Memory Card Storage Guide
Capacities, Speeds, y Choosing el/la Right Card
Find Your CardMemory cards pack gigabytes of storage into fingernail-sized packages. Desde SD cards in cameras un/una microSD in phones y gaming devices, understanding capacities y speed classes helps tu choose el/la right card for tu needs—without overpaying o experiencing frustrating slowdowns.
Memory Card Types
SD Cards (Full Size)
- Dimensions: 32mm × 24mm × 2.1mm
- Used in: DSLR cameras, camcorders, laptops
- Capacity: Up un/una 1 TB commonly available
MicroSD Cards
- Dimensions: 15mm × 11mm × 1mm
- Used in: Smartphones, action cameras, drones, Nintendo Switch
- Capacity: Up un/una 1 TB available
- Adapters: Can usar in completo-size SD slots
CompactFlash (CF)
- Larger, profesional format
- Used in: High-end DSLRs, profesional video
- Being replaced by CFexpress
CFexpress
- Latest profesional estandar
- Extremely rapido (up un/una 4 GB/s)
- Used in: 8K video, high-speed burst photography
How Much Can You Store?
| Card Size | Photos (12 MP) | 4K Video | 1080p Video | Songs (MP3) |
|---|---|---|---|---|
| 16 GB | ~4,000 | ~30 min | ~2 horas | ~3,500 |
| 32 GB | ~8,000 | ~1 hora | ~4 horas | ~7,000 |
| 64 GB | ~16,000 | ~2 horas | ~8 horas | ~14,000 |
| 128 GB | ~32,000 | ~4 horas | ~16 horas | ~28,000 |
| 256 GB | ~64,000 | ~8 horas | ~32 horas | ~56,000 |
| 512 GB | ~128,000 | ~16 horas | ~64 horas | ~112,000 |
| 1 TB | ~256,000 | ~32 horas | ~128 horas | ~224,000 |
*Estimates vary based on compression settings y content complexity
Understanding Velocidad Classes
Velocidad Class (Minimum Write Velocidad)
| Class | Symbol | Min. Velocidad | Best For |
|---|---|---|---|
| Class 2 | C2 | 2 MB/s | Standard video |
| Class 4 | C4 | 4 MB/s | 720p video |
| Class 6 | C6 | 6 MB/s | 720p video |
| Class 10 | C10 | 10 MB/s | Full HD video |
UHS Velocidad Class
| Class | Symbol | Min. Velocidad | Best For |
|---|---|---|---|
| UHS Class 1 | U1 | 10 MB/s | Full HD video, bursts |
| UHS Class 3 | U3 | 30 MB/s | 4K video recording |
Video Velocidad Class
| Class | Min. Velocidad | Best For |
|---|---|---|
| V6 | 6 MB/s | 720p video |
| V10 | 10 MB/s | 1080p video |
| V30 | 30 MB/s | 4K video |
| V60 | 60 MB/s | 8K video, high bitrate 4K |
| V90 | 90 MB/s | 8K video, profesional |
Application Performance Class
For running apps desde el/la card (Android):
| Class | Random Read | Random Write | Best For |
|---|---|---|---|
| Un/Una1 | 1,500 IOPS | 500 IOPS | Running basico apps |
| Un/Una2 | 4,000 IOPS | 2,000 IOPS | Running demanding apps |
Un/Una2 cards trabajar better for app storage y game loading on Android devices y Nintendo Switch.
Recommended Cards by Use
Smartphones (Expandable Storage)
- Capacity: 128-512 GB
- Velocidad: Un/Una2 rated, U1 minimum
- Format: microSD
Digital Cameras (Photography)
- Capacity: 64-256 GB
- Velocidad: U3/V30 for burst shooting
- Format: SD o CFexpress for profesional
Action Cameras (GoPro, etc.)
- Capacity: 64-256 GB
- Velocidad: V30 minimum for 4K, V60 for high bitrate
- Format: microSD
Nintendo Switch
- Capacity: 128-512 GB
- Velocidad: U3/Un/Una2 for faster game loading
- Format: microSD
Drones
- Capacity: 64-128 GB
- Velocidad: V30 minimum for 4K footage
- Format: microSD
Buying Consejos
- Buy desde reputable sources—counterfeit cards son comun
- Check device compatibility—older devices may not soportar SDXC
- Match speed un/una usar case—don't overpay for V90 si shooting 1080p
- Consider warranty—major brands offer 5-10 ano warranties
- Test nuevo cards—usar utilities like H2testw un/una verify capacity
Conclusion
Memory card selection depends on capacity needs y speed requirements. For general usar, un/una 128 GB U3/V30 card cubre la mayoria scenarios. Professional video trabajar demands V60 o V90 speeds. App storage benefits desde Un/Una2 ratings. Always buy desde trusted sources un/una avoid counterfeit cards with fake capacities.