SanDisk Ultra Flair 128GB
Score: 61/100
Kingston DataTraveler 100 G3 128GB
Score: 40/100Rankings
The SanDisk Ultra Flair 128 GB USB 3.0 flash drive delivers strong read performance and a rugged metal body, complemented by built-in 128-bit AES encryption. While it offers a 5-year warranty in marketing, the spec lists a 1-year warranty and sustained write speeds are modest, with heat buildup under heavy use.
The Kingston DataTraveler 100 G3 128 GB offers solid read performance and a convenient sliding cap, but its write speeds and random performance are extremely low, making it best for occasional read-heavy tasks.
| Attribute | | |
|---|---|---|
128 GBbest | 128 GBbest | |
— | 114 MB/sbest | |
15 MB/sbest | 3.14 MB/s | |
12 months | 60 monthsbest | |
| ↓ lower better | 35 g | 20 gbest |
| ↓ lower better | 6.6 mmbest | 59.9 mm |
| ↓ lower better | 42.4 mm | 21.3 mmbest |
| ↓ lower better | 13.2 mm | 10 mmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Performance(2) | ||
Read Speed (MB/s) | 156-165 MB/s | 114 MB/s |
Write Speed (MB/s) | 15 MB/s | 3.14 MB/s |
Warranty(1) | ||
Warranty Period (months) | 12 months | 60 months |
Security(1) | ||
Encryption Support | true | false |
Physical(5) | ||
Weight (g) | 35 g | 20 g |
Length (mm) | 6.6 mm | 59.9 mm |
Width (mm) | 42.4 mm | 21.3 mm |
Height (mm) | 13.2 mm | 10 mm |
Material | Metal | Plastic |
Connectivity(1) | ||
USB Interface | USB 3.0 | USB 3.2 Gen 1 |
Products in the top-left offer the best value (high score, low price).
Professional reviewers praise the Ultra Flair for its near-advertised read speeds, solid metal construction and useful security features, but they criticize its slow sustained write speeds, limited cache and the fact that its performance falls short of newer SSD-based USB drives. The consensus is that it's a solid mid-tier option for read-heavy tasks but not suited for heavy write workloads.
Everyday users love the drive's fast reads, durable metal look and cross-platform plug-and-play convenience, especially for transferring videos and expanding console storage. However, many complain about the drive heating up, occasional failures after a year, the tiny form factor leading to loss, and write speeds that don't match the advertised claims.
“Great for video projects”
“Works perfectly with MacBook and Windows”
“Durable and stylish”
Professional reviewers acknowledge the drive's solid sequential read capability but criticize its abysmal write and 4K random performance, giving it an AS SSD benchmark score of 0.
Users appreciate the large capacity and easy sliding cap, but many complain about painfully slow write speeds and inconsistent copying.
