Internal SSD Buying Guide

Before you look at speeds or brands, confirm the drive physically fits and connects. Form factor is the one spec that can make an otherwise perfect SSD useless, and it's determined entirely by your device, not your preferences.

• M.2 2280 - The standard for modern laptops, desktops, and the PS5. The number means 22mm wide by 80mm long. If your machine has an M.2 slot, this is almost certainly what it takes, and it's where the widest product selection and best pricing live.
• M.2 2230 - The short 30mm stick used in the Steam Deck, ROG Ally, and some ultra-compact laptops and tablets. Fewer options exist, they cost more per gigabyte, and you cannot substitute a 2280 drive no matter how much you want to.
• M.2 2242 - A 42mm middle ground found in some business laptops, mini PCs, and NAS units. Check your manual, as many boards support multiple lengths with movable standoffs.
• M.2 2260 - A 60mm length that shows up occasionally in specific laptop models and handhelds. Uncommon enough that you should verify availability before committing to it.
• 2.5 Inch - The classic SATA drive shape, roughly the size of a deck of cards, that fits any laptop drive bay or desktop mount. Slower than M.2 NVMe, but the cheapest way to add bulk storage and the only option for older machines.
• mSATA - A legacy mini card format from the early 2010s. Only relevant if you're reviving an older laptop or thin client that specifically calls for it.
• U.2 - An enterprise 2.5-inch form factor that carries NVMe over a different connector. Built for servers and workstations with the matching backplane.
• PCIe Add-In Card - A drive that slots into a full PCIe expansion slot like a graphics card. Useful for desktops out of M.2 slots or for high-capacity enterprise drives with serious cooling.

Look up your exact model number and confirm both the length and the slot type before you add anything to your cart. A ten-second check in your manual saves a return.

The interface is the pipeline between the drive and your system, and it sets the ceiling on performance. An M.2 slot can be either SATA or NVMe wired, and a fast drive in a slow slot simply runs at the slow slot's pace.

• NVMe PCIe 5.0 - The current cutting edge, with sequential reads pushing past 14,000 MB/s. It needs a recent motherboard and CPU platform to hit those numbers, runs hot enough to require substantial cooling, and commands a real price premium. Genuinely useful for large-file professional work, largely wasted on gaming.
• NVMe PCIe 4.0 - The sweet spot for most buyers in 2024 and beyond. Fast enough for the PS5's requirements, plentiful, and increasingly affordable. Backward compatible with PCIe 3.0 slots, where it will run at the lower speed.
• NVMe PCIe 3.0 - Still roughly five times quicker than SATA and often the best value per gigabyte. Perfect for older laptops and desktops whose slots can't exceed it anyway, and honestly indistinguishable from PCIe 4.0 in everyday use.
• SATA III - Caps out around 550 MB/s, which is ancient by NVMe standards but still a massive leap over any hard drive. The go-to for 2.5-inch bays, older systems, and cheap secondary storage.
• SAS - A server-focused interface built for reliability and multi-drive arrays. Won't work in a consumer motherboard, so ignore it unless you know you need it.

Buy for the interface your system actually supports, plus maybe one generation of headroom if you upgrade often. Paying for PCIe 5.0 on a PCIe 3.0 board is money spent on a number you'll never see.

Capacity is where most buyers under-spend and regret it within a year. Modern games routinely run 100 GB or more, and SSDs also slow down noticeably when packed near full, so give yourself breathing room.

• 128 GB - Effectively obsolete. Barely holds Windows and updates, and the price gap to 256 GB is tiny. Skip it.
• 256 GB - Workable as a dedicated boot drive in a system with separate storage, or for a light-use office machine. Tight for anything else.
• 512 GB - The practical minimum for a main drive. Fits your operating system, applications, and a handful of games or a modest media library.
• 1 TB - The value champion and the size most people should buy. Best cost-per-gigabyte in most sales, comfortable for gaming libraries, and the most common capacity for PS5 and handheld upgrades.
• 2 TB - Ideal for serious gamers, video editors working with 4K footage, and anyone tired of uninstalling things. Frequently discounted to within striking distance of 1 TB pricing.
• 4 TB - For large creative projects, sprawling game libraries, or consolidating multiple old drives into one. Prices have fallen sharply, though still a premium per gigabyte.
• 8 TB - Niche and expensive, aimed at media servers, archival work, and professional workflows. Verify your system and firmware recognize drives this large.

Aim for double what you currently use, and plan to keep about 10 to 20 percent free for peak performance. The upgrade from 1 TB to 2 TB usually costs far less than replacing a full drive later.

Read speed is the headline number on every box, and it's also the most oversold. Sequential speeds describe moving one enormous file; day-to-day computing leans far more on random access, where the differences between good drives shrink dramatically.

• Up to 600 MB/s - SATA territory. Boots in seconds, opens apps instantly, and feels worlds better than a hard drive. Only limiting when you regularly shuttle very large files.
• 600 to 2,000 MB/s - Entry-level NVMe, often DRAM-less budget drives. Fine for boot duty and general storage, though sustained large transfers will sag.
• 2,000 to 3,500 MB/s - Mature PCIe 3.0 performance. A strong value tier that handles gaming and content work without complaint.
• 3,500 to 5,000 MB/s - Entry PCIe 4.0. This range clears the PS5's 5,500 MB/s recommendation on some models but not all, so read carefully if that's your target.
• 5,000 to 7,000 MB/s - Mainstream high-end PCIe 4.0 and the safest choice for PS5 expansion. Excellent for 4K video editing and large asset libraries.
• 7,000 to 10,000 MB/s - Top-tier PCIe 4.0 and entry PCIe 5.0. Impressive on paper, though the real-world gain over 7,000 MB/s is hard to notice outside benchmarks.
• Over 10,000 MB/s - PCIe 5.0 flagships. Meaningful for professional data pipelines and scientific workloads, and they run hot enough to demand serious heatsinks.

For gaming and general use, anything above roughly 3,500 MB/s crosses into diminishing returns. Prioritize capacity and a DRAM cache over chasing the biggest sequential figure.

Different devices impose different requirements, and manufacturers now market drives directly at specific platforms. Matching the drive to the host saves you from thermal problems, physical misfits, and drives that simply won't be detected.

• PS5 - Requires an M.2 2280 NVMe PCIe 4.0 drive, with Sony recommending at least 5,500 MB/s read speeds and a heatsink. Look for listings that explicitly state PS5 compatibility and include a low-profile heatsink that clears the console's bay.
• Steam Deck - Uses the short M.2 2230 format. Stick to single-sided, low-power drives, since heat and battery drain matter enormously in a handheld.
• ROG Ally - Also M.2 2230. Same rules apply: compact, single-sided, and power-efficient beats raw speed every time.
• Laptop - Check for M.2 2280 versus shorter lengths, and whether the slot is NVMe or SATA. Single-sided drives are safer in thin chassis where clearance is minimal, and a heatsink may not fit at all.
• Desktop PC - The most forgiving platform, with room for heatsinks, add-in cards, and 2.5-inch bays. Confirm how many M.2 slots your board has and which PCIe generation each one runs at.
• Mac - Most modern Macs have soldered storage that cannot be upgraded. Older Intel Macs and some Mac Pro models accept drives, but often need proprietary adapters, so verify before buying.
• NAS - Prioritize endurance and sustained write performance over peak speed, since these drives run continuously. Some NAS units use M.2 slots only for caching.
• Mini PC - Space is tight and airflow is limited. Skip tall heatsinks and favor efficient, cooler-running drives.
• Server - Look for power loss protection, high endurance ratings, and U.2 or add-in card formats designed for continuous enterprise load.

Manufacturer compatibility claims are a helpful starting point, not gospel. Cross-check with your device's official documentation, especially for consoles and handhelds where clearance is measured in millimeters.

The NAND flash inside determines how long the drive lasts and how it behaves when you push it hard. This spec is buried in the fine print, but it explains most of the price difference between two drives with identical advertised speeds.

• 3D TLC NAND - Three bits per cell and the mainstream standard. The best balance of price, speed, and endurance, and what you'll find in nearly every well-reviewed consumer drive. Default to this unless you have a reason not to.
• 3D QLC NAND - Four bits per cell, which means more capacity for less money. The catch is lower endurance and a sharp write-speed drop once the fast cache fills, which shows up when copying very large batches of files. Fine for a game library or media archive you write to once.
• MLC NAND - Two bits per cell, with higher endurance and consistency. Now largely confined to enterprise and older premium drives, at a price to match.
• SLC NAND - One bit per cell, extremely durable and extremely expensive. Reserved for industrial and specialized applications, not consumer shopping.

For a primary drive that sees constant writes, 3D TLC is the reliable pick. Save QLC for cheap bulk storage where you're mostly reading data back, not writing it.

Cache is the unsung hero of real-world responsiveness. Two drives can post identical benchmark scores while one feels noticeably snappier during multitasking, and cache design is usually why.

• DRAM Cache - A dedicated memory chip that stores the drive's mapping tables. Delivers the most consistent performance under sustained load and better long-term reliability. Worth seeking out for a boot or working drive.
• DRAM-Less - Cuts the DRAM chip to cut cost. Perfectly adequate for secondary storage and light use, but performance degrades faster during heavy or prolonged writes. Common in budget models that still advertise big sequential numbers.
• SLC Cache - A portion of the NAND operated in fast single-bit mode to absorb incoming writes. Nearly universal, and it's what produces those headline speeds. Once it's exhausted mid-transfer, speeds fall to the drive's native rate, which is far lower on QLC drives.
• Host Memory Buffer - A clever middle path where a DRAM-less drive borrows a slice of your system RAM. Recovers much of the lost performance and works well in modern desktops and laptops, though support depends on the host system.

If a drive is your operating system's home, spend a little more for DRAM or at least confirm HMB support. For a bulk storage companion drive, DRAM-less is a reasonable place to economize.

Endurance is rated in TBW, or terabytes written, and it estimates how much data you can write over the drive's life. It's the closest thing to a durability score, and it also tends to set the warranty length.

• Under 200 TBW - Typical of small-capacity and budget QLC drives. Still far more writing than a casual user will do in five years, but thin margin for heavy workloads.
• 200 to 600 TBW - The normal range for mainstream 1 TB to 2 TB consumer drives. Comfortably covers gaming, office work, and general home use.
• 600 to 1,200 TBW - Found on larger capacities and prosumer models. A good target for video editors and anyone regularly writing large project files.
• 1,200 to 2,400 TBW - Workstation and light enterprise territory, suitable for databases, virtual machines, and NAS duty.
• Over 2,400 TBW - Enterprise-grade drives built for round-the-clock write-intensive operation. Overkill and overpriced for a home machine.

Compare TBW between drives of the same capacity, since bigger drives naturally rate higher. Most home users will replace a drive for more space long before they ever approach its write limit.

Extras separate a bare drive from a genuinely convenient one. Some, like heatsinks, materially affect performance; others are conveniences worth a couple of dollars, and a few are pure decoration.

• Heatsink - An aluminum block or fin stack that keeps a fast NVMe drive from overheating and slowing down. Essential for PS5 installs and high-end PCIe 4.0 and 5.0 drives, but check clearance first, since many motherboards include their own heatsink and laptops have no room at all.
• Graphene Cooling - A thin heat-spreading label used where a full heatsink won't fit. Modest but real benefit, and the right answer for laptops, mini PCs, and handhelds.
• Hardware Encryption - Built-in AES support, often with TCG Opal or eDrive compatibility, that secures data without taxing your CPU. Important for work laptops and anything holding sensitive files.
• Power Loss Protection - Capacitors that let in-flight writes finish during a sudden shutdown. A server and NAS feature that protects data integrity, rarely found on consumer drives.
• Cloning Software - Migration tools such as Samsung Data Migration or Acronis bundles that copy your existing drive to the new one. Saves hours compared to a clean reinstall, especially for first-time upgraders.
• Thermal Throttling Control - Firmware that manages heat intelligently instead of dropping performance off a cliff. Helps sustained transfers stay fast rather than stuttering.
• RGB - Lighting for windowed cases. No performance benefit, and it requires a visible slot and often software support to be worth anything.
• Mounting Screws Included - A trivial-sounding inclusion that matters, because M.2 screws are tiny, easily lost, and not always supplied with your motherboard.

Prioritize cooling and cloning software, both of which affect your actual experience. Treat RGB as a bonus rather than a reason to choose one drive over another.

The best drive depends entirely on the job. Thinking in terms of workload rather than raw specs is the fastest way to stop overpaying for numbers you'll never use.

• Gaming - Capacity beats speed here. A 2 TB PCIe 4.0 drive in the 5,000 to 7,000 MB/s range covers every current title, and load-time differences above that are measured in fractions of a second.
• Video Editing - Sustained write performance and endurance are what matter, since you're moving enormous files repeatedly. Look for DRAM cache, TLC NAND, high TBW, and generous capacity.
• Boot Drive - Responsiveness comes from random access, not sequential throughput. A 512 GB to 1 TB drive with DRAM cache feels excellent, and bundled cloning software makes the switch painless.
• Everyday Storage - Documents, photos, and general files don't stress a drive. A budget DRAM-less or QLC model, or even a 2.5-inch SATA drive, delivers plenty of speed for the money.
• Enterprise - Reliability outranks peak speed. Seek power loss protection, very high endurance, consistent sustained performance, and long warranty coverage.
• Handheld Console - Physical size and power efficiency come first. An M.2 2230 single-sided drive with graphene cooling protects both battery life and thermals in a cramped chassis.

Identify your dominant workload, then buy the cheapest drive that comfortably satisfies it. Money saved on unnecessary speed is better spent on extra capacity.

SSD brands split into companies that make their own NAND flash and companies that assemble drives from purchased parts. Neither approach is automatically better, but the first group tends to offer more consistent firmware and smoother warranty support.

• Samsung - The reputation benchmark, thanks to the 970 and 990 series. Excellent firmware, strong software including Magician and Data Migration, and reliable performance, at a price premium you're partly paying for peace of mind.
• Crucial - Micron's consumer arm, and consistently the best value in the category. The P3, P3 Plus, and T500 lines cover budget through enthusiast, all backed by in-house NAND.
• Western Digital - The Blue and Red lines serve mainstream desktops and NAS builds respectively, with solid reliability and clear product tiering.
• WD Black - The gaming-focused branch, with the SN770 and SN850X among the most recommended drives for PS5 and high-end PCs. Heatsink versions are widely available.
• SanDisk - Shares engineering with Western Digital and shows up frequently in portable and consumer-friendly packaging. Dependable mainstream performance.
• Seagate - The FireCuda line targets gamers with strong speeds and licensed PS5-ready heatsink models.
• Kingston - Reliable, widely stocked, and fairly priced. The NV series is a budget staple and the KC and Renegade lines cover performance builds.
• SK Hynix - Another NAND manufacturer, producing well-reviewed drives like the Platinum P41 that regularly compete with Samsung's best.
• Solidigm - The former Intel SSD business, focused on high-capacity and data-center-adjacent drives with excellent value at 4 TB and above.
• Adata - Broad lineup spanning budget to enthusiast, often undercutting bigger names on price. Read reviews for the specific model, as quality varies across the range.
• Corsair - The MP600 family is popular with PC builders, offering PCIe 4.0 and 5.0 options with substantial heatsinks and occasional RGB.
• Sabrent - Enthusiast favorite known for the Rocket series, aggressive high capacities, and good customer support.
• Lexar, TeamGroup, Patriot, PNY, Silicon Power, Transcend - Established second-tier assemblers offering strong price-to-performance. Fine choices when you check the individual model's specs and reviews rather than trusting the badge.
• Fanxiang, Netac, KingSpec, Move Speed, Inland - Budget brands that can deliver remarkable capacity per dollar. Expect shorter warranties, less predictable firmware, and thinner support, so reserve them for secondary storage rather than a boot drive.
• Micron, Intel, Hikvision, Mushkin, Gigabyte, Acer, Nextorage - A mixed group ranging from enterprise-focused to licensed consumer lines. Judge these strictly on the individual drive's specification sheet and warranty terms.

For a primary drive, established names with in-house NAND are worth the modest premium. For bulk secondary storage where a failure would be inconvenient rather than catastrophic, value brands are a legitimate way to stretch a budget.

Warranty length is a useful proxy for how much confidence a manufacturer has in its own hardware. Note that nearly all SSD warranties expire at whichever comes first, the time limit or the TBW rating.

• 1 Year - A red flag on any drive you plan to rely on. Common with the cheapest no-name options.
• 2 Year - Below average. Acceptable only for very inexpensive secondary storage.
• 3 Year - The standard for budget and mainstream consumer drives. Perfectly reasonable for general use.
• 5 Year - The mark of a quality drive and what most reputable brands offer on mid-range and premium models. This is the target to aim for on a main drive.
• 10 Year - Rare, and typically attached to enterprise or high-endurance models. Read the TBW cap closely, because heavy use will likely hit it first.

Treat five years as the benchmark for anything holding your operating system or important work. Also check whether support is handled locally or requires shipping overseas, since that detail shapes the experience far more than the number of years.