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Core i7-6700K vs Xeon E5-2680 v2


Description
The i7-6700K is based on Skylake architecture while the E5-2680 v2 is based on Ivy Bridge.

Using the multithread performance as a reference, the i7-6700K gets a score of 197.1 k points while the E5-2680 v2 gets 537 k points.

Summarizing, the E5-2680 v2 is 2.7 times faster than the i7-6700K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
306e4
Core
Skylake-S
Ivy Bridge-EP
Architecture
Base frecuency
4 GHz
2.8 GHz
Boost frecuency
4.2 GHz
3.6 GHz
Socket
LGA 1151
LGA 2011
Cores/Threads
4/8
10 /20
TDP
95 W
115 W
Cache L1 (d+i)
4x32+4x32 kB
10x32+10x32 kB
Cache L2
256 kB
10x256 kB
Cache L3
8192 kB
25600 kB
Date
May 2015
September 2013
Mean monothread perf.
63.22k points
28.23k points
Mean multithread perf.
254.56k points
551.1k 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
i7-6700K
E5-2680 v2
Test#1 (Integers)
14.73k
11.96k (x0.81)
Test#2 (FP)
21.27k
10.73k (x0.5)
Test#3 (Generic, ZIP)
5.52k
4.59k (x0.83)
Test#1 (Memory)
6.32k
4.31k (x0.68)
TOTAL
47.84k
31.6k (x0.66)

Multithread

i7-6700K

E5-2680 v2
Test#1 (Integers)
61.09k
218.24k (x3.57)
Test#2 (FP)
99.17k
206.92k (x2.09)
Test#3 (Generic, ZIP)
26.57k
100.37k (x3.78)
Test#1 (Memory)
10.26k
11.45k (x1.12)
TOTAL
197.09k
536.99k (x2.72)

Performance/W
i7-6700K
E5-2680 v2
Test#1 (Integers)
643 points/W
1898 points/W
Test#2 (FP)
1044 points/W
1799 points/W
Test#3 (Generic, ZIP)
280 points/W
873 points/W
Test#1 (Memory)
108 points/W
100 points/W
TOTAL
2075 points/W
4669 points/W

Performance/GHz
i7-6700K
E5-2680 v2
Test#1 (Integers)
3508 points/GHz
3323 points/GHz
Test#2 (FP)
5065 points/GHz
2982 points/GHz
Test#3 (Generic, ZIP)
1313 points/GHz
1275 points/GHz
Test#1 (Memory)
1505 points/GHz
1197 points/GHz
TOTAL
11391 points/GHz
8777 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