| | | | | | |

Core i3-6100 vs Core 2 Quad Q8400


Description
The i3-6100 is based on Skylake architecture while the Q8400 is based on Core.

Using the multithread performance as a reference, the i3-6100 gets a score of 91.1 k points while the Q8400 gets 51.9 k points.

Summarizing, the i3-6100 is 1.8 times faster than the Q8400 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
1067a
Core
Skylake-S
Yorkfield
Architecture
Base frecuency
3.7 GHz
2.666 GHz
Socket
LGA 1151
LGA 775
Cores/Threads
2/2
4/4
TDP
51 W
95 W
Cache L1 (d+i)
32+32 kB
128+128 kB
Cache L2
256 kB
4096 kB
Cache L3
4096 kB
0 kB
Date
September 2015
April 2009
Mean monothread perf.
52.84k points
14.04k points
Mean multithread perf.
112.28k points
51.92k 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
i3-6100
Q8400
Test#1 (Integers)
3.81k
2.44k (x0.64)
Test#2 (FP)
15.65k
6.24k (x0.4)
Test#3 (Generic, ZIP)
5.14k
2.62k (x0.51)
Test#1 (Memory)
4.28k
1.43k (x0.33)
TOTAL
28.89k
12.73k (x0.44)

Multithread

i3-6100

Q8400
Test#1 (Integers)
7.75k
9.71k (x1.25)
Test#2 (FP)
37.33k
24.81k (x0.66)
Test#3 (Generic, ZIP)
12.13k
10.51k (x0.87)
Test#1 (Memory)
3.56k
2.03k (x0.57)
TOTAL
60.77k
47.05k (x0.77)

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
i3-6100
Q8400
Test#1 (Integers)
13.76k
3.08k (x0.22)
Test#2 (FP)
19.96k
6.8k (x0.34)
Test#3 (Generic, ZIP)
5.44k
2.73k (x0.5)
Test#1 (Memory)
4.4k
1.42k (x0.32)
TOTAL
43.55k
14.04k (x0.32)

Multithread

i3-6100

Q8400
Test#1 (Integers)
28.99k
12.25k (x0.42)
Test#2 (FP)
45.75k
26.84k (x0.59)
Test#3 (Generic, ZIP)
12.72k
10.82k (x0.85)
Test#1 (Memory)
3.68k
2.02k (x0.55)
TOTAL
91.14k
51.92k (x0.57)

Performance/W
i3-6100
Q8400
Test#1 (Integers)
568 points/W
129 points/W
Test#2 (FP)
897 points/W
283 points/W
Test#3 (Generic, ZIP)
249 points/W
114 points/W
Test#1 (Memory)
72 points/W
21 points/W
TOTAL
1787 points/W
547 points/W

Performance/GHz
i3-6100
Q8400
Test#1 (Integers)
3719 points/GHz
1157 points/GHz
Test#2 (FP)
5393 points/GHz
2551 points/GHz
Test#3 (Generic, ZIP)
1469 points/GHz
1025 points/GHz
Test#1 (Memory)
1189 points/GHz
532 points/GHz
TOTAL
11770 points/GHz
5265 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