Silicon Power 128GB Superior Micro SDXC UHS-I (U3), V30 4K A2, High Speed MicroSD Card with Adapter

I bought the Silicon Power 128GB microSDXC card expecting that might have low performance or might be even fake at this price range—but running Fake Device Test proved otherwise:Average Write Speed: 39.32 MB/sAverage Verify Speed: 85.38 MB/sNo errors during full 124.36 GB write-and-verify sequenceThat tells me this card is legit, not fake. Is it hitting the advertised 80 MB/s write? No—not in my test—but the discrepancy likely reflects file handling and real-world usage rather than a counterfeit product. On my Galaxy Tab S9, video playback is smooth, apps run flawlessly, and no glitches or slowdowns so far. I'm completely satisfied with its reliability and performance in everyday use. And lets not forget that read speed is pretty close to 100MB/s.✅ Why I like it: real-world stability, zero verification errors, works flawlessly with my galaxy Tab S9.🔄 Room for improvement: Write speed below spec—but still enough for 4K video and app storage.Overall: a genuine, affordable, and trustworthy card for media and tablet use.⭐ 4 Other Great Options at This Price RangeBut in case you want more options to choose, Here are four solid alternatives worth considering:1. Amazon Basics Micro SDXC (A2 U3, up to 100 MB/s) A budget-friendly and highly reliable card—with IPX6 water/shock/X-ray resistance and broad compatibility. And in my experience Amazon products really deliver what they say.2. SanDisk Ultra 128 GB (UHS‑I, up to 140 MB/s, A1) The most famous and well known brand in memory, This one offers fast read speeds and trusted brand reliability for Full HD tasks—great also for tablets and 4K use.3. Samsung EVO Select 128 GB (UHS‑I U3 V30, up to 160 MB/s, A2) Probably the best brand in memory, High endurance and blazing read/write speeds—ideal for demanding mobile, tablet, or Nintendo Switch users.4. PNY Elite‑X 128 GB (Class 10, U3 V30, A1) This brand is well known for it's competitive performance while maintaining the price. Fast and dependable, with consistent read/write performance—excellent for 4K media and app storage.📝 Final ThoughtsSilicon Power: Verified real, performed well in tests, smooth real-world use—especially for video and apps.Alternatives: Amazon Basics offers great durability and price-value; SanDisk and Samsung bring top-tier brand trust and higher speed; PNY delivers solid mid‑range reliability.If you’re price-sensitive but want peace of mind, Silicon Power is a legit pick. If speed or brand reputation matters more to you, one of the other four might serve better depending on your device.

I absolutely love these cards.I collect retro gaming handheld devices and they each require a new card because the ones they initially come with are very bad and corrupt almost immediately.I have these cars on my Switch, Steam Deck Oled, Trimui Brick, R36S, Nintendo DSI XL, PSP 2001, Anbernic 406H, Anbernic 405M, Anbernic RG 40v, and Trimui Smart Pro. They work wonderfully fast and have never failed, not even once. I highly recommend this brand above all others not just for its affordability but their reliability.You can’t go wrong with these!Why did you pick this product vs others?:Because of price and reliability.Transfer speed:They are fast.Storage capacity:Ample room to add as many ROMS I own for my dedicated devices.Design:It’a the same as the other cards.Card quality:Some of the highest quality micro SD cards you’ll find.

Reliable and High-Performance MicroSD Card – Perfect for 4K Recording and GamingI recently upgraded to the Silicon Power 128GB Superior Micro SDXC UHS-I (U3), V30, 4K A2 memory card, and it has significantly enhanced my device's performance. Whether you're using it for 4K video recording, gaming, or expanding storage on devices like the Nintendo Switch, this card delivers exceptional results.Key Features:High-Speed Performance: With read speeds up to 100MB/s and write speeds up to 80MB/s, it ensures smooth 4K video recording and quick file transfers.A2 App Performance: The A2 rating guarantees faster app launch and smoother multitasking.V30 Video Speed Class: Supports Video Speed Class 30 for uninterrupted 4K Ultra HD videos and burst mode shots.Durability: Built to withstand various conditions including waterproof, dustproof, temperature-proof, and X-ray-proof, making it reliable in tough environments.Versatile Compatibility: Works with smartphones, tablets, drones, action cameras, and gaming consoles like the Nintendo Switch.Since installing this card, my device has experienced faster load times, smoother gameplay, and reliable 4K video recording. It’s a cost-effective solution for those seeking high performance without breaking the bank.

I'm always skeptical about buying micro SD card online because they're almost always duds, especially off brands like this one. My main problem being that files normally start self deleting after just a couple days in most off brands. I purchased the 1 terabyte micro SD card at the end of May & it arrived rather quick. I already planned to wait awhile before leaving a review. Just over a month now & it continues working fantastic, nothing has self deleted, I'm absolutely loving the storage capacity, it handles the heat of my constant file transfers great, it's altogether amazing & definitely worth the affordable price compared to most other brand that charge nearly twice as much, if not more. Highly recommend.

It works, which some low-budget cards don't. Stuck it in a MacBook Pro, it formatted perfectly and works great for backup, as my laptop has only 128G internally. The write speed isn't incredible, but I'm not doing anything incredible. Was fairly easy to open, which is amazing these days when everything is packaged to survive a trip to Jupiter or something

It works so far... My use is for storage so I don't really care that much about transfer rates or whatever. Can't recall a SSD (Even the microSD is pretty much a solid state drive right?) having problems. Only thing is you have to keep changing them out for larger sizes, but at least they're getting cheaper!Reliability, memory capacity, storage capacity, ease of installation and quality all top notch.