| | | | | | |

Xeon E5-2651 v2 vs Core i5-1235U


Description
The E5-2651 v2 is based on Ivy Bridge architecture while the i5-1235U is based on Alder Lake.

Using the multithread performance as a reference, the E5-2651 v2 gets a score of 426.2 k points while the i5-1235U gets 301.6 k points.

Summarizing, the E5-2651 v2 is 1.4 times faster than the i5-1235U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
306e4
906a4
Core
Ivy Bridge-EP
Alder Lake-U
Architecture
Base frecuency
1.8 GHz
3.3 GHz
Boost frecuency
2.2 GHz
4.4 GHz
Socket
LGA 2011
BGA 1700
Cores/Threads
12/24
10/12
TDP
W
15 W
Cache L1 (d+i)
12x32+12x32 kB
2x32/8x64+2x48/8x32 kB
Cache L2
12x256 kB
1x1280+4x2048 kB
Cache L3
30720 kB
12288 kB
Date
October 2013
April 2022
Mean monothread perf.
17.75k points
81.64k points
Mean multithread perf.
426.18k points
297.46k points

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
E5-2651 v2
i5-1235U
Test#1 (Integers)
6.75k
23.53k (x3.48)
Test#2 (FP)
6.05k
23.51k (x3.88)
Test#3 (Generic, ZIP)
2.61k
14.71k (x5.64)
Test#1 (Memory)
2.26k
13.24k (x5.85)
TOTAL
17.68k
74.99k (x4.24)

Multithread

E5-2651 v2

i5-1235U
Test#1 (Integers)
168.18k
106.07k (x0.63)
Test#2 (FP)
159.6k
115.88k (x0.73)
Test#3 (Generic, ZIP)
77.04k
60.53k (x0.79)
Test#1 (Memory)
10.19k
5.88k (x0.58)
TOTAL
415.01k
288.36k (x0.69)

AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
E5-2651 v2
i5-1235U
Test#1 (Integers)
6.69k
23.03k (x3.44)
Test#2 (FP)
6.35k
24.11k (x3.8)
Test#3 (Generic, ZIP)
2.54k
13.9k (x5.47)
Test#1 (Memory)
2.17k
12.11k (x5.58)
TOTAL
17.75k
73.15k (x4.12)

Multithread

E5-2651 v2

i5-1235U
Test#1 (Integers)
165.17k
111.78k (x0.68)
Test#2 (FP)
176.85k
124.18k (x0.7)
Test#3 (Generic, ZIP)
73.91k
59.87k (x0.81)
Test#1 (Memory)
10.25k
5.76k (x0.56)
TOTAL
426.18k
301.58k (x0.71)

Performance/W
E5-2651 v2
i5-1235U
Test#1 (Integers)