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Core i3-6100 vs i7-920


Description
The i3-6100 is based on Skylake architecture while the i7-920 is based on Nehalem Westmere.

Using the multithread performance as a reference, the i3-6100 gets a score of 91.1 k points while the i7-920 gets 47.2 k points.

Summarizing, the i3-6100 is 1.9 times faster than the i7-920 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
106a5
Core
Skylake-S
Bloomfield
Architecture
Skylake
Base frecuency
3.7 GHz
2.667 GHz
Boost frecuency
3.7 GHz
2.993 GHz
Socket
LGA 1151
LGA 1366
Cores/Threads
2/2
4/8
TDP
51 W
130 W
Cache L1 (d+i)
32+32 kB
32+32 kB
Cache L2
256 kB
256 kB
Cache L3
4096 kB
8192 kB
Date
September 2015
November 2008
Mean monothread perf.
52.84k points
16.33k points
Mean multithread perf.
112.28k points
47.2k 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
i7-920
Test#1 (Integers)
3.81k
1.97k (x0.52)
Test#2 (FP)
15.65k
4.43k (x0.28)
Test#3 (Generic, ZIP)
5.14k
2.75k (x0.54)
Test#1 (Memory)
4.28k
2.53k (x0.59)
TOTAL
28.89k
11.68k (x0.4)

Multithread

i3-6100

i7-920
Test#1 (Integers)
7.75k
7.71k (x0.99)
Test#2 (FP)
37.33k
18.81k (x0.5)
Test#3 (Generic, ZIP)
12.13k
13.76k (x1.13)
Test#1 (Memory)
3.56k
5.07k (x1.42)
TOTAL
60.77k
45.34k (x0.75)

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
i7-920
Test#1 (Integers)
13.76k
6.12k (x0.44)
Test#2 (FP)
19.96k
4.76k (x0.24)
Test#3 (Generic, ZIP)
5.44k
2.78k (x0.51)
Test#1 (Memory)
4.4k
2.67k (x0.61)
TOTAL
43.55k
16.33k (x0.38)

Multithread

i3-6100

i7-920
Test#1 (Integers)
28.99k
19.26k (x0.66)
Test#2 (FP)
45.75k
14.96k (x0.33)
Test#3 (Generic, ZIP)
12.72k
8.05k (x0.63)
Test#1 (Memory)
3.68k
4.92k (x1.34)
TOTAL
91.14k
47.2k (x0.52)

Performance/W
i3-6100
i7-920
Test#1 (Integers)
568 points/W
148 points/W
Test#2 (FP)
897 points/W
115 points/W
Test#3 (Generic, ZIP)
249 points/W
62 points/W
Test#1 (Memory)
72 points/W
38 points/W
TOTAL
1787 points/W
363 points/W

Performance/GHz
i3-6100
i7-920
Test#1 (Integers)
3719 points/GHz
2044 points/GHz
Test#2 (FP)
5393 points/GHz
1591 points/GHz
Test#3 (Generic, ZIP)
1469 points/GHz
930 points/GHz
Test#1 (Memory)
1189 points/GHz
891 points/GHz
TOTAL
11770 points/GHz
5457 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