Silicon Power UD90 1TB vs TeamGroup MP44L 1TB
The site holds no current price for at least one of these, so what follows compares specifications alone.
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.
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
With a price missing for at least one side, there is no cost verdict to give. What separates two otherwise-similar drives is up in the sections above — sustained and random behaviour, whether there is a DRAM cache, the flash tier and the warranty — so weigh those against what your build needs.
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.
- Should you buy Silicon Power UD90 1TB or TeamGroup MP44L 1TB?
- With a price missing for at least one side, there is no cost verdict to give. What separates two otherwise-similar drives is up in the sections above — sustained and random behaviour, whether there is a DRAM cache, the flash tier and the warranty — so weigh those against what your build needs.