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Core i7-6700K vs Xeon X5670


Description
The i7-6700K is based on Skylake architecture while the X5670 is based on Westmere.

Using the multithread performance as a reference, the i7-6700K gets a score of 197.1 k points while the X5670 gets 115.4 k points.

Summarizing, the i7-6700K is 1.7 times faster than the X5670 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
206c2
Core
Skylake-S
Westmere-EP
Architecture
Base frecuency
4 GHz
2.933 GHz
Boost frecuency
4.2 GHz
3.333 GHz
Socket
LGA 1151
LGA 1366
Cores/Threads
4/8
6 /6
TDP
95 W
95 W
Cache L1 (d+i)
4x32+4x32 kB
64 kB
Cache L2
256 kB
256 kB
Cache L3
8192 kB
12288 kB
Date
May 2015
March 2010
Mean monothread perf.
63.22k points
20.26k points
Mean multithread perf.
254.56k points
115.4k 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
X5670
Test#1 (Integers)
14.73k
8.35k (x0.57)
Test#2 (FP)
21.27k
5.58k (x0.26)
Test#3 (Generic, ZIP)
5.52k
3.32k (x0.6)
Test#1 (Memory)
6.32k
3k (x0.47)
TOTAL
47.84k
20.26k (x0.42)

Multithread

i7-6700K

X5670
Test#1 (Integers)
61.09k
49.72k (x0.81)
Test#2 (FP)
99.17k
35.19k (x0.35)
Test#3 (Generic, ZIP)
26.57k
21.88k (x0.82)
Test#1 (Memory)
10.26k
8.6k (x0.84)
TOTAL
197.09k
115.4k (x0.59)

Performance/W
i7-6700K
X5670
Test#1 (Integers)
643 points/W
523 points/W
Test#2 (FP)
1044 points/W
370 points/W
Test#3 (Generic, ZIP)
280 points/W
230 points/W
Test#1 (Memory)
108 points/W
91 points/W
TOTAL
2075 points/W
1215 points/W

Performance/GHz
i7-6700K
X5670
Test#1 (Integers)
3508 points/GHz
2506 points/GHz
Test#2 (FP)
5065 points/GHz
1675 points/GHz
Test#3 (Generic, ZIP)
1313 points/GHz
997 points/GHz
Test#1 (Memory)
1505 points/GHz
900 points/GHz
TOTAL
11391 points/GHz
6078 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