33%)
Test#2 (FP)
63290
55018 (-13.07%)
Test#3 (Generic, ZIP)
27929
24955 (-10.65%)
Test#1 (Memory)
7841
6598 (-15.86%)
TOTAL
164537
142666 (-13.29%)

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
i7-4790
Test#1 (Integers)
15800
13992 (-11.45%)
Test#2 (FP)
14346
12853 (-10.41%)
Test#3 (Generic, ZIP)
5974
5373 (-10.06%)
Test#1 (Memory)
5166
4910 (-4.94%)
TOTAL
41285
37128 (-10.07%)

Multithread

i7-4790K

i7-4790
Test#1 (Integers)
62785
57834 (-7.89%)
Test#2 (FP)
66483
61912 (-6.88%)
Test#3 (Generic, ZIP)
26352
24422 (-7.32%)
Test#1 (Memory)
8739
7361 (-15.77%)
TOTAL
164359
151529 (-7.81%)

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
i7-4790
Test#1 (Integers)
26714
23288 (-12.82%)
Test#2 (FP)
15101
12577 (-16.71%)
Test#3 (Generic, ZIP)
6186
5408 (-12.58%)
Test#1 (Memory)
5554
4995 (-10.07%)
TOTAL
53555
46268 (-13.61%)

Multithread

i7-4790K

i7-4790
Test#1 (Integers)
109572
96887 (-11.58%)
Test#2 (FP)
71887
62902 (-12.50%)
Test#3 (Generic, ZIP)
28440
25201 (-11.39%)
Test#1 (Memory)
9603
6741 (-29.80%)
TOTAL
219503
191731 (-12.65%)

Performance/W
i7-4790K
i7-4790
Test#1 (Integers)
1245 points/W
1153 points/W
Test#2 (FP)
817 points/W
749 points/W
Test#3 (Generic, ZIP)
323 points/W
300 points/W
Test#1 (Memory)
109 points/W
80 points/W
TOTAL
2494 points/W
2283 points/W

Performance/GHz
i7-4790K
i7-4790
Test#1 (Integers)
6071 points/GHz
5822 points/GHz
Test#2 (FP)
3432 points/GHz
3144 points/GHz
Test#3 (Generic, ZIP)
1406 points/GHz
1352 points/GHz
Test#1 (Memory)
1262 points/GHz
1249 points/GHz
TOTAL
12172 points/GHz
11567 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