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Celeron 3855U vs Xeon E5-2620 v4


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

Using the multithread performance as a reference, the 3855U gets a score of 24.6 k points while the E5-2620 v4 gets 182.4 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
406e3
406f1
Core
Skylake-U
Broadwell-EP
Architecture
Base frecuency
1.6 GHz
2.1 GHz
Boost frecuency
1.6 GHz
3 GHz
Socket
BGA1356
Socket 2011-3
Cores/Threads
2/2
8/16
TDP
15 W
85 W
Cache L1 (d+i)
2x32+2x32 kB
8x32+8x32 kB
Cache L2
2x256 kB
8x256 kB
Cache L3
2096 kB
20480 kB
Date
December 2015
March 2016
Mean monothread perf.
19.24k points
29.39k points
Mean multithread perf.
24.56k points
237.83k 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
3855U
E5-2620 v4
Test#1 (Integers)
1.64k
2.6k (x1.58)
Test#2 (FP)
6.72k
7.55k (x1.12)
Test#3 (Generic, ZIP)
2.06k
2.61k (x1.27)
Test#1 (Memory)
2.4k
2.03k (x0.84)
TOTAL
12.83k
14.79k (x1.15)

Multithread

3855U

E5-2620 v4
Test#1 (Integers)
2.2k
17.41k (x7.93)
Test#2 (FP)
9.59k
75.46k (x7.87)
Test#3 (Generic, ZIP)
2.76k
26.25k (x9.52)
Test#1 (Memory)
2.27k
4.65k (x2.05)
TOTAL
16.81k
123.78k (x7.36)

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
3855U
E5-2620 v4
Test#1 (Integers)
5.93k
8.22k (x1.39)
Test#2 (FP)
8.53k
12.06k (x1.41)
Test#3 (Generic, ZIP)
2.28k
4.01k (x1.76)
Test#1 (Memory)
2.5k
2.89k (x1.16)
TOTAL
19.24k
27.18k (x1.41)

Multithread

3855U

E5-2620 v4
Test#1 (Integers)
7.87k
61.34k (x7.8)
Test#2 (FP)
11.28k
90.21k (x8)
Test#3 (Generic, ZIP)
2.91k
26.2k (x9)
Test#1 (Memory)
2.5k
4.62k (x1.85)
TOTAL
24.56k
182.37k (x7.43)

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

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