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Core i3-1115G4 vs Xeon E5645


Description
The i3-1115G4 is based on Tiger Lake architecture while the E5645 is based on Westmere.

Using the multithread performance as a reference, the i3-1115G4 gets a score of 101.4 k points while the E5645 gets 77 k points.

Summarizing, the i3-1115G4 is 1.3 times faster than the E5645 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806c1
206c2
Core
Tiger Lake UP3
Westmere-EP
Architecture
Base frecuency
3 GHz
2.4 GHz
Boost frecuency
4.1 GHz
2.8 GHz
Socket
BGA1449
LGA 1366
Cores/Threads
2/4
6 /6
TDP
28 W
80 W
Cache L1 (d+i)
2x32+2x48 kB
64 kB
Cache L2
2x1280 kB
256 kB
Cache L3
6144 kB
12288 kB
Date
September 2020
March 2010
Mean monothread perf.
62.19k points
15.64k points
Mean multithread perf.
137.96k points
76.96k 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
i3-1115G4
E5645
Test#1 (Integers)
3.75k
1.78k (x0.47)
Test#2 (FP)
17.22k
3.91k (x0.23)
Test#3 (Generic, ZIP)
9.79k
2.52k (x0.26)
Test#1 (Memory)
8.21k
2.42k (x0.29)
TOTAL
38.97k
10.64k (x0.27)

Multithread

i3-1115G4

E5645
Test#1 (Integers)
9.19k
9.67k (x1.05)
Test#2 (FP)
35.47k
22.92k (x0.65)
Test#3 (Generic, ZIP)
19.14k
14.31k (x0.75)
Test#1 (Memory)
5.82k
3.81k (x0.65)
TOTAL
69.62k
50.7k (x0.73)

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
i3-1115G4
E5645
Test#1 (Integers)
12.9k
6.47k (x0.5)
Test#2 (FP)
21.4k
4.4k (x0.21)
Test#3 (Generic, ZIP)
10.73k
2.43k (x0.23)
Test#1 (Memory)
8.16k
2.33k (x0.29)
TOTAL
53.19k
15.64k (x0.29)

Multithread

i3-1115G4

E5645
Test#1 (Integers)
30.31k
34.43k (x1.14)
Test#2 (FP)
45.13k
24.23k (x0.54)
Test#3 (Generic, ZIP)
20.17k
14.48k (x0.72)
Test#1 (Memory)
5.77k
3.81k (x0.66)
TOTAL
101.38k
76.96k (x0.76)

Performance/W
i3-1115G4
E5645
Test#1 (Integers)
1082 points/W
430 points/W
Test#2 (FP)
1612 points/W
303 points/W
Test#3 (Generic, ZIP)
720 points/W
181 points/W
Test#1 (Memory)
206 points/W
48 points/W
TOTAL
3621 points/W
962 points/W

Performance/GHz
i3-1115G4
E5645
Test#1 (Integers)
3147 points/GHz
2311 points/GHz
Test#2 (FP)
5219 points/GHz
1573 points/GHz
Test#3 (Generic, ZIP)
2616 points/GHz
867 points/GHz
Test#1 (Memory)
1991 points/GHz
833 points/GHz
TOTAL
12974 points/GHz
5584 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