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Core i5-2400 vs i7-4790K


Description
The i5-2400 is based on Sandy Bridge architecture while the i7-4790K is based on Haswell.

Using the multithread performance as a reference, the i5-2400 gets a score of 84.4 k points while the i7-4790K gets 164.4 k points.

Summarizing, the i7-4790K is 1.9 times faster than the i5-2400 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
206a7
306c3
Core
Sandy Bridge
Haswell
Architecture
Base frecuency
3.1 GHz
4 GHz
Boost frecuency
3.4 GHz
4.4 GHz
Socket
LGA 1155
LGA 1150
Cores/Threads
4/4
4/8
TDP
95 W
88 W
Cache L1 (d+i)
4x32+x4x32 kB
32+32 kB
Cache L2
4x256 kB
256 kB
Cache L3
6144 kB
8192 kB
Date
January 2011
May 2014
Mean monothread perf.
25.49k points
52.47k points
Mean multithread perf.
84.36k points
215.47k 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
i5-2400
i7-4790K
Test#1 (Integers)
2.72k
5.06k (x1.86)
Test#2 (FP)
7.6k
12.63k (x1.66)
Test#3 (Generic, ZIP)
3.98k
5.81k (x1.46)
Test#1 (Memory)
4.47k
4.96k (x1.11)
TOTAL
18.78k
28.47k (x1.52)

Multithread

i5-2400

i7-4790K
Test#1 (Integers)
10.37k
18.28k (x1.76)
Test#2 (FP)
28.84k
64.07k (x2.22)
Test#3 (Generic, ZIP)
15.08k
27.52k (x1.83)
Test#1 (Memory)
4.67k
7.97k (x1.71)
TOTAL
58.95k
117.84k (x2)

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
i5-2400
i7-4790K
Test#1 (Integers)
9.16k
15.8k (x1.72)
Test#2 (FP)
8.2k
14.35k (x1.75)
Test#3 (Generic, ZIP)
3.95k
5.97k (x1.51)
Test#1 (Memory)
4.17k
5.17k (x1.24)
TOTAL
25.49k
41.29k (x1.62)

Multithread

i5-2400

i7-4790K
Test#1 (Integers)
34.74k
62.79k (x1.81)
Test#2 (FP)
31.07k
66.48k (x2.14)
Test#3 (Generic, ZIP)
14.86k
26.35k (x1.77)
Test#1 (Memory)
3.69k
8.74k (x2.37)
TOTAL
84.36k
164.36k (x1.95)

Performance/W
i5-2400
i7-4790K
Test#1 (Integers)
366 points/W
713 points/W
Test#2 (FP)
327 points/W
755 points/W
Test#3 (Generic, ZIP)
156 points/W
299 points/W
Test#1 (Memory)
39 points/W
99 points/W
TOTAL
888 points/W
1868 points/W

Performance/GHz
i5-2400
i7-4790K
Test#1 (Integers)
2695 points/GHz
3591 points/GHz
Test#2 (FP)
2411 points/GHz
3260 points/GHz
Test#3 (Generic, ZIP)
1163 points/GHz
1358 points/GHz
Test#1 (Memory)
1228 points/GHz
1174 points/GHz
TOTAL
7497 points/GHz
9383 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