Silicon Power UD90 1TB vs TeamGroup MP44L 1TB
On the measures that settle this, Silicon Power UD90 1TB never comes out behind, and on at least one it comes out ahead.
| Specification | Silicon PowerUD90 1TB | TeamGroupMP44L 1TB |
|---|---|---|
| Capacity (GB) | 1000 | 1000 |
| Sequential read (MB/s) | 5000 | 5000 |
| Sequential write (MB/s) | 4800better | 4500 |
| Current best price | £124.99betterat Amazon.co.uk · captured 2026-09-13 | £150.17at Amazon.co.uk · captured 2026-09-13 |
| Price per TB | £124.99better | £150.17 |
| DRAM cache | No | No |
| NAND type | tlc | tlc |
| Controller | Phison E21 | — |
How these two compare
Sequential throughput
Silicon Power UD90 1TB is rated 5000 MB/s read and 4800 MB/s write; TeamGroup MP44L 1TB, 5000 MB/s read and 4500 MB/s write. These are peak sequential rates over PCIe — the speed you would see copying one large file. For boot, app launches and everyday feel, random access matters more than this headline figure.
Price
Silicon Power UD90 1TB lists at £124.99, or £124.99 per TB; TeamGroup MP44L 1TB at £150.17, or £150.17 per TB.
DRAM cache
Silicon Power UD90 1TB is DRAM-less; TeamGroup MP44L 1TB is DRAM-less. A DRAM cache holds the drive's mapping table — the index of where each block physically sits — so the controller places and finds data without an extra flash lookup. A DRAM-less drive borrows a little system memory (HMB) or a slice of its own flash instead, and is likelier to slow once a long run of random writes outlasts its fast cache.
NAND, controller and warranty
NAND: Silicon Power UD90 1TB uses TLC and TeamGroup MP44L 1TB uses TLC. The tier is bits per cell — SLC, MLC, TLC and QLC from one to four — trading density against endurance and sustained-write speed: QLC is cheapest per gigabyte, TLC the mainstream balance, and the denser the cell the sooner sustained writes taper. On the controller: Silicon Power UD90 1TB uses the Phison E21, and TeamGroup MP44L 1TB's controller is not stated. It is the chip handling error correction, wear-levelling and where each write lands — much of how a drive holds up under load — even if the part number on its own tells you little. On the cover: Silicon Power UD90 1TB carries a 5-year warranty, TeamGroup MP44L 1TB does not state one. The length is the maker's own vote of confidence, and on an SSD it tends to track the endurance rating — a longer warranty usually meaning more rated writes.
Which to buy
Silicon Power UD90 1TB. It gives up nothing to the other on the measures the site tracks and leads on at least one, so there is no trade to weigh — the sections above show where the margin is.
Common questions about this pair
- Which is faster, Silicon Power UD90 1TB or TeamGroup MP44L 1TB?
- Silicon Power UD90 1TB is rated 5000 MB/s read and 4800 MB/s write; TeamGroup MP44L 1TB, 5000 MB/s read and 4500 MB/s write. These are peak sequential rates over PCIe — the speed you would see copying one large file. For boot, app launches and everyday feel, random access matters more than this headline figure.
- Which costs less per terabyte, Silicon Power UD90 1TB or TeamGroup MP44L 1TB?
- Silicon Power UD90 1TB lists at £124.99, or £124.99 per TB; TeamGroup MP44L 1TB at £150.17, or £150.17 per TB.
- Should you buy Silicon Power UD90 1TB or TeamGroup MP44L 1TB?
- Silicon Power UD90 1TB. It gives up nothing to the other on the measures the site tracks and leads on at least one, so there is no trade to weigh — the sections above show where the margin is.