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Core i7-7560U vs Core 2 Quad Q8400


Description
The i7-7560U is based on Kaby Lake architecture while the Q8400 is based on Core.

Using the multithread performance as a reference, the i7-7560U gets a score of 88.4 k points while the Q8400 gets 51.9 k points.

Summarizing, the i7-7560U is 1.7 times faster than the Q8400 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806e9
1067a
Core
Kaby Lake-U
Yorkfield
Architecture
Base frecuency
2.4 GHz
2.666 GHz
Boost frecuency
3.8 GHz
2.666 GHz
Socket
BGA 1356
LGA 775
Cores/Threads
2/4
4/4
TDP
15 W
95 W
Cache L1 (d+i)
2x32+2x32 kB
128+128 kB
Cache L2
2x256 kB
4096 kB
Cache L3
4096 kB
0 kB
Date
January 2017
April 2009
Mean monothread perf.
48.16k points
14.04k points
Mean multithread perf.
97.27k points
51.92k 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
i7-7560U
Q8400
Test#1 (Integers)
3.56k
2.44k (x0.69)
Test#2 (FP)
12.71k
6.24k (x0.49)
Test#3 (Generic, ZIP)
3.93k
2.62k (x0.67)
Test#1 (Memory)
8.89k
1.43k (x0.16)
TOTAL
29.09k
12.73k (x0.44)

Multithread

i7-7560U

Q8400
Test#1 (Integers)
6.34k
9.71k (x1.53)
Test#2 (FP)
29.51k
24.81k (x0.84)
Test#3 (Generic, ZIP)
8.94k
10.51k (x1.17)
Test#1 (Memory)
14.72k
2.03k (x0.14)
TOTAL
59.51k
47.05k (x0.79)

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
i7-7560U
Q8400
Test#1 (Integers)
12.78k
3.08k (x0.24)
Test#2 (FP)
18.79k
6.8k (x0.36)
Test#3 (Generic, ZIP)
4.72k
2.73k (x0.58)
Test#1 (Memory)
8.95k
1.42k (x0.16)
TOTAL
45.24k
14.04k (x0.31)

Multithread

i7-7560U

Q8400
Test#1 (Integers)
23.04k
12.25k (x0.53)
Test#2 (FP)
40.07k
26.84k (x0.67)
Test#3 (Generic, ZIP)
10.08k
10.82k (x1.07)
Test#1 (Memory)
15.24k
2.02k (x0.13)
TOTAL
88.42k
51.92k (x0.59)

Performance/W
i7-7560U
Q8400
Test#1 (Integers)
1536 points/W
129 points/W
Test#2 (FP)
2671 points/W
283 points/W
Test#3 (Generic, ZIP)
672 points/W
114 points/W
Test#1 (Memory)
1016 points/W
21 points/W
TOTAL
5894 points/W
547 points/W

Performance/GHz
i7-7560U
Q8400
Test#1 (Integers)
3364 points/GHz
1157 points/GHz
Test#2 (FP)
4946 points/GHz
2551 points/GHz
Test#3 (Generic, ZIP)
1241 points/GHz
1025 points/GHz
Test#1 (Memory)
2355 points/GHz
532 points/GHz
TOTAL
11905 points/GHz
5265 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