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Core i7-4820K vs Xeon E5-1620 v2


Description
Both models i7-4820K and E5-1620 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 E5-1620 v2 gets 144.6 k points.

Summarizing, the E5-1620 v2 is 1.1 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
Architecture
Base frecuency
3.7 GHz
3.7 GHz
Boost frecuency
3.9 GHz
3.9 GHz
Socket
LGA 1155
LGA 2011
Cores/Threads
4/8
4 /8
TDP
130 W
130 W
Cache L1 (d+i)
32+32 kB
4x32+x4x32 kB
Cache L2
256 kB
4x256 kB
Cache L3
8192 kB
10240 kB
Date
September 2013
September 2013
Mean monothread perf.
32.49k points
34.37k points
Mean multithread perf.
134.08k points
144.57k 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
E5-1620 v2
Test#1 (Integers)
11.85k
12.55k (x1.06)
Test#2 (FP)
11.84k
12.14k (x1.03)
Test#3 (Generic, ZIP)
4.69k
4.83k (x1.03)
Test#1 (Memory)
4.12k
4.85k (x1.18)
TOTAL
32.49k
34.37k (x1.06)

Multithread

i7-4820K

E5-1620 v2
Test#1 (Integers)
47.65k
51.93k (x1.09)
Test#2 (FP)
54.81k
56.7k (x1.03)
Test#3 (Generic, ZIP)
21.56k
23.81k (x1.1)
Test#1 (Memory)
10.05k
12.14k (x1.21)
TOTAL
134.08k
144.57k (x1.08)

Performance/W
i7-4820K
E5-1620 v2
Test#1 (Integers)
367 points/W
399 points/W
Test#2 (FP)
422 points/W
436 points/W
Test#3 (Generic, ZIP)
166 points/W
183 points/W
Test#1 (Memory)
77 points/W
93 points/W
TOTAL
1031 points/W
1112 points/W

Performance/GHz
i7-4820K
E5-1620 v2
Test#1 (Integers)
3039 points/GHz
3217 points/GHz
Test#2 (FP)
3035 points/GHz
3113 points/GHz
Test#3 (Generic, ZIP)
1201 points/GHz
1238 points/GHz
Test#1 (Memory)
1056 points/GHz
1244 points/GHz
TOTAL
8331 points/GHz
8812 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