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Core 2 Duo E8400 vs Core i3-7100


Description
The E8400 is based on Core architecture while the i3-7100 is based on Kaby Lake.

Using the multithread performance as a reference, the E8400 gets a score of 27.1 k points while the i3-7100 gets 94.6 k points.

Summarizing, the i3-7100 is 3.5 times faster than the E8400 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
1067a
906e9
Core
Wolfdale
Kaby Lake-S
Architecture
Base frecuency
3 GHz
3.9 GHz
Socket
LGA 775
LGA 1151
Cores/Threads
2/2
2/4
TDP
65 W
51 W
Cache L1 (d+i)
2x32+2x32 kB
2x32+2x32 kB
Cache L2
6144 kB
2x256 kB
Cache L3
0 kB
3072 kB
Date
January 2008
January 2017
Mean monothread perf.
17.28k points
57.86k points
Mean multithread perf.
27.11k points
124.8k 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
E8400
i3-7100
Test#1 (Integers)
2.47k
4.01k (x1.62)
Test#2 (FP)
6.74k
16.38k (x2.43)
Test#3 (Generic, ZIP)
2.87k
5.31k (x1.85)
Test#1 (Memory)
4.47k
3.98k (x0.89)
TOTAL
16.55k
29.69k (x1.79)

Multithread

E8400

i3-7100
Test#1 (Integers)
4.64k
8.1k (x1.75)
Test#2 (FP)
12.36k
38.7k (x3.13)
Test#3 (Generic, ZIP)
4.86k
12.69k (x2.61)
Test#1 (Memory)
1.96k
3.76k (x1.91)
TOTAL
23.82k
63.24k (x2.66)

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
E8400
i3-7100
Test#1 (Integers)
3.3k
14.04k (x4.26)
Test#2 (FP)
7.28k
20.55k (x2.82)
Test#3 (Generic, ZIP)
2.88k
5.41k (x1.88)
Test#1 (Memory)
3.83k
3.99k (x1.04)
TOTAL
17.28k
43.99k (x2.54)

Multithread

E8400

i3-7100
Test#1 (Integers)
6.3k
30.09k (x4.78)
Test#2 (FP)
13.71k
47.84k (x3.49)
Test#3 (Generic, ZIP)
5.32k
13.13k (x2.47)
Test#1 (Memory)
1.78k
3.52k (x1.98)
TOTAL
27.11k
94.59k (x3.49)

Performance/W
E8400
i3-7100
Test#1 (Integers)
97 points/W
590 points/W
Test#2 (FP)
211 points/W
938 points/W
Test#3 (Generic, ZIP)
82 points/W
258 points/W
Test#1 (Memory)
27 points/W
69 points/W
TOTAL
417 points/W
1855 points/W

Performance/GHz
E8400
i3-7100
Test#1 (Integers)
1099 points/GHz
3601 points/GHz
Test#2 (FP)
2426 points/GHz
5268 points/GHz
Test#3 (Generic, ZIP)
959 points/GHz
1386 points/GHz
Test#1 (Memory)
1278 points/GHz
1024 points/GHz
TOTAL
5762 points/GHz
11279 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