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Core i3-6100U vs Core 2 Duo E7400


Description
The i3-6100U is based on Skylake architecture while the E7400 is based on Core.

Using the multithread performance as a reference, the i3-6100U gets a score of 50.2 k points while the E7400 gets 25.7 k points.

Summarizing, the i3-6100U is 2 times faster than the E7400 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
406e3
1067a
Core
Skylake-U
Wolfdale
Architecture
Base frecuency
2.3 GHz
2.8 GHz
Socket
BGA1356
LGA 775
Cores/Threads
2/4
2/2
TDP
15 W
65 W
Cache L1 (d+i)
2x32+2x32 kB
32+32 kB
Cache L2
2x256 kB
3072 kB
Cache L3
3072 kB
0 kB
Date
September 2015
October 2008
Mean monothread perf.
30.73k points
14.31k points
Mean multithread perf.
69.94k points
25.71k 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
i3-6100U
E7400
Test#1 (Integers)
2.27k
2.54k (x1.12)
Test#2 (FP)
9.18k
6.56k (x0.72)
Test#3 (Generic, ZIP)
2.97k
2.73k (x0.92)
Test#1 (Memory)
3.79k
1.83k (x0.48)
TOTAL
18.21k
13.66k (x0.75)

Multithread

i3-6100U

E7400
Test#1 (Integers)
4.79k
5.08k (x1.06)
Test#2 (FP)
23.04k
13.07k (x0.57)
Test#3 (Generic, ZIP)
7.55k
5.52k (x0.73)
Test#1 (Memory)
3.86k
1.62k (x0.42)
TOTAL
39.24k
25.29k (x0.64)

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
i3-6100U
E7400
Test#1 (Integers)
7.99k
3.19k (x0.4)
Test#2 (FP)
11.82k
7.02k (x0.59)
Test#3 (Generic, ZIP)
2.97k
2.71k (x0.91)
Test#1 (Memory)
3.75k
1.39k (x0.37)
TOTAL
26.52k
14.31k (x0.54)

Multithread

i3-6100U

E7400
Test#1 (Integers)
15.44k
6.02k (x0.39)
Test#2 (FP)
23.79k
13.23k (x0.56)
Test#3 (Generic, ZIP)
6.93k
5.12k (x0.74)
Test#1 (Memory)
4.03k
1.34k (x0.33)
TOTAL
50.19k
25.71k (x0.51)

Performance/W
i3-6100U
E7400
Test#1 (Integers)
1029 points/W
93 points/W
Test#2 (FP)
1586 points/W
204 points/W
Test#3 (Generic, ZIP)
462 points/W
79 points/W
Test#1 (Memory)
269 points/W
21 points/W
TOTAL
3346 points/W
396 points/W

Performance/GHz
i3-6100U
E7400
Test#1 (Integers)
3474 points/GHz
1139 points/GHz
Test#2 (FP)
5137 points/GHz
2507 points/GHz
Test#3 (Generic, ZIP)
1290 points/GHz
969 points/GHz
Test#1 (Memory)
1631 points/GHz
496 points/GHz
TOTAL
11532 points/GHz
5111 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