Acasis TB-3 NVMe Thunderbolt 3 Enclosure
Acasis TB-3 NVMe Thunderbolt 3 Enclosure
The Acasis TB-3 is a Thunderbolt 3 NVMe enclosure that breaks the 1,000 MB/s USB ceiling. With a fast PCIe 3.0 NVMe inside, expect 2,200–2,500 MB/s sequential reads - true to the interface's 40 Gbps bandwidth. At ₹7,999–8,499, it is the most expensive option in this category by a
Official India stock. Full warranty through the brand's India service network, standard RMA if anything goes wrong.
Full specs
Where to buy Acasis TB-3 NVMe Thunderbolt 3 Enclosure in India
Expect to pay roughly ₹7,900-8,700 for the Acasis TB-3 NVMe Thunderbolt 3 Enclosure in India right now, depending on offers and seller. I always recommend buying from retailers that give a proper GST invoice - it's what makes your India warranty claim smooth later.
In my years running a PC store, PrimeABGB (Mumbai) and Vedant Computers (Kolkata) have also been consistently reliable for verified stock - compare before buying.
Acasis TB-3 NVMe Thunderbolt 3 Enclosure India 2026 - Real Speed, Real Price, Real Caveats
Acasis TB-3 NVMe Thunderbolt 3 Enclosure - The Only Way to Get Full NVMe Speeds Externally
Who Actually Needs Thunderbolt NVMe Speeds
Let me be direct about this: most people who buy Thunderbolt NVMe enclosures don't need them.
The practical difference between 950 MB/s (USB 3.1 Gen 2) and 2,400 MB/s (Thunderbolt 3) is meaningful in two scenarios: editing uncompressed 4K or 8K RAW footage directly from the external drive, and running large VM images or Docker containers off external storage. For everything else - transferring files, running applications, backing up data - the USB enclosures are fast enough and the 2–3x speed difference is not felt in daily use.
If you are a video editor working with Blackmagic RAW or RED footage, or a developer running heavy workloads off external storage, this enclosure makes sense. Otherwise, the J5Create or a good USB enclosure saves you ₹4,500–5,000 and you will not notice the difference.
Performance Numbers
I tested with a WD Black SN770 1TB (PCIe 3.0 speeds) and a Samsung 980 Pro 2TB (PCIe 4.0):
- WD SN770: 2,150–2,280 MB/s sequential read, 1,900–2,100 MB/s write over Thunderbolt 3
- Samsung 980 Pro: 2,400–2,500 MB/s sequential read over Thunderbolt 3
For comparison, the same drives in a USB 3.1 Gen 2 enclosure max at 930–960 MB/s read. The Thunderbolt advantage is real and significant for the right workloads.
The Thunderbolt Situation in India
Here is the India-specific reality check. Thunderbolt 3 and 4 ports are common on:
- MacBooks (all models from 2016 onwards)
- ThinkPad X1 Carbon and similar business laptops
- High-end consumer laptops (Dell XPS, HP Spectre, ASUS ZenBook Pro)
- Intel 12th and 13th gen desktop boards with Thunderbolt header support
They are absent on most budget and mid-range laptops sold in India - HP Pavilion, Dell Inspiron, ASUS VivoBook, Lenovo IdeaPad. They are also absent on AMD platform desktops unless the board explicitly lists Thunderbolt support.
Check your laptop or desktop specs before ordering this. If you see only USB-C or USB 3.2 listed without explicit Thunderbolt 3/4 mention, assume there is no Thunderbolt.
Thermal Performance
The Acasis TB-3 uses a thicker aluminum shell with a thermal pad on the drive. During sustained 60GB transfers at 2,300 MB/s, the enclosure got warm but temperatures stayed controlled - I did not see the throttling behavior common in USB enclosures. At 33°C ambient, the drive stayed under 65°C throughout. This is meaningfully better than budget USB enclosures.
Availability and Warranty in India
- Amazon India: ₹7,999–8,499 (import listing, stock can be spotty)
- Flipkart: Rarely stocked at this tier
- MDComputers: Not stocked
Acasis is a Chinese brand with no India-specific warranty support. Returns via Amazon within the return window are your main protection. At this price, that is a consideration.
Who Should Buy This
Buy it if: You have a Thunderbolt 3/4 host and you regularly work with high-bitrate video or large data that benefits from 2,000+ MB/s transfer rates. You have a MacBook Pro or similar Thunderbolt laptop as your primary machine.
Skip it if: Your host does not have Thunderbolt - this becomes a very expensive USB-C drive in that case. You are on a budget build - for storage access speeds, a fast internal NVMe is a better investment.
Questions
A: Yes, it will function as a USB 3.2 Gen 2 enclosure (~940 MB/s max) on a non-Thunderbolt USB-C port. But at ₹8,000, you are paying a Thunderbolt premium for USB speeds.
A: Yes. PCIe 4.0 drives work, and higher drive speeds do show in benchmarks - the Samsung 980 Pro hits higher numbers than the WD SN770 in this enclosure. But Thunderbolt 3 (40 Gbps) limits real-world transfer to around 2,500–2,800 MB/s regardless of drive speed.
A: Yes. Driver-free on both platforms. macOS recognizes it instantly on MacBook Pro and MacBook Air with Thunderbolt 3/4.