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Core i7-920 vs i3-6100


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

Using the multithread performance as a reference, the i7-920 gets a score of 47.2 k points while the i3-6100 gets 91.1 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
106a5
506e3
Core
Bloomfield
Skylake-S
Architecture
Nehalem Westmere
Base frecuency
2.667 GHz
3.7 GHz
Boost frecuency
2.993 GHz
3.7 GHz
Socket
LGA 1366
LGA 1151
Cores/Threads
4/8
2/2
TDP
130 W
51 W
Cache L1 (d+i)
32+32 kB
32+32 kB
Cache L2
256 kB
256 kB
Cache L3
8192 kB
4096 kB
Date
November 2008
September 2015
Mean monothread perf.
16.33k points
52.84k points
Mean multithread perf.
47.2k points
112.28k 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
i7-920
i3-6100
Test#1 (Integers)
1.97k
3.81k (x1.94)
Test#2 (FP)
4.43k
15.65k (x3.53)
Test#3 (Generic, ZIP)
2.75k
5.14k (x1.87)
Test#1 (Memory)
2.53k
4.28k (x1.69)
TOTAL
11.68k
28.89k (x2.47)

Multithread

i7-920

i3-6100
Test#1 (Integers)
7.71k
7.75k (x1.01)
Test#2 (FP)
18.81k
37.33k (x1.98)
Test#3 (Generic, ZIP)
13.76k
12.13k (x0.88)
Test#1 (Memory)
5.07k
3.56k (x0.7)
TOTAL
45.34k
60.77k (x1.34)

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
i7-920
i3-6100
Test#1 (Integers)
6.12k
13.76k (x2.25)
Test#2 (FP)
4.76k
19.96k (x4.19)
Test#3 (Generic, ZIP)
2.78k
5.44k (x1.95)
Test#1 (Memory)
2.67k
4.4k (x1.65)
TOTAL
16.33k
43.55k (x2.67)

Multithread

i7-920

i3-6100
Test#1 (Integers)
19.26k
28.99k (x1.51)
Test#2 (FP)
14.96k
45.75k (x3.06)
Test#3 (Generic, ZIP)
8.05k
12.72k (x1.58)
Test#1 (Memory)
4.92k
3.68k (x0.75)
TOTAL
47.2k
91.14k (x1.93)

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

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