Core i5-6400 vs Pentium G645
Description
The i5-6400 is based on Skylake architecture while the G645 is based on Sandy Bridge.
Using the multithread performance as a reference, the i5-6400 gets a score of 129.5 k points while the G645 gets 35.4 k points.
Summarizing, the i5-6400 is 3.7 times faster than the G645 . 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 G645 gets 35.4 k points.
Summarizing, the i5-6400 is 3.7 times faster than the G645 . To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
506e3
206a7
Core
Skylake-S
Sandy Bridge
Base frecuency
2.7 GHz
2.9 GHz
Boost frecuency
3.3 GHz
2.9 GHz
Socket
LGA 1151
LGA 1155
Cores/Threads
4/4
2/2
TDP
65 W
65 W
Cache L1 (d+i)
4x32+4x32 kB
2x32+2x32 kB
Cache L2
4x256 kB
2x256 kB
Cache L3
6144 kB
3072 kB
Date
September 2015
September 2012
Mean monothread perf.
48.05k points
22.24k points
Mean multithread perf.
174.05k points
35.38k 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
G645
Test#1 (Integers)
11.56k
8.66k (x0.75)
Test#2 (FP)
16.53k
6.9k (x0.42)
Test#3 (Generic, ZIP)
4.3k
3.48k (x0.81)
Test#1 (Memory)
3.97k
3.2k (x0.81)
TOTAL
36.36k
22.24k (x0.61)
Multithread
i5-6400
G645
Test#1 (Integers)
43.01k
14.06k (x0.33)
Test#2 (FP)
64.46k
11.82k (x0.18)
Test#3 (Generic, ZIP)
16.14k
5.83k (x0.36)
Test#1 (Memory)
5.91k
3.69k (x0.62)
TOTAL
129.51k
35.38k (x0.27)
Performance/W
i5-6400
G645
Test#1 (Integers)
662 points/W
216 points/W
Test#2 (FP)
992 points/W
182 points/W
Test#3 (Generic, ZIP)
248 points/W
90 points/W
Test#1 (Memory)
91 points/W
57 points/W
TOTAL
1992 points/W
544 points/W
Performance/GHz
i5-6400
G645
Test#1 (Integers)
3503 points/GHz
2987 points/GHz
Test#2 (FP)
5009 points/GHz
2380 points/GHz
Test#3 (Generic, ZIP)
1302 points/GHz
1199 points/GHz
Test#1 (Memory)
1203 points/GHz
1103 points/GHz
TOTAL
11018 points/GHz
7669 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