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Core i7-930 vs i5-6400


Description
The i7-930 is based on Westmere architecture while the i5-6400 is based on Skylake.

Using the multithread performance as a reference, the i7-930 gets a score of 69.4 k points while the i5-6400 gets 129.5 k points.

Summarizing, the i5-6400 is 1.9 times faster than the i7-930 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
106a5
506e3
Core
Bloomfield
Skylake-S
Architecture
Base frecuency
2.8 GHz
2.7 GHz
Boost frecuency
3.067 GHz
3.3 GHz
Socket
LGA 1366
LGA 1151
Cores/Threads
4/8
4/4
TDP
130 W
65 W
Cache L1 (d+i)
32+32 kB
4x32+4x32 kB
Cache L2
256 kB
4x256 kB
Cache L3
8192 kB
6144 kB
Date
February 2010
September 2015
Mean monothread perf.
17.58k points
48.05k points
Mean multithread perf.
69.39k points
174.05k 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
i7-930
i5-6400
Test#1 (Integers)
1.94k
3.2k (x1.65)
Test#2 (FP)
4.38k
12.81k (x2.92)
Test#3 (Generic, ZIP)
2.64k
4.18k (x1.58)
Test#1 (Memory)
2.41k
4.3k (x1.79)
TOTAL
11.37k
24.49k (x2.15)

Multithread

i7-930

i5-6400
Test#1 (Integers)
7.3k
11.45k (x1.57)
Test#2 (FP)
19.36k
46.67k (x2.41)
Test#3 (Generic, ZIP)
13.43k
14.69k (x1.09)
Test#1 (Memory)
2.01k
5.92k (x2.95)
TOTAL
42.11k
78.73k (x1.87)

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
i7-930
i5-6400
Test#1 (Integers)
7.28k
11.56k (x1.59)
Test#2 (FP)
4.82k
16.53k (x3.43)
Test#3 (Generic, ZIP)
2.86k
4.3k (x1.5)
Test#1 (Memory)
2.62k
3.97k (x1.51)
TOTAL
17.58k
36.36k (x2.07)

Multithread

i7-930

i5-6400
Test#1 (Integers)
28.09k
43.01k (x1.53)
Test#2 (FP)
21.62k
64.46k (x2.98)
Test#3 (Generic, ZIP)
14.83k
16.14k (x1.09)
Test#1 (Memory)
4.85k
5.91k (x1.22)
TOTAL
69.39k
129.51k (x1.87)

Performance/W
i7-930
i5-6400
Test#1 (Integers)
216 points/W
662 points/W
Test#2 (FP)
166 points/W
992 points/W
Test#3 (Generic, ZIP)
114 points/W
248 points/W
Test#1 (Memory)
37 points/W
91 points/W
TOTAL
534 points/W
1992 points/W

Performance/GHz
i7-930
i5-6400
Test#1 (Integers)
2372 points/GHz
3503 points/GHz
Test#2 (FP)
1571 points/GHz
5009 points/GHz
Test#3 (Generic, ZIP)
933 points/GHz
1302 points/GHz
Test#1 (Memory)
855 points/GHz
1203 points/GHz
TOTAL
5732 points/GHz
11018 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