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Apple S7 vs Apple S9 SiP vs Apple S8

Apple S7

► remove from comparison Apple S7

The Apple S7 is a 64-Bit dual core processor for the Apple Watch Series 7. It integrates a GPU, 32 GB flash memory, Bluetooth 5.0, 1 GB RAM, 802.11 b/g/n 2.4 and 5 GHz WiFi and satellite positioning (GPS, GLONASS, Galileo, QZSS). According to Apple the SiP has two CPU cores based on the Apple A13 and offers 20% more performance than the old Apple S5 in the Watch Series 5. It looks like the S7 is technically identical with the Apple S6 (sama model number of t8301).

Apple S9 SiP

► remove from comparison Apple S9

The Apple S9 SiP (System in a Package) is a 64-bit processor with two cores (Sawtooth Dual-Core) that is used in the Apple Watch Series 9. The two CPU cores are based on the same microarchitecture as in the Apple A15 SoC. The chip also includes a Neural Engine (with 4 cores) for AI tasks for the first time.

The S9 offers 64 GB internal memory, L1 GPS, GNSS, Galileo and BaeiDou, WLAN 4 (802.11n), Bluetooth 5.3), and LTE / UMTS (optional). The ultra-wideband chip Apple U1 is also integrated.

The chip is manufactured in the modern 4nm process at TSMC (N4P).

Apple S8

► remove from comparison Apple S8

The Apple S8 is a 64-Bit dual core processor for the Apple Watch Series 8. It integrates a GPU, 32 GB flash memory, Bluetooth 5.0, 1 GB RAM, 802.11 b/g/n 2.4 and 5 GHz WiFi and satellite positioning (GPS, GLONASS, Galileo, QZSS). According to Apple the SiP has two CPU cores based on the Apple A13 and offers 20% more performance than the old Apple S5 in the Watch Series 5. It looks like the S8 is technically identical with the Apple S6 and S7 (same model number of t8301).

ModelApple S7Apple S9 SiPApple S8
CodenameThunderThunderThunder
Clock1800 MHz1800 MHz1800 MHz
Cores / Threads2 / 22 / 22 / 2
Announced
Technology4 nm7 nm
ArchitectureARMARM

Benchmarks

Mozilla Kraken 1.1 - Kraken 1.1 Total Score *
100%
S7 +
85527 ms (100%)
185%
S9 +
min: 46038.4     avg: 46196     median: 46195.8 (54%)     max: 46353.1 ms
120%
S8 +
71340 ms (83%)
Sunspider - Sunspider 1.0 Total Score *
100%
S7 +
1785 ms (20%)
197%
S9 +
min: 902.3     avg: 905     median: 905 (10%)     max: 907.7 ms
96%
S8 +
1867 ms (20%)
Octane V2 - Octane V2 Total Score
100%
S7 +
810 Points (1%)
0 Points (0%)
103%
S8 +
838 Points (1%)

Average Benchmarks Apple S7 → 100% n=3

Average Benchmarks Apple S9 SiP → 127% n=3

Average Benchmarks Apple S8 → 106% n=3

- Range of benchmark values for this graphics card
red legend - Average benchmark values for this graphics card
* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

v1.33
log 20. 16:42:21

#0 ran 0s before starting gpusingle class +0s ... 0s

#1 checking url part for id 13849 +0s ... 0s

#2 checking url part for id 16392 +0s ... 0s

#3 checking url part for id 14620 +0s ... 0s

#4 redirected to Ajax server, took 1753022541s time from redirect:0 +0s ... 0s

#5 did not recreate cache, as it is less than 5 days old! Created at Sat, 19 Jul 2025 13:28:35 +0200 +0s ... 0s

#6 composed specs +0.005s ... 0.005s

#7 did output specs +0s ... 0.005s

#8 getting avg benchmarks for device 13849 +0.001s ... 0.005s

#9 got single benchmarks 13849 +0.004s ... 0.009s

#10 getting avg benchmarks for device 16392 +0.001s ... 0.01s

#11 got single benchmarks 16392 +0.003s ... 0.013s

#12 getting avg benchmarks for device 14620 +0.001s ... 0.014s

#13 got single benchmarks 14620 +0.003s ... 0.017s

#14 got avg benchmarks for devices +0s ... 0.017s

#15 No cached benchmark found, getting uncached values +0.003s ... 0.02s

#16 min, max, avg, median took s +0s ... 0.02s

#17 return log +0s ... 0.02s

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> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > Benchmarks / Tech > Processor Comparison - Head 2 Head
Redaktion, 2017-09- 8 (Update: 2023-07- 1)