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Core i9-10900K vs Xeon E5-2651 v2


Description
The i9-10900K is based on Comet Lake architecture while the E5-2651 v2 is based on Ivy Bridge.

Using the multithread performance as a reference, the i9-10900K gets a score of 608.8 k points while the E5-2651 v2 gets 415 k points.

Summarizing, the i9-10900K is 1.5 times faster than the E5-2651 v2. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a0655
306e4
Core
Comet Lake-S
Ivy Bridge-EP
Architecture
Base frecuency
3.7 GHz
1.8 GHz
Boost frecuency
5.2 GHz
2.2 GHz
Socket
LGA 1200
LGA 2011
Cores/Threads
10/20
12/24
TDP
125 W
W
Cache L1 (d+i)
10x32+10x32 kB
12x32+12x32 kB
Cache L2
10x256 kB
12x256 kB
Cache L3
20480 kB
30720 kB
Date
April 2020
October 2013
Mean monothread perf.
80.41k points
17.75k points
Mean multithread perf.
685.65k points
426.18k 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
i9-10900K
E5-2651 v2
Test#1 (Integers)
19.5k
6.75k (x0.35)
Test#2 (FP)
28.01k
6.05k (x0.22)
Test#3 (Generic, ZIP)
7.45k
2.61k (x0.35)
Test#1 (Memory)
15.82k
2.26k (x0.14)
TOTAL
70.79k
17.68k (x0.25)

Multithread

i9-10900K

E5-2651 v2
Test#1 (Integers)
194.49k
168.18k (x0.86)
Test#2 (FP)
312.59k
159.6k (x0.51)
Test#3 (Generic, ZIP)
89.14k
77.04k (x0.86)
Test#1 (Memory)
12.58k
10.19k (x0.81)
TOTAL
608.81k
415.01k (x0.68)

Performance/W
i9-10900K
E5-2651 v2
Test#1 (Integers)
1556 points/W