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Core i7-8700k vs i7-1280P


Description
The i7-8700k is based on Coffee Lake architecture while the i7-1280P is based on Alder Lake.

Using the multithread performance as a reference, the i7-8700k gets a score of 443.8 k points while the i7-1280P gets 468.3 k points.

Summarizing, the i7-1280P is 1.1 times faster than the i7-8700k. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ea
906a3
Core
Coffee Lake-S
Alder Lake-P
Architecture
Base frecuency
3.7 GHz
1.3 GHz
Boost frecuency
4.7 GHz
4.8 GHz
Socket
LGA 1151
BGA 1744
Cores/Threads
6/12
14/20
TDP
95 W
28 W
Cache L1 (d+i)
6x32+6x32 kB
6x32/8x64+6x48/8x32 kB
Cache L2
6x256 kB
6x1280+6x2048 kB
Cache L3
12288 kB
24576 kB
Date
October 2017
April 2022
Mean monothread perf.
80.6k points
91.45k points
Mean multithread perf.
443.77k points
468.3k 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
i7-8700k
i7-1280P
Test#1 (Integers)
4.13k
6.94k (x1.68)
Test#2 (FP)
16.96k
18.46k (x1.09)
Test#3 (Generic, ZIP)
5.56k
11.27k (x2.03)
Test#1 (Memory)
12.85k
13.6k (x1.06)
TOTAL
39.5k
50.27k (x1.27)

Multithread

i7-8700k

i7-1280P
Test#1 (Integers)
24.01k
44.01k (x1.83)
Test#2 (FP)
108.69k
125.05k (x1.15)
Test#3 (Generic, ZIP)
36.62k
76.28k (x2.08)
Test#1 (Memory)
9.33k
15.52k (x1.66)
TOTAL
178.64k
260.85k (x1.46)

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
i7-8700k
i7-1280P
Test#1 (Integers)
12.92k
22.72k (x1.76)
Test#2 (FP)
20.68k
23.88k (x1.15)
Test#3 (Generic, ZIP)
5.3k
12.75k (x2.41)
Test#1 (Memory)
12.59k
13.71k (x1.09)
TOTAL
51.48k
73.05k (x1.42)

Multithread

i7-8700k

i7-1280P
Test#1 (Integers)
94.26k
151.95k (x1.61)
Test#2 (FP)
152.55k
160.95k (x1.06)
Test#3 (Generic, ZIP)
39.74k
84.9k (x2.14)
Test#1 (Memory)
8.53k
15.91k (x1.87)
TOTAL
295.07k
413.72k (x1.4)

AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
i7-8700k
i7-1280P
Test#1 (Integers)
16.87k
22.76k (x1.35)
Test#2 (FP)
26.12k
25.2k (x0.96)
Test#3 (Generic, ZIP)
6.33k
12.64k (x2)
Test#1 (Memory)
13.71k
13.33k (x0.97)
TOTAL
63.03k
73.92k (x1.17)

Multithread

i7-8700k

i7-1280P
Test#1 (Integers)
105.74k
149.83k (x1.42)
Test#2 (FP)
180.52k
170.43k (x0.94)
Test#3 (Generic, ZIP)
44.99k
83.32k (x1.85)
Test#1 (Memory)
8.51k
15.67k (x1.84)
TOTAL
339.77k
419.25k (x1.23)

AVX2 optimized benchmark
The benchmark in mode III (AVX2), like AVX1, is optimized to used 256 bits registers beside the second version of the Advanced Vector Extensions (AVX). The first AVX2 compatible CPU was released in 2013.
Monothread
i7-8700k
i7-1280P
Test#1 (Integers)
31.2k
39.78k (x1.27)
Test#2 (FP)
27.82k
26.06k (x0.94)
Test#3 (Generic, ZIP)
6.57k
12.44k (x1.89)
Test#1 (Memory)
15k
13.17k (x0.88)
TOTAL
80.6k
91.45k (x1.13)

Multithread

i7-8700k

i7-1280P
Test#1 (Integers)
202.42k
209.96k (x1.04)
Test#2 (FP)
186.33k
170.21k (x0.91)
Test#3 (Generic, ZIP)
44.96k
72.04k (x1.6)
Test#1 (Memory)
10.05k
16.09k (x1.6)
TOTAL
443.77k
468.3k (x1.06)

Performance/W
i7-8700k
i7-1280P
Test#1 (Integers)
2131 points/W
7499 points/W
Test#2 (FP)
1961 points/W
6079 points/W
Test#3 (Generic, ZIP)
473 points/W
2573 points/W
Test#1 (Memory)
106 points/W
575 points/W
TOTAL
4671 points/W
16725 points/W

Performance/GHz
i7-8700k
i7-1280P
Test#1 (Integers)
6639 points/GHz
8287 points/GHz
Test#2 (FP)
5919 points/GHz
5429 points/GHz
Test#3 (Generic, ZIP)
1397 points/GHz
2592 points/GHz
Test#1 (Memory)
3192 points/GHz
2744 points/GHz
TOTAL
17148 points/GHz
19051 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