Apple Watch Series 9 SS (45mm) vs Apple Watch Series 7 SS (41mm)

Apple Watch Series 9 SS (45mm) $749
Apple Watch Series 7 SS (41mm) $699
Base Price (MSRP)
$749
Base Price (MSRP)
$699
CPU
S9
CPU
S7
GPU
S9
GPU
S7
Memory
1GB
Memory
1GB
Storage
64GB
Storage
32GB
Display
1.9" LTPO OLED 484×396 Touch
Display
1.7" LTPO OLED 430×352 Touch

FP32

  • 30% faster vs Apple Watch Series 7 SS (41mm)
  • 23% slower vs Apple Watch Series 9 SS (45mm)
Apple Watch Series 9 SS (45mm) - 225 GFLOPS FP32
x1.3
Apple Watch Series 7 SS (41mm) - 173 GFLOPS FP32
x1
CPU Image
S9
2 Cores
2 Threads
1.2GHz Clock
CPU Image
S7
2 Cores
2 Threads
1.8GHz Clock
S9 vs S7 Full Specs Comparison
GPU Image
S9
256 Shaders
440MHz
Shared Memory
GPU Image
S7
128 Shaders
675MHz
Shared Memory
225 GFLOPS FP32
0%
173 GFLOPS FP32
0%
S9 vs S7 Full Specs Comparison
1GB
1GB
64GB
32GB
58 min 4K Video
1%
Unknown # min 4K Video
0%
1.9"
LTPO OLED
Always On
1.7"
LTPO OLED
Always On
1.9"
1.7"
Area
1.8 in² (11.4 cm²)
null Aspect Ratio
Area
1.4 in² (9 cm²)
null Aspect Ratio
Brightness
1,000 Nits
2,000 Nits Peak
Brightness
-
1,000 Nits Peak
Refresh Rate
60Hz
Variable
Refresh Rate
60Hz
Variable
Resolution
484×396
0.2 Million Pixels
329 PPI
Resolution
430×352
0.2 Million Pixels
329 PPI
484×396
430×352
1,000,000:1 Contrast
1,000,000:1 Contrast
Viewing Angles
178° Horizontal
178° Vertical
Viewing Angles
178° Horizontal
178° Vertical
Colour Depth
8-bit
Colour Depth
8-bit
-
Fully Laminated
-
Fully Laminated
Touch
Capacitive
Touch
Capacitive
484×396
430×352
No Biometrics
No Biometrics
1
1
1
1
Cellular
Cellular
Wi-Fi 4E (802.11n)
1 Stream
Up to 150Mbps
Wi-Fi 4E (802.11n)
1 Stream
Up to 150Mbps
Bluetooth 5.3
Bluetooth 5.0
Motion
Accelerometer
Gyroscope
Altimeter
Motion
Accelerometer
Gyroscope
Altimeter
Health
Optical Heart (PPG)
Electrical Heart (ECG)
Blood Oxygen (SpO2)
Skin Temperature
Health
Optical Heart (PPG)
Electrical Heart (ECG)
Blood Oxygen (SpO2)
-
Utility
Proximity
Ambient Light (ALS)
Crash Detection
Utility
Proximity
Ambient Light (ALS)
-
Communication
NFC
Ultra-Wideband Chip
Communication
NFC
Ultra-Wideband Chip
Location
GPS
GLONASS
Galileo
QZSS
Beidou
Compass
Location
GPS
GLONASS
Galileo
QZSS
Beidou
Compass
Integrated Chipset
Integrated Chipset
External
External
1.2Wh
308mAh
3.85V
Lithium-Ion
1.1Wh
284mAh
3.84V
Lithium-Ion
Up to 18 Hours
Up to 18 Hours
Charge Time
45 min 80%
Charge Time
45 min 80%
watchOS
watchOS
Build Material
Stainless Steel, Sapphire
IP6X
Up to 50m Water Resistant
Build Material
Stainless Steel, Sapphire
IP6X
Up to 50m Water Resistant
Proprietary Wireless Charging
Proprietary Wireless Charging
Height
45 mm (1.8 in)
Width
38 mm (1.5 in)
Depth
10.7 mm (0.4 in)
Volume
0.018 L
Height
41 mm (1.6 in)
Width
35 mm (1.4 in)
Depth
10.7 mm (0.4 in)
Volume
0.015 L
Weight
52 g (1.83 oz)
Weight
42 g (1.48 oz)
CPU
Not Upgradable
CPU
Not Upgradable
GPU
Not Upgradable
GPU
Not Upgradable
Memory
Not Upgradable
Memory
Not Upgradable
Storage
Not Upgradable
Storage
Not Upgradable
Wi-Fi
Not Upgradable
Wi-Fi
Not Upgradable
Motherboard
Not Upgradable
Motherboard
Not Upgradable
Power Supply
Not Upgradable
Power Supply
Not Upgradable
Change Comparison