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Core i7-920 vs i3-8100


Description
The i7-920 is based on Nehalem Westmere architecture while the i3-8100 is based on Coffee Lake.

Using the multithread performance as a reference, the i7-920 gets a score of 47.2 k points while the i3-8100 gets 152.9 k points.

Summarizing, the i3-8100 is 3.2 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
906eb
Core
Bloomfield
Coffee Lake-S
Architecture
Nehalem Westmere
Base frecuency
2.667 GHz
3.6 GHz
Boost frecuency
2.993 GHz
3.6 GHz
Socket
LGA 1366
LGA 1151
Cores/Threads
4/8
4/4
TDP
130 W
65 W
Cache L1 (d+i)
32+32 kB
4x32+4x32 kB
Cache L2
256 kB
4x256 kB
Cache L3
8192 kB
6144 kB
Date
November 2008
October 2017
Mean monothread perf.
16.33k points
59.18k points
Mean multithread perf.
47.2k points
200.4k 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
i3-8100
Test#1 (Integers)
1.97k
3.72k (x1.89)
Test#2 (FP)
4.43k
15.33k (x3.46)
Test#3 (Generic, ZIP)
2.75k
4.71k (x1.71)
Test#1 (Memory)
2.53k
6.76k (x2.67)
TOTAL
11.68k
30.52k (x2.61)

Multithread

i7-920

i3-8100
Test#1 (Integers)
7.71k
14.48k (x1.88)
Test#2 (FP)
18.81k
59.59k (x3.17)
Test#3 (Generic, ZIP)
13.76k
18.07k (x1.31)
Test#1 (Memory)
5.07k
4.3k (x0.85)
TOTAL
45.34k
96.43k (x2.13)

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
i3-8100
Test#1 (Integers)
6.12k
13.51k (x2.21)
Test#2 (FP)
4.76k
19.38k (x4.07)
Test#3 (Generic, ZIP)
2.78k
5.06k (x1.82)
Test#1 (Memory)
2.67k
7.87k (x2.95)
TOTAL
16.33k
45.81k (x2.8)

Multithread

i7-920

i3-8100
Test#1 (Integers)
19.26k
52.88k (x2.75)
Test#2 (FP)
14.96k
75.92k (x5.07)
Test#3 (Generic, ZIP)
8.05k
19.52k (x2.43)
Test#1 (Memory)
4.92k
4.53k (x0.92)
TOTAL
47.2k
152.86k (x3.24)

Performance/W
i7-920
i3-8100
Test#1 (Integers)
148 points/W
814 points/W
Test#2 (FP)
115 points/W
1168 points/W
Test#3 (Generic, ZIP)
62 points/W
300 points/W
Test#1 (Memory)
38 points/W
70 points/W
TOTAL
363 points/W
2352 points/W

Performance/GHz
i7-920
i3-8100
Test#1 (Integers)
2044 points/GHz
3753 points/GHz
Test#2 (FP)
1591 points/GHz
5383 points/GHz
Test#3 (Generic, ZIP)
930 points/GHz
1405 points/GHz
Test#1 (Memory)
891 points/GHz
2185 points/GHz
TOTAL
5457 points/GHz
12725 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