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Core i5-6400 vs i7-860


Description
The i5-6400 is based on Skylake architecture while the i7-860 is based on Nehalem.

Using the multithread performance as a reference, the i5-6400 gets a score of 129.5 k points while the i7-860 gets 75.4 k points.

Summarizing, the i5-6400 is 1.7 times faster than the i7-860 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
106e5
Core
Skylake-S
Lynnfield
Architecture
Base frecuency
2.7 GHz
2.8 GHz
Boost frecuency
3.3 GHz
3.467 GHz
Socket
LGA 1151
LGA 1156
Cores/Threads
4/4
4/8
TDP
65 W
95 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
6144 kB
8192 kB
Date
September 2015
September 2009
Mean monothread perf.
48.05k points
19.19k points
Mean multithread perf.
174.05k points
75.43k 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
i7-860
Test#1 (Integers)
3.2k
2.15k (x0.67)
Test#2 (FP)
12.81k
4.87k (x0.38)
Test#3 (Generic, ZIP)
4.18k
2.82k (x0.68)
Test#1 (Memory)
4.3k
3.13k (x0.73)
TOTAL
24.49k
12.97k (x0.53)

Multithread

i5-6400

i7-860
Test#1 (Integers)
11.45k
8.24k (x0.72)
Test#2 (FP)
46.67k
21.63k (x0.46)
Test#3 (Generic, ZIP)
14.69k
14.65k (x1)
Test#1 (Memory)
5.92k
5.02k (x0.85)
TOTAL
78.73k
49.54k (x0.63)

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
i7-860
Test#1 (Integers)
11.56k
7.87k (x0.68)
Test#2 (FP)
16.53k
5.25k (x0.32)
Test#3 (Generic, ZIP)
4.3k
2.94k (x0.68)
Test#1 (Memory)
3.97k
3.13k (x0.79)
TOTAL
36.36k
19.19k (x0.53)

Multithread

i5-6400

i7-860
Test#1 (Integers)
43.01k
31.5k (x0.73)
Test#2 (FP)
64.46k
23.47k (x0.36)
Test#3 (Generic, ZIP)
16.14k
15.47k (x0.96)
Test#1 (Memory)
5.91k
4.98k (x0.84)
TOTAL
129.51k
75.43k (x0.58)

Performance/W
i5-6400
i7-860
Test#1 (Integers)
662 points/W
332 points/W
Test#2 (FP)
992 points/W
247 points/W
Test#3 (Generic, ZIP)
248 points/W
163 points/W
Test#1 (Memory)
91 points/W
52 points/W
TOTAL
1992 points/W
794 points/W

Performance/GHz
i5-6400
i7-860
Test#1 (Integers)
3503 points/GHz
2271 points/GHz
Test#2 (FP)
5009 points/GHz
1514 points/GHz
Test#3 (Generic, ZIP)
1302 points/GHz
847 points/GHz
Test#1 (Memory)
1203 points/GHz
902 points/GHz
TOTAL
11018 points/GHz
5534 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