Apple Watch Series 3 vs. Series 8: A Generational Leap?

The Apple Watch has consistently set the standard for smartwatches. But how does the aging Series 3 Aluminum stack up against the feature-rich Series 8? We're diving deep into a head-to-head comparison to help you decide which wearable is right for you.
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🏆 Quick Verdict

The Apple Watch Series 8 is the clear winner, offering significant improvements in performance, health tracking, and display technology. While the Series 3 remains functional, its outdated hardware makes it a less compelling choice for most users seeking a modern smartwatch experience. The Series 8's faster charging is a bonus.

PHONES
Phone Names Apple Watch Series 3 Aluminum Apple Watch Series 8
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 2100 / 800 - Europe, Australia (A1891)HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - International, China, HK
4G bands1, 3, 5, 7, 8, 18, 19, 20, 26 - Europe, Australia (A1891)1, 2, 3, 4, 5, 6, 7, 8, 18, 19, 20, 25, 26, 28, 39, 40, 41, 66 - International, China, HK
SpeedHSPA, LTEHSPA, LTE
TechnologyGSM / HSPA / LTEGSM / HSPA / LTE
 1, 3, 39, 40, 41 - China (A1892)1, 2, 3, 4, 5, 6, 7, 12, 13, 14, 17, 18, 19, 25, 26, 39, 40, 41, 66 - USA, LATAM, Canada
Launch
Announced2017, September. Released 2017, September2022, September 07
StatusDiscontinuedAvailable. Released 2022, September 16
Body
BuildGlass front, ceramic back, aluminum frameSapphire crystal front, ceramic/sapphire crystal back, stainless steel frame
Dimensions42.5 x 36.4 x 11.4 mm (1.67 x 1.43 x 0.45 in)45 x 38 x 10.7 mm (1.77 x 1.50 x 0.42 in)
SIMeSIMeSIM
Weight34.9 g (1.23 oz)42.3 g (41mm), 51.5 g (45mm) (1.48 oz)
 50m water resistantIP6X certified 50m water resistant ECG certified (region dependent SW application; HW available on all models)
Display
ProtectionIon-X strengthened glassSapphire crystal glass
Resolution390 x 312 pixels (~303 ppi density)484 x 396 pixels (~326 ppi density)
Size1.65 inches1.9 inches
TypeRetina OLED, 1000 nits (peak)Retina LTPO OLED, 1000 nits (peak)
 3D Touch displayAlways-on display
Platform
CPUDual-coreDual-core
ChipsetApple S3Apple S8
GPUPowerVRPowerVR
OSwatchOS 4.0, upgradable to watchOS 8.7watchOS 9.0, upgradable to watchOS 26.1
Memory
Card slotNoNo
Internal8GB 768MB RAM, 16GB 768MB RAM32GB 1GB RAM
 -eMMC 5.1
Sound
3.5mm jack NoNo
35mm jackNoNo
Loudspeaker YesYes
Comms
Bluetooth4.2, A2DP, LE5.3, A2DP, LE
NFCYesYes
PositioningGPS, GLONASSGPS, GLONASS, GALILEO, QZSS, BDS
RadioNoNo
USBNoNo
WLANWi-Fi 802.11 b/g/nWi-Fi 802.11 b/g/n, dual-band
Features
SensorsAccelerometer, gyro, heart rate, barometerAccelerometer, gyro, heart rate, barometer, always-on altimeter, compass, SpO2, VO2max, temperature (body)
 Natural language commands and dictation (talking mode)Temperature sensing (0.01˚ accuracy) Natural language commands and dictation (talking mode) Ultra Wideband (UWB) support
Battery
ChargingWirelessWireless, 0-80% in 45 min
TypeLi-Ion 341 mAh (1.34 Wh), non-removableLi-Ion 308 mAh
Misc
ColorsSilver, Gold, Space GrayGraphite, Silver, Gold
ModelsA1860, A1861, A1889, A1891, A1890, A1892, A1858, A1859A2773, A2775, A2772, A2774, A2857, A2858, watch6,16, watch6,17
PriceAbout 480 EURAbout 330 EUR
SAR0.52 W/kg (head)     0.34 W/kg (body)0.31 W/kg (head)     0.55 W/kg (body)
SAR EU-0.31 W/kg (head)     0.55 W/kg (body)
Camera
 NoNo

Apple Watch Series 3 Aluminum

  • Affordable
  • Functional notifications
  • Wireless charging

  • Outdated processor
  • Dim display
  • Limited features
  • Shorter software support lifespan

Apple Watch Series 8

  • Faster performance
  • Brighter Always-On display
  • Advanced health sensors (ECG, Blood Oxygen)
  • Faster charging
  • Crash Detection
  • Fall Detection
  • Longer software support lifespan

  • Higher price
  • Battery life still requires daily charging

Display Comparison

The Series 8 boasts a significantly brighter and more vibrant display with Always-On functionality, a feature absent on the Series 3. The Series 8's larger screen size also provides more space for information and interactions. The Series 3's display is functional but noticeably less impressive.

Camera Comparison

Neither watch has a dedicated camera. This section is omitted as it's not a differentiating factor.

Performance

The S8 chip in the Series 8 delivers a substantial performance boost over the S3. Apps launch faster, animations are smoother, and overall responsiveness is significantly improved. The Series 3 can feel sluggish at times, especially when multitasking.

Battery Life

While both offer all-day battery life, the Series 8 charges considerably faster (0-80% in 45 minutes) and generally provides slightly better battery optimization. The Series 3's battery life is adequate but not exceptional.

Buying Guide

The Apple Watch Series 3 Aluminum is a budget-friendly option for users primarily needing basic timekeeping and notifications. It's suitable for those upgrading from an even older Apple Watch or seeking a simple smartwatch. The Series 8 is ideal for fitness enthusiasts, health-conscious individuals, and anyone wanting the latest Apple Watch features like advanced health sensors and a brighter display.

Frequently Asked Questions

❓ Is the Apple Watch Series 3 still worth buying?
Only if you're on a very tight budget and primarily need basic timekeeping and notifications. Be aware of its limitations and shorter software support lifespan.
❓ What are the key health features of the Apple Watch Series 8?
The Series 8 includes ECG (electrocardiogram) for heart rhythm monitoring, Blood Oxygen sensor, temperature sensing for cycle tracking, Fall Detection, and Crash Detection.