Xeon E5645 vs Core i7-8550U
Description
The E5645 is based on Westmere architecture while the i7-8550U is based on Kaby Lake.
Using the multithread performance as a reference, the E5645 gets a score of 77 k points while the i7-8550U gets 127.9 k points.
Summarizing, the i7-8550U is 1.7 times faster than the E5645 . To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the E5645 gets a score of 77 k points while the i7-8550U gets 127.9 k points.
Summarizing, the i7-8550U is 1.7 times faster than the E5645 . To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
206c2
806ea
Core
Westmere-EP
Kaby Lake-R
Base frecuency
2.4 GHz
1.8 GHz
Boost frecuency
2.8 GHz
4 GHz
Socket
LGA 1366
BGA1356
Cores/Threads
6 /6
4/8
TDP
80 W
15 W
Cache L1 (d+i)
64 kB
4x32+4x32 kB
Cache L2
256 kB
4x256 kB
Cache L3
12288 kB
8192 kB
Date
March 2010
August 2017
Mean monothread perf.
15.64k points
64.2k points
Mean multithread perf.
76.96k points
166.12k 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
E5645
i7-8550U
Test#1 (Integers)
1.78k
3.91k (x2.2)
Test#2 (FP)
3.91k
15.98k (x4.09)
Test#3 (Generic, ZIP)
2.52k
5.11k (x2.03)
Test#1 (Memory)
2.42k
11.05k (x4.56)
TOTAL
10.64k
36.05k (x3.39)
Multithread
E5645
i7-8550U
Test#1 (Integers)
9.67k
11.76k (x1.22)
Test#2 (FP)
22.92k
50.15k (x2.19)
Test#3 (Generic, ZIP)
14.31k
16.76k (x1.17)
Test#1 (Memory)
3.81k
4.17k (x1.09)
TOTAL
50.7k
82.84k (x1.63)
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
E5645
i7-8550U
Test#1 (Integers)
6.47k
12.93k (x2)
Test#2 (FP)
4.4k
20.59k (x4.68)
Test#3 (Generic, ZIP)
2.43k
5.41k (x2.23)
Test#1 (Memory)
2.33k
10.48k (x4.49)
TOTAL
15.64k
49.41k (x3.16)
Multithread
E5645
i7-8550U
Test#1 (Integers)
34.43k
41.11k (x1.19)
Test#2 (FP)
24.23k
65.04k (x2.68)
Test#3 (Generic, ZIP)
14.48k
17.53k (x1.21)
Test#1 (Memory)
3.81k
4.22k (x1.11)
TOTAL
76.96k
127.9k (x1.66)
Performance/W
E5645
i7-8550U
Test#1 (Integers)
430 points/W
2741 points/W
Test#2 (FP)
303 points/W
4336 points/W
Test#3 (Generic, ZIP)
181 points/W
1169 points/W
Test#1 (Memory)
48 points/W
281 points/W
TOTAL
962 points/W
8527 points/W
Performance/GHz
E5645
i7-8550U
Test#1 (Integers)
2311 points/GHz
3232 points/GHz
Test#2 (FP)
1573 points/GHz
5147 points/GHz
Test#3 (Generic, ZIP)
867 points/GHz
1353 points/GHz
Test#1 (Memory)
833 points/GHz
2620 points/GHz
TOTAL
5584 points/GHz
12351 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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Hardlimit Benchmark Central - Ver. 3.11.4