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Core i7-3770K vs i5-8400


Description
The i7-3770K is based on Ivy Bridge architecture while the i5-8400 is based on Coffee Lake.

Using the multithread performance as a reference, the i7-3770K gets a score of 97.4 k points while the i5-8400 gets 139 k points.

Summarizing, the i5-8400 is 1.4 times faster than the i7-3770K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
306a9
906ea
Core
Ivy Bridge
Coffee Lake-S
Architecture
Base frecuency
3.5 GHz
2.8 GHz
Boost frecuency
3.9 GHz
4 GHz
Socket
LGA 1155
LGA 1151
Cores/Threads
4/8
6/6
TDP
77 W
65 W
Cache L1 (d+i)
4x62+4x32 kB
6x32+6x32 kB
Cache L2
4x256 kB
6x256 kB
Cache L3
8192 kB
9216 kB
Date
April 2012
September 2017
Mean monothread perf.
36.19k points
64.98k points
Mean multithread perf.
133.88k points
289.61k 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
i7-3770K
i5-8400
Test#1 (Integers)
3.86k
4.08k (x1.06)
Test#2 (FP)
10.79k
14.96k (x1.39)
Test#3 (Generic, ZIP)
4.9k
4.98k (x1.02)
Test#1 (Memory)
5.51k
10.29k (x1.87)
TOTAL
25.06k
34.31k (x1.37)

Multithread

i7-3770K

i5-8400
Test#1 (Integers)
17.17k
21.54k (x1.25)
Test#2 (FP)
46.25k
85.13k (x1.84)
Test#3 (Generic, ZIP)
23.67k
28.24k (x1.19)
Test#1 (Memory)
10.36k
4.08k (x0.39)
TOTAL
97.44k
139k (x1.43)

Performance/W
i7-3770K
i5-8400
Test#1 (Integers)
223 points/W
331 points/W
Test#2 (FP)
601 points/W
1310 points/W
Test#3 (Generic, ZIP)
307 points/W
434 points/W
Test#1 (Memory)
135 points/W
63 points/W
TOTAL
1265 points/W
2138 points/W

Performance/GHz
i7-3770K
i5-8400
Test#1 (Integers)
990 points/GHz
1021 points/GHz
Test#2 (FP)
2768 points/GHz
3739 points/GHz
Test#3 (Generic, ZIP)
1256 points/GHz
1246 points/GHz
Test#1 (Memory)
1412 points/GHz
2573 points/GHz
TOTAL
6426 points/GHz
8578 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