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Core i5-2400 vs i7-6600U


Description
The i5-2400 is based on Sandy Bridge architecture while the i7-6600U is based on Skylake.

Using the multithread performance as a reference, the i5-2400 gets a score of 84.4 k points while the i7-6600U gets 45.1 k points.

Summarizing, the i5-2400 is 1.9 times faster than the i7-6600U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
206a7
406e3
Core
Sandy Bridge
Skylake-U
Architecture
Base frecuency
3.1 GHz
2.6 GHz
Boost frecuency
3.4 GHz
3.4 GHz
Socket
LGA 1155
BGA1356
Cores/Threads
4/4
2/4
TDP
95 W
15 W
Cache L1 (d+i)
4x32+x4x32 kB
2x32+2x32 kB
Cache L2
4x256 kB
2x256 kB
Cache L3
6144 kB
4096 kB
Date
January 2011
September 2015
Mean monothread perf.
25.49k points
39.73k points
Mean multithread perf.
84.36k points
79.22k 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
i7-6600U
Test#1 (Integers)
2.72k
2.75k (x1.01)
Test#2 (FP)
7.6k
12.23k (x1.61)
Test#3 (Generic, ZIP)
3.98k
3.9k (x0.98)
Test#1 (Memory)
4.47k
5.61k (x1.25)
TOTAL
18.78k
24.48k (x1.3)

Multithread

i5-2400

i7-6600U
Test#1 (Integers)
10.37k
5.23k (x0.5)
Test#2 (FP)
28.84k
25k (x0.87)
Test#3 (Generic, ZIP)
15.08k
8.98k (x0.6)
Test#1 (Memory)
4.67k
4.73k (x1.01)
TOTAL
58.95k
43.95k (x0.75)

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
i7-6600U
Test#1 (Integers)
9.16k
8.49k (x0.93)
Test#2 (FP)
8.2k
10.92k (x1.33)
Test#3 (Generic, ZIP)
3.95k
2.76k (x0.7)
Test#1 (Memory)
4.17k
4.93k (x1.18)
TOTAL
25.49k
27.1k (x1.06)

Multithread

i5-2400

i7-6600U
Test#1 (Integers)
34.74k
14.11k (x0.41)
Test#2 (FP)
31.07k
20.05k (x0.65)
Test#3 (Generic, ZIP)
14.86k
6.17k (x0.41)
Test#1 (Memory)
3.69k
4.73k (x1.28)
TOTAL
84.36k
45.05k (x0.53)

Performance/W
i5-2400
i7-6600U
Test#1 (Integers)
366 points/W
940 points/W
Test#2 (FP)
327 points/W
1337 points/W
Test#3 (Generic, ZIP)
156 points/W
411 points/W
Test#1 (Memory)
39 points/W
315 points/W
TOTAL
888 points/W
3004 points/W

Performance/GHz
i5-2400
i7-6600U
Test#1 (Integers)
2695 points/GHz
2497 points/GHz
Test#2 (FP)
2411 points/GHz
3211 points/GHz
Test#3 (Generic, ZIP)
1163 points/GHz
813 points/GHz
Test#1 (Memory)
1228 points/GHz
1449 points/GHz
TOTAL
7497 points/GHz
7970 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