Acer Predator GM7 4TB vs Samsung 990 Pro 4TB
The site holds no current price for at least one of these, so what follows compares specifications alone.
| Specification | AcerPredator GM7 4TB | Samsung990 Pro 4TB |
|---|---|---|
| Capacity (GB) | 4000 | 4000 |
| Sequential read (MB/s) | 7400 | 7450better |
| Sequential write (MB/s) | 6500 | 6900better |
| Current best price | — | — |
| Price per TB | — | — |
| Endurance (TBW) | 2400 | 2400 |
| Warranty (years) | 5 | 5 |
| DRAM cache | No | Yes |
| NAND type | tlc | tlc |
| Controller | Maxio MAP1602 | Samsung Pascal |
How these two compare
Sequential throughput
Acer Predator GM7 4TB is rated 7400 MB/s read and 6500 MB/s write; Samsung 990 Pro 4TB, 7450 MB/s read and 6900 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.
Endurance
The makers warrant 2400 TBW on Acer Predator GM7 4TB and 2400 TBW on Samsung 990 Pro 4TB — how much writing each is rated to take before the endurance clause lapses. Most desktop workloads never come close, so read the two against each other rather than as a limit you are likely to reach.
DRAM cache
Acer Predator GM7 4TB is DRAM-less; Samsung 990 Pro 4TB carries a DRAM cache. 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: Acer Predator GM7 4TB uses TLC and Samsung 990 Pro 4TB 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: Acer Predator GM7 4TB uses the Maxio MAP1602, and Samsung 990 Pro 4TB uses the Samsung Pascal. 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: Acer Predator GM7 4TB carries a 5-year warranty, Samsung 990 Pro 4TB carries a 5-year warranty. 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, Acer Predator GM7 4TB or Samsung 990 Pro 4TB?
- Acer Predator GM7 4TB is rated 7400 MB/s read and 6500 MB/s write; Samsung 990 Pro 4TB, 7450 MB/s read and 6900 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 Acer Predator GM7 4TB or Samsung 990 Pro 4TB?
- 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.