Collection: 1TB SSD

Which 1TB SSD do you actually need?

Most PC builders end up on a 1TB SSD because it's the point where price per gigabyte stops hurting. A Windows install, a decent game library and your working files all fit without constant uninstalling. The real question is which type of 1TB drive you buy, because the label hides big differences.

Entry-level drives are usually DRAM-less PCIe 3.0 or budget PCIe 4.0 models using QLC flash, such as the Crucial P3 or Kingston NV3 families. QLC stores four bits per cell, which makes it cheap but slower to write and lower in endurance. Once the fast SLC cache fills during a big install or file transfer, speeds can fall to a few hundred MB/s. For a boot drive or light use, that's fine.

The sweet spot is a TLC PCIe 4.0 drive with a proper controller, like the Samsung 990 Evo Plus, WD_BLACK SN850X, Crucial T500 or Lexar NM790. TLC holds sustained write speeds much better, typically carries around 600TBW of endurance at 1TB, and delivers the low random-access latency that makes a system feel quick.

Enthusiast drives are PCIe 5.0 models like the Crucial T705 or Samsung 9100 Pro, with sequential reads well above 10,000 MB/s. Diminishing returns hit hard here. Game load times depend mostly on CPU decompression and asset streaming, not raw bandwidth, so a Gen5 drive often loads a game only fractionally faster than a good Gen4 one. Gen5 pays off in heavy video editing, large dataset work and big file transfers.

Upgrading and technical nuances

Two things separate good drives from average ones: the flash type and how the drive handles its mapping table. A DRAM cache holds the lookup table on the drive, which helps consistent performance under mixed loads. Many cheaper drives use Host Memory Buffer (HMB), borrowing a small slice of system RAM instead. HMB works acceptably for gaming and general use, but it's weaker under sustained mixed workloads. If you're buying a 1TB SSD as your main drive, a DRAM-equipped TLC model like the 990 Pro, SN850X or T500 is the safer pick.

Platform matters too. Current AM5 and LGA1851 Motherboards typically have one CPU-attached Gen5 M.2 slot plus several Gen4 slots, some running through the chipset. Check the manual before populating every slot. Some boards disable SATA ports when certain M.2 slots are used, and some split the CPU's PCIe lanes so the GPU drops to x8 if a Gen5 slot is filled. Your CPUs & Processors choice also determines how many direct lanes are available.

PCIe is backwards and forwards compatible, so a Gen5 drive works in a Gen4 slot at Gen4 speeds. You just pay a premium for bandwidth you can't use. SATA SSDs still make sense in older systems or as a cheap secondary drive, but they cap at roughly 550 MB/s and have no place as a primary drive in a new build. Browse the full Solid State Drives (SSD) range to compare these tiers side by side.

Practical things to check before you buy

Most desktop NVMe drives are M.2 2280, meaning 22mm wide and 80mm long, but confirm your board's slot supports that length. Double-sided drives place flash chips on both faces, which matters if your board heatsink pad only contacts one side or clearance is tight.

Heat is the biggest gotcha. Gen4 drives are fine with a motherboard heatsink. Gen5 drives can pull 10W or more under load and will throttle without proper cooling. Slots under a big GPU get warm from the card's exhaust, so check Graphics Cards / GPU dimensions against slot position. If you run an AIO, remember you've lost the airflow a tower cooler's fan used to push over the socket area, so look at your CPU Cooling setup and consider a small fan from Fans, Heatsinks & Cooling aimed at the M.2 area. Case airflow is worth checking in Computer Cases, especially in compact builds.

NVMe drives draw power through the slot, so no cabling is needed. SATA drives need a SATA power lead from your Power Supplies plus a data cable from Cables & Connectors. Also avoid doubling up heatsinks. If the drive ships with its own, it often won't fit under the motherboard's cover, so use one or the other. If you're buying for a console, check the heatsink height limits first.

Brands and local warranty

The reliable names today are Samsung, WD_BLACK and SanDisk, Crucial, Kingston, Seagate, Lexar, Corsair and Solidigm. Samsung, WD and Crucial make their own flash and controllers or work closely with the supplier, which usually means more consistent quality between production batches. Kingston and Corsair sometimes change components within a model line, so check reviews for the specific revision you're buying.

Local Australian warranty matters more than most people expect. Five years is common for a 1TB drive, and an Australian-supported product means you deal with a local RMA process instead of paying for international shipping and waiting weeks. Grey imports and marketplace stock from unknown sellers may not be covered at all. Australian Consumer Law gives you extra protection on top of the manufacturer's terms, but it's far easier to enforce with an authorised local retailer. Keep your invoice, and note the TBW rating, because many warranties end at either the time limit or the endurance figure, whichever comes first.

Frequently asked questions

Is 1TB enough for a gaming PC?

For most people, yes, though it fills faster than you'd think. Modern AAA titles regularly exceed 100GB each, so you'll fit perhaps eight to ten big games after Windows and apps. If you keep a large library installed, plan on a second drive.

Do I need a heatsink on my NVMe SSD?

For Gen4 drives, the motherboard's heatsink is enough. For Gen5, it's essential, and a bare drive will throttle quickly. If your board lacks a heatsink, buy a drive with one or a separate low-profile cooler.

Is a PCIe 5.0 1TB SSD worth it?

Only if you regularly move huge files or work with high-bitrate video. For gaming and general use, a quality Gen4 TLC drive feels almost identical and runs cooler.

What's the difference between QLC and TLC?

TLC stores three bits per cell and QLC stores four. QLC is cheaper but has slower sustained writes and lower endurance. For a boot drive, TLC is worth the small price difference.

Will an NVMe SSD work in any motherboard?

It needs an M.2 slot with PCIe NVMe support. Some older boards only offer M.2 SATA, which won't work with NVMe drives. Check your board's specifications, and see our Motherboards range if you're still choosing.