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Core i5-6400 vs i7-950


Description
The i5-6400 is based on Skylake architecture while the i7-950 is based on Westmere.

Using the multithread performance as a reference, the i5-6400 gets a score of 129.5 k points while the i7-950 gets 76.3 k points.

Summarizing, the i5-6400 is 1.7 times faster than the i7-950 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
106a5
Core
Skylake-S
Bloomfield
Architecture
Base frecuency
2.7 GHz
3.066 GHz
Boost frecuency
3.3 GHz
3.333 GHz
Socket
LGA 1151
LGA 1366
Cores/Threads
4/4
4/4
TDP
65 W
130 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
256 kB
Cache L3
6144 kB
8192 kB
Date
September 2015
June 2009
Mean monothread perf.
48.05k points
19.46k points
Mean multithread perf.
174.05k points
76.29k 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
i7-950
Test#1 (Integers)
11.56k
8.01k (x0.69)
Test#2 (FP)
16.53k
5.38k (x0.33)
Test#3 (Generic, ZIP)
4.3k
3.11k (x0.72)
Test#1 (Memory)
3.97k
2.96k (x0.75)
TOTAL
36.36k
19.46k (x0.54)

Multithread

i5-6400

i7-950
Test#1 (Integers)
43.01k
31.53k (x0.73)
Test#2 (FP)
64.46k
24.16k (x0.37)
Test#3 (Generic, ZIP)
16.14k
15.84k (x0.98)
Test#1 (Memory)
5.91k
4.75k (x0.8)
TOTAL
129.51k
76.29k (x0.59)

Performance/W
i5-6400
i7-950
Test#1 (Integers)
662 points/W
243 points/W
Test#2 (FP)
992 points/W
186 points/W
Test#3 (Generic, ZIP)
248 points/W
122 points/W
Test#1 (Memory)
91 points/W
37 points/W
TOTAL
1992 points/W
587 points/W

Performance/GHz
i5-6400
i7-950
Test#1 (Integers)
3503 points/GHz
2403 points/GHz
Test#2 (FP)
5009 points/GHz
1614 points/GHz
Test#3 (Generic, ZIP)
1302 points/GHz
934 points/GHz
Test#1 (Memory)
1203 points/GHz
888 points/GHz
TOTAL
11018 points/GHz
5839 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