Core i7-920 vs i5-6400
Description
The i7-920 is based on Nehalem Westmere architecture while the i5-6400 is based on Skylake.
Using the multithread performance as a reference, the i7-920 gets a score of 47.2 k points while the i5-6400 gets 129.5 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 i7-920 gets a score of 47.2 k points while the i5-6400 gets 129.5 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
106a5
506e3
Core
Bloomfield
Skylake-S
Base frecuency
2.667 GHz
2.7 GHz
Boost frecuency
2.993 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
November 2008
September 2015
Mean monothread perf.
16.33k points
48.05k points
Mean multithread perf.
47.2k 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
i7-920
i5-6400
Test#1 (Integers)
1.97k
3.2k (x1.63)
Test#2 (FP)
4.43k
12.81k (x2.89)
Test#3 (Generic, ZIP)
2.75k
4.18k (x1.52)
Test#1 (Memory)
2.53k
4.3k (x1.7)
TOTAL
11.68k
24.49k (x2.1)
Multithread
i7-920
i5-6400
Test#1 (Integers)
7.71k
11.45k (x1.49)
Test#2 (FP)
18.81k
46.67k (x2.48)
Test#3 (Generic, ZIP)
13.76k
14.69k (x1.07)
Test#1 (Memory)
5.07k
5.92k (x1.17)
TOTAL
45.34k
78.73k (x1.74)
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
i7-920
i5-6400
Test#1 (Integers)
6.12k
11.56k (x1.89)
Test#2 (FP)
4.76k
16.53k (x3.47)
Test#3 (Generic, ZIP)
2.78k
4.3k (x1.54)
Test#1 (Memory)
2.67k
3.97k (x1.49)
TOTAL
16.33k
36.36k (x2.23)
Multithread
i7-920
i5-6400
Test#1 (Integers)
19.26k
43.01k (x2.23)
Test#2 (FP)
14.96k
64.46k (x4.31)
Test#3 (Generic, ZIP)
8.05k
16.14k (x2.01)
Test#1 (Memory)
4.92k
5.91k (x1.2)
TOTAL
47.2k
129.51k (x2.74)
Performance/W
i7-920
i5-6400
Test#1 (Integers)
148 points/W
662 points/W
Test#2 (FP)
115 points/W
992 points/W
Test#3 (Generic, ZIP)
62 points/W
248 points/W
Test#1 (Memory)
38 points/W
91 points/W
TOTAL
363 points/W
1992 points/W
Performance/GHz
i7-920
i5-6400
Test#1 (Integers)
2044 points/GHz
3503 points/GHz
Test#2 (FP)
1591 points/GHz
5009 points/GHz
Test#3 (Generic, ZIP)
930 points/GHz
1302 points/GHz
Test#1 (Memory)
891 points/GHz
1203 points/GHz
TOTAL
5457 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.
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