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Xeon E5-2620 v4 vs Celeron 3855U


Description
The E5-2620 v4 is based on Broadwell architecture while the 3855U is based on Skylake.

Using the multithread performance as a reference, the E5-2620 v4 gets a score of 182.4 k points while the 3855U gets 24.6 k points.

Summarizing, the E5-2620 v4 is 7.4 times faster than the 3855U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
406f1
406e3
Core
Broadwell-EP
Skylake-U
Architecture
Base frecuency
2.1 GHz
1.6 GHz
Boost frecuency
3 GHz
1.6 GHz
Socket
Socket 2011-3
BGA1356
Cores/Threads
8/16
2/2
TDP
85 W
15 W
Cache L1 (d+i)
8x32+8x32 kB
2x32+2x32 kB
Cache L2
8x256 kB
2x256 kB
Cache L3
20480 kB
2096 kB
Date
March 2016
December 2015
Mean monothread perf.
29.39k points
19.24k points
Mean multithread perf.
237.83k points
24.56k 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
E5-2620 v4
3855U
Test#1 (Integers)
2.6k
1.64k (x0.63)
Test#2 (FP)
7.55k
6.72k (x0.89)
Test#3 (Generic, ZIP)
2.61k
2.06k (x0.79)
Test#1 (Memory)
2.03k
2.4k (x1.19)
TOTAL
14.79k
12.83k (x0.87)

Multithread

E5-2620 v4

3855U
Test#1 (Integers)
17.41k
2.2k (x0.13)
Test#2 (FP)
75.46k
9.59k (x0.13)
Test#3 (Generic, ZIP)
26.25k
2.76k (x0.11)
Test#1 (Memory)
4.65k
2.27k (x0.49)
TOTAL
123.78k
16.81k (x0.14)

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
E5-2620 v4
3855U
Test#1 (Integers)
8.22k
5.93k (x0.72)
Test#2 (FP)
12.06k
8.53k (x0.71)
Test#3 (Generic, ZIP)
4.01k
2.28k (x0.57)
Test#1 (Memory)
2.89k
2.5k (x0.86)
TOTAL
27.18k
19.24k (x0.71)

Multithread

E5-2620 v4

3855U
Test#1 (Integers)
61.34k
7.87k (x0.13)
Test#2 (FP)
90.21k
11.28k (x0.13)
Test#3 (Generic, ZIP)
26.2k
2.91k (x0.11)
Test#1 (Memory)
4.62k
2.5k (x0.54)
TOTAL
182.37k
24.56k (x0.13)

Performance/W
E5-2620 v4
3855U
Test#1 (Integers)
722 points/W
524 points/W
Test#2 (FP)
1061 points/W
752 points/W
Test#3 (Generic, ZIP)
308 points/W
194 points/W
Test#1 (Memory)
54 points/W
166 points/W
TOTAL
2146 points/W
1637 points/W

Performance/GHz
E5-2620 v4
3855U
Test#1 (Integers)
2739 points/GHz
3706 points/GHz
Test#2 (FP)
4021 points/GHz
5333 points/GHz
Test#3 (Generic, ZIP)
1335 points/GHz
1423 points/GHz
Test#1 (Memory)
963 points/GHz
1562 points/GHz
TOTAL
9059 points/GHz
12024 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