Core i7-4820K vs Xeon E5-2651 v2
Description
Both models i7-4820K and E5-2651 v2 are based on Ivy Bridge architecture.
"Ivy Bridge is the last Intel microarchitecture for which there is official driver support for Windows XP . It is made under 22 nm Tri-Gate transistor (""3D"") technology and is basically a Sandy Bridge shrink. It has PCI Express 3.0 support and RdRand instruction for security tasks."
Using the multithread performance as a reference, the i7-4820K gets a score of 134.1 k points while the E5-2651 v2 gets 426.2 k points.
Summarizing, the E5-2651 v2 is 3.2 times faster than the i7-4820K . To get a proper comparison between both models, take a look to the data shown below.
"Ivy Bridge is the last Intel microarchitecture for which there is official driver support for Windows XP . It is made under 22 nm Tri-Gate transistor (""3D"") technology and is basically a Sandy Bridge shrink. It has PCI Express 3.0 support and RdRand instruction for security tasks."
Using the multithread performance as a reference, the i7-4820K gets a score of 134.1 k points while the E5-2651 v2 gets 426.2 k points.
Summarizing, the E5-2651 v2 is 3.2 times faster than the i7-4820K . To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
306e4
306e4
Core
Ivy Bridge -E
Ivy Bridge-EP
Base frecuency
3.7 GHz
1.8 GHz
Boost frecuency
3.9 GHz
2.2 GHz
Socket
LGA 1155
LGA 2011
Cores/Threads
4/8
12/24
TDP
130 W
W
Cache L1 (d+i)
32+32 kB
12x32+12x32 kB
Cache L2
256 kB
12x256 kB
Cache L3
8192 kB
30720 kB
Date
September 2013
October 2013
Mean monothread perf.
32.49k points
17.75k points
Mean multithread perf.
134.08k points
426.18k points
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
i7-4820K
E5-2651 v2
Test#1 (Integers)
11.85k
6.69k (x0.56)
Test#2 (FP)
11.84k
6.35k (x0.54)
Test#3 (Generic, ZIP)
4.69k
2.54k (x0.54)
Test#1 (Memory)
4.12k
2.17k (x0.53)
TOTAL
32.49k
17.75k (x0.55)
Multithread
i7-4820K
E5-2651 v2
Test#1 (Integers)
47.65k
165.17k (x3.47)
Test#2 (FP)
54.81k
176.85k (x3.23)
Test#3 (Generic, ZIP)
21.56k
73.91k (x3.43)
Test#1 (Memory)
10.05k
10.25k (x1.02)
TOTAL
134.08k
426.18k (x3.18)
Performance/W
i7-4820K
E5-2651 v2
Test#1 (Integers)
367 points/W