Apple Watch Series 8 SS (45mm) vs Apple Watch Series 4 (44mm) Full Specs

Summary

CPU S82 Cores	CPU S42 Cores
GPU S864 Shaders	GPU S464 Shaders
Memory 1.5GB	Memory 1GB
Storage 32GB	Storage 16GB
Display 1.9" LTPO OLED484x396 1000Nits 60Hz	Display 1.78" LTPO OLED448x368 1000Nits 60Hz
Other Upgrades -	Other Upgrades No Cellular
Price $749	Price $429 MAX

Highlights

Peak OPS

Peak OPS FP32 FP16

Apple Watch Series 8 SS86.4 GFLOPS FP16S8

x1.20

Apple Watch Series 471.94 GFLOPS FP16S4

x1

Show Top Score

System Arch

CPU

S8	S4
2 Cores 2 Threads 1.73GHz	2 Cores 2 Threads 1.59GHz

GPU

S8	S4
64 Shaders 675MHz	64 Shaders 562MHz
Shared Memory	Shared Memory
Peak·FP32·FP16 86.4 GFLOPSFP16	Peak·FP32·FP16 71.94 GFLOPSFP16

Memory

1.5GB

1GB

Storage

32GB

16GB

Display

1.9" LTPO OLED484x396 1000Nits 60Hz Size Res 1.9"	1.78" LTPO OLED448x368 1000Nits 60Hz Size Res 1.8"
Panel & HDR LTPO OLED	Panel & HDR LTPO OLED
Brightness 1000 nits Peak	Brightness 1000 nits Peak
Refresh & VRR 60Hz Variable Refresh	Refresh & VRR 60Hz Variable Refresh
Resolution 484x396 191.7K Pixels 329 ppi	Resolution 448x368 164.9K Pixels 326 ppi
Backlight & Contrast 191.7K zones 1M:1 contrast	Backlight & Contrast 164.9K zones 1M:1 contrast
Viewing Angles 178° H 178° V	Viewing Angles 178° H 178° V
Color Depth 8-bit	Color Depth 8-bit
Coating & Lamination Fully Laminated	Coating & Lamination Fully Laminated
Touchscreen Yes	Touchscreen Yes

Battery

Up to 18 hours	Up to 18 hours
Charge Time 0-80%: 45 min	Charge Time -
1.19Wh 308mAh 3.85V Lithium-Ion	1.13Wh 292mAh 3.87V Lithium-Ion

Connectivity

Wi-Fi 4E Bluetooth 5.3

Wi-Fi 4 Bluetooth 5.0

Cellular

Cellular

No Cellular

Sensors

Motion Accelerometer Gyroscope	Motion Accelerometer Gyroscope
Health Optical Heart (PPG) Electrical Heart (ECG) Blood Oxygen (SpO2) Skin Temperature	Health Optical Heart (PPG) Electrical Heart (ECG) - -
Utility Proximity Ambient Light (ALS)	Utility Proximity Ambient Light (ALS)
Communication NFC Ultra-Wideband Chip	Communication NFC -
Location GPS GLONASS Galileo QZSS Beidou Compass	Location GPS GLONASS Galileo QZSS Beidou -

Power

-	Charger 5W USB-A
Output -	Output 5W 5.00V 1.00A
Input -	Input 0.15A
Protocol & Port -	Protocol & Port USB-A
USB-PD -	USB-PD 1.00A 5V (5W)

Audio

Speakers 1	Speakers 1
Microphones 1	Microphones 1

OS

Launch OS iOS 9

Launch OS iOS 5

Enclosure

Build Material Stainless Steel, Sapphire	Build Material Aluminum, Glass
Height 45mm (1.77") Width 38mm (1.5") Depth 10.7mm (0.42")	Height 44mm (1.73") Width 38mm (1.5") Depth 10.7mm (0.42")
Weight 52g	Weight 37g
Volume 0.018L	Volume 0.018L

Info

Release Date 2022-09-16	Release Date 2018-09-21
Warranty 1 year	Warranty 1 year
Description 45mm	Description 44mm

Images