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Core i5-6400 vs Xeon E5506


Description
The i5-6400 is based on Skylake architecture while the E5506 is based on Nehalem.

Using the multithread performance as a reference, the i5-6400 gets a score of 129.5 k points while the E5506 gets 90.4 k points.

Summarizing, the i5-6400 is 1.4 times faster than the E5506 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
106a5
Core
Skylake-S
Gainestown
Architecture
Base frecuency
2.7 GHz
2.133 GHz
Boost frecuency
3.3 GHz
2.133 GHz
Socket
LGA 1151
LGA 1366
Cores/Threads
4/4
4 /4
TDP
65 W
80 W
Cache L1 (d+i)
4x32+4x32 kB
64 kB
Cache L2
4x256 kB
256 kB
Cache L3
6144 kB
4096 kB
Date
September 2015
March 2009
Mean monothread perf.
48.05k points
9.97k points
Mean multithread perf.
174.05k points
90.45k points

Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
i5-6400
E5506
Test#1 (Integers)
3.2k
1.21k (x0.38)
Test#2 (FP)
12.81k
2.75k (x0.22)
Test#3 (Generic, ZIP)
4.18k
1.94k (x0.46)
Test#1 (Memory)
4.3k
0.78k (x0.18)
TOTAL
24.49k
6.68k (x0.27)

Multithread

i5-6400

E5506
Test#1 (Integers)
11.45k
12.25k (x1.07)
Test#2 (FP)
46.67k
25.55k (x0.55)
Test#3 (Generic, ZIP)
14.69k
17.1k (x1.16)
Test#1 (Memory)
5.92k
5.01k (x0.85)
TOTAL
78.73k
59.9k (x0.76)

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
E5506
Test#1 (Integers)
11.56k
4.48k (x0.39)
Test#2 (FP)
16.53k
2.99k (x0.18)
Test#3 (Generic, ZIP)
4.3k
1.81k (x0.42)
Test#1 (Memory)
3.97k
0.69k (x0.17)
TOTAL
36.36k
9.97k (x0.27)

Multithread

i5-6400

E5506
Test#1 (Integers)
43.01k
41k (x0.95)
Test#2 (FP)
64.46k
28.17k (x0.44)
Test#3 (Generic, ZIP)
16.14k
17.4k (x1.08)
Test#1 (Memory)
5.91k
3.88k (x0.66)
TOTAL
129.51k
90.45k (x0.7)

Performance/W
i5-6400
E5506
Test#1 (Integers)
662 points/W
513 points/W
Test#2 (FP)
992 points/W
352 points/W
Test#3 (Generic, ZIP)
248 points/W
217 points/W
Test#1 (Memory)
91 points/W
48 points/W
TOTAL
1992 points/W
1131 points/W

Performance/GHz
i5-6400
E5506
Test#1 (Integers)
3503 points/GHz
2099 points/GHz
Test#2 (FP)
5009 points/GHz
1404 points/GHz
Test#3 (Generic, ZIP)
1302 points/GHz
847 points/GHz
Test#1 (Memory)
1203 points/GHz
325 points/GHz
TOTAL
11018 points/GHz
4675 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