Core i5-6400 vs i7-920
Description
The i5-6400 is based on Skylake architecture while the i7-920 is based on Nehalem Westmere.
Using the multithread performance as a reference, the i5-6400 gets a score of 129.5 k points while the i7-920 gets 47.2 k points.
Summarizing, the i5-6400 is 2.7 times faster than the i7-920 . To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i5-6400 gets a score of 129.5 k points while the i7-920 gets 47.2 k points.
Summarizing, the i5-6400 is 2.7 times faster than the i7-920 . To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
506e3
106a5
Core
Skylake-S
Bloomfield
Base frecuency
2.7 GHz
2.667 GHz
Boost frecuency
3.3 GHz
2.993 GHz
Socket
LGA 1151
LGA 1366
Cores/Threads
4/4
4/8
TDP
65 W
130 W
Cache L1 (d+i)
4x32+4x32 kB
32+32 kB
Cache L2
4x256 kB
256 kB
Cache L3
6144 kB
8192 kB
Date
September 2015
November 2008
Mean monothread perf.
48.05k points
16.33k points
Mean multithread perf.
174.05k points
47.2k 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
i7-920
Test#1 (Integers)
3.2k
1.97k (x0.61)
Test#2 (FP)
12.81k
4.43k (x0.35)
Test#3 (Generic, ZIP)
4.18k
2.75k (x0.66)
Test#1 (Memory)
4.3k
2.53k (x0.59)
TOTAL
24.49k
11.68k (x0.48)
Multithread
i5-6400
i7-920
Test#1 (Integers)
11.45k
7.71k (x0.67)
Test#2 (FP)
46.67k
18.81k (x0.4)
Test#3 (Generic, ZIP)
14.69k
13.76k (x0.94)
Test#1 (Memory)
5.92k
5.07k (x0.86)
TOTAL
78.73k
45.34k (x0.58)
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
i7-920
Test#1 (Integers)
11.56k
6.12k (x0.53)
Test#2 (FP)
16.53k
4.76k (x0.29)
Test#3 (Generic, ZIP)
4.3k
2.78k (x0.65)
Test#1 (Memory)
3.97k
2.67k (x0.67)
TOTAL
36.36k
16.33k (x0.45)
Multithread
i5-6400
i7-920
Test#1 (Integers)
43.01k
19.26k (x0.45)
Test#2 (FP)
64.46k
14.96k (x0.23)
Test#3 (Generic, ZIP)
16.14k
8.05k (x0.5)
Test#1 (Memory)
5.91k
4.92k (x0.83)
TOTAL
129.51k
47.2k (x0.36)
Performance/W
i5-6400
i7-920
Test#1 (Integers)
662 points/W
148 points/W
Test#2 (FP)
992 points/W
115 points/W
Test#3 (Generic, ZIP)
248 points/W
62 points/W
Test#1 (Memory)
91 points/W
38 points/W
TOTAL
1992 points/W
363 points/W
Performance/GHz
i5-6400
i7-920
Test#1 (Integers)
3503 points/GHz
2044 points/GHz
Test#2 (FP)
5009 points/GHz
1591 points/GHz
Test#3 (Generic, ZIP)
1302 points/GHz
930 points/GHz
Test#1 (Memory)
1203 points/GHz
891 points/GHz
TOTAL
11018 points/GHz
5457 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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Hardlimit Benchmark Central - Ver. 3.11.4