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Core i5-6400 vs Xeon X5670


Description
The i5-6400 is based on Skylake architecture while the X5670 is based on Westmere.

Using the multithread performance as a reference, the i5-6400 gets a score of 129.5 k points while the X5670 gets 115.4 k points.

Summarizing, the i5-6400 is 1.1 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
2.7 GHz
2.933 GHz
Boost frecuency
3.3 GHz
3.333 GHz
Socket
LGA 1151
LGA 1366
Cores/Threads
4/4
6 /6
TDP
65 W
95 W
Cache L1 (d+i)
4x32+4x32 kB
64 kB
Cache L2
4x256 kB
256 kB
Cache L3
6144 kB
12288 kB
Date
September 2015
March 2010
Mean monothread perf.
48.05k points
20.26k points
Mean multithread perf.
174.05k 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
i5-6400
X5670
Test#1 (Integers)
11.56k
8.35k (x0.72)
Test#2 (FP)
16.53k
5.58k (x0.34)
Test#3 (Generic, ZIP)
4.3k
3.32k (x0.77)
Test#1 (Memory)
3.97k
3k (x0.76)
TOTAL
36.36k
20.26k (x0.56)

Multithread

i5-6400

X5670
Test#1 (Integers)
43.01k
49.72k (x1.16)
Test#2 (FP)
64.46k
35.19k (x0.55)
Test#3 (Generic, ZIP)
16.14k
21.88k (x1.36)
Test#1 (Memory)
5.91k
8.6k (x1.46)
TOTAL
129.51k
115.4k (x0.89)

Performance/W
i5-6400
X5670
Test#1 (Integers)
662 points/W
523 points/W
Test#2 (FP)
992 points/W
370 points/W
Test#3 (Generic, ZIP)
248 points/W
230 points/W
Test#1 (Memory)
91 points/W
91 points/W
TOTAL
1992 points/W
1215 points/W

Performance/GHz
i5-6400
X5670
Test#1 (Integers)
3503 points/GHz
2506 points/GHz
Test#2 (FP)
5009 points/GHz
1675 points/GHz
Test#3 (Generic, ZIP)
1302 points/GHz
997 points/GHz
Test#1 (Memory)
1203 points/GHz
900 points/GHz
TOTAL
11018 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