Your Next SSD Will Not Have DRAM. Here's why Host Memory Buffer (HMB) is replacing it in 2026, and why that's fine.
If you have been shopping for an SSD any time in the past decade, you have probably seen the advice repeated in every forum and every review: buy a drive with DRAM. It was one of the few pieces of hardware guidance that almost everyone agreed on. DRAM meant fast. DRAM meant reliable. DRAM-less meant budget. End of discussion.
Five days ago, one of the most respected tech publications ran an article with a headline that would have been unthinkable two years ago: buy a DRAM SSD now, before they disappear entirely. The piece was not about a niche product segment — it was about the mainstream SSD market shifting away from dedicated DRAM caches altogether, driven by the same AI-fuelled memory shortage that has reshaped every corner of the storage industry in 2026.
Phison — the company that makes the controller inside most consumer SSDs — unveiled its latest Gen5 controller, the E37T, with one conspicuous omission: no DRAM cache. At Computex 2026, Phison’s Director of Technical Marketing confirmed what the spec sheet implied: the company had been watching DRAM capacity increasingly absorbed by AI infrastructure since 2024, and had designed its next generation around a world where DRAM simply is not available for consumer drives at the volumes or prices it used to be.
This is not a cost-cutting decision disguised as innovation. It is the storage industry adapting to a supply reality that is not going away. And the technology that replaces DRAM — called Host Memory Buffer — is significantly better than most people realise.
Why DRAM Was the Default for So Long
To understand why this shift matters, it helps to understand what DRAM actually did inside an SSD — and why it was considered essential.
Every SSD has a map. When your operating system asks the drive to read or write data, the drive’s controller needs to know exactly where that data physically lives on the NAND chips. This map — called the Flash Translation Layer — is critical to performance. Without fast access to it, every read or write operation requires the controller to search for the right location, which adds latency.
DRAM stored that map on a dedicated, fast memory chip soldered directly onto the drive. Lookups were instant. The controller always knew where everything was without delay. This made DRAM-equipped drives consistently fast, especially under heavy random workloads where thousands of small reads and writes happen per second. For years, this approach was the undisputed best practice.
The trade-off was cost and power. A DRAM chip adds to the bill of materials, consumes power, generates heat, and takes physical space on the PCB. In a normal market, those trade-offs were acceptable. In the 2026 market, they have become untenable for most consumer drives.
The Lending Library Analogy
Think about a lending library that keeps a card catalogue — a physical index of every book and exactly which shelf it sits on. For decades, the card catalogue was the fastest way to find anything. You walked in, flipped to the right card, and went straight to the shelf. That was DRAM.
Now imagine the library runs out of space for the card catalogue. The cabinets are needed for something else — something that pays more and is in higher demand. So the library installs a digital terminal connected to the city’s central database instead. The terminal is in the same room. It accesses the same information. The lookup takes a fraction of a second longer than flipping a card — but the difference is so small that most visitors cannot tell.
That terminal is Host Memory Buffer. Instead of storing the map on a dedicated chip on the drive, HMB borrows a small slice of your system’s main RAM — typically 32 to 64 megabytes — to cache the same translation layer. Your system RAM is fast. The PCIe bus connecting the drive to the CPU is fast. The lookup happens over a path that barely adds latency compared to having the map on-drive.
For the vast majority of what you do on a PC — booting, launching apps, gaming, browsing, working — the difference between a DRAM lookup and an HMB lookup is not something you will ever perceive.
Why the Industry Is Moving This Direction Now
The shift away from DRAM is not happening because HMB suddenly got better. HMB has existed since NVMe 1.2 in 2014. What changed is the economics of putting a DRAM chip on a consumer SSD.
Here is what the 2026 market looks like from inside the supply chain:
Factor | What Changed | Impact on Consumer SSDs |
AI data centre DRAM demand | AI servers require 8–10x more memory per rack than traditional infrastructure | DRAM supply diverted upstream before reaching consumer products |
DRAM contract prices | TrendForce projected conventional DRAM prices up 90–95% QoQ in Q1 2026 | Adding a DRAM chip to a consumer SSD now costs significantly more than 18 months ago |
Consumer SSD margins | NAND prices up 4x+, retail prices cannot fully absorb the increase | Brands cutting DRAM to maintain viable pricing — or exiting consumer market entirely |
Controller design direction | Phison E37T (Gen5), Maxio MAP1806 (Gen5), Silicon Motion SM2508 — all DRAM-less | Next generation of controllers designed without DRAM from the start |
Brand exits | Crucial exited consumer market February 2026 | Fewer DRAM-equipped alternatives available on shelves |
The trend is structural, not cyclical. When all three major controller manufacturers design their next-generation chips without DRAM support as the default configuration, the direction is set. Future consumer SSDs will overwhelmingly use HMB — not because it is cheaper (though it is), but because the DRAM that used to go into your SSD is now going into AI servers where it generates ten times the margin.
What HMB Actually Does — And Why It Works
Host Memory Buffer is not a workaround. It is an NVMe specification feature — standardised, tested, and refined over multiple generations. Here is how it functions in practice:
When you install an HMB drive, the SSD’s controller requests a small allocation of your system RAM — typically 32 to 64 megabytes — through the PCIe bus. This allocation caches the Flash Translation Layer map, exactly as DRAM would. The key difference is that the memory lives on your motherboard rather than on the drive itself.
Modern HMB implementations have closed the performance gap with DRAM to the point where independent benchmarks consistently show near-identical results for consumer workloads. The reasons are straightforward: PCIe Gen4 and Gen5 provide enormous bandwidth between the drive and the CPU. System DDR5 RAM is fast. The FTL map is small relative to the available bandwidth. The bottleneck that DRAM solved — slow access to the translation layer — is no longer a bottleneck when the alternative path runs over a high-speed PCIe link to fast system memory.
Where HMB runs at its best is exactly where most consumers spend their time: random reads at low queue depth. That is your OS booting, apps launching, games loading, files opening. At QD1 random reads — the metric that governs how snappy your PC feels, as covered in an earlier post on this blog — modern HMB drives perform within a few percentage points of their DRAM-equipped equivalents.
Two Things Worth Understanding Before Your Next Purchase
The SSD market is in the middle of this transition right now. Some drives on the shelf still have DRAM. Most new designs do not. Here is how to navigate the shift without overthinking it.
Check whether the drive uses HMB, and whether your system supports it. Every modern Windows 10 and 11 system with NVMe support handles HMB automatically — the drive requests the memory allocation during boot, and the OS grants it transparently. You do not need to configure anything. The only scenario where HMB does not work is a system with an extremely old BIOS or a platform that predates NVMe 1.2 support — and if you are buying a Gen4 or Gen5 drive, your platform is new enough that this is not a concern.
Stop filtering drives by “has DRAM” as an automatic quality signal. This was sound advice in 2022. In 2026, it eliminates most of the best-value and even many of the best-performing drives on the market. The Phison E31T controller that powers multiple Gen5 drives — including models that PCWorld has called among the fastest DRAM-less Gen5 SSDs tested — is DRAM-less by design, not by compromise. Filtering it out because it lacks DRAM means filtering out the controller architecture the industry has converged on. Judge drives by their actual benchmark performance, warranty length, and the transparency of their component specifications — not by the presence or absence of a legacy feature that the supply chain can no longer sustain at consumer price points.
Frequently Asked Questions
1. If HMB borrows system RAM, does that mean my PC loses memory?
Technically yes, but the amount is negligible. A typical HMB allocation is 32 to 64 megabytes — that is 0.1% to 0.2% of a 32GB system. You will never notice this allocation in your available memory, and the operating system manages it automatically. If your system has 8GB or less of RAM, the allocation is proportionally larger but still far too small to affect performance. The trade-off is invisible in practice.
2. I have an older DRAM-equipped SSD. Should I replace it with an HMB drive?
Not for the sake of the technology change alone. If your current DRAM drive is fast, healthy, and has enough capacity, keep it. The reason to upgrade is the same as it has always been — you need more space, more speed, or your current drive is approaching end of life. When you do upgrade, the fact that the new drive is HMB rather than DRAM should not be a concern. It is simply what modern drives are.
3. Do any brands still sell DRAM-equipped consumer SSDs in 2026?
A few models remain — primarily Samsung’s 990 Pro and some SK Hynix drives. However, the selection is shrinking rapidly, prices are elevated due to DRAM costs, and several previously DRAM-equipped product lines have transitioned to HMB in their latest revisions. The trend is clear: DRAM-equipped consumer drives are becoming legacy products, not the standard. Buying one is not wrong, but buying one specifically because it has DRAM is paying a premium for a feature whose practical advantage has narrowed considerably.
4. Does HMB affect gaming performance at all?
No, in any way you would notice. Game loading is dominated by sequential reads (pulling large asset files from storage) and random reads at low queue depth (loading scattered texture and shader files). Both of these workloads perform nearly identically on HMB and DRAM drives in every published benchmark. Your frame rates, load times, and install speeds will be the same.
5. The addlink drives I have been reading about on this blog are all HMB. Is that a coincidence?
It is a design choice that reflects where the industry has moved. addlink’s NVMe lineup — the S85, A93, and G55H — all use HMB-based controllers from Phison and Maxio. These are the same controller families that independent reviewers have tested and praised, and the same architecture that every major controller manufacturer is building its next generation around. The 5-year warranty on each drive covers the full lifespan of the product regardless of the cache architecture. HMB is not a limitation in addlink’s lineup — it is the standard the rest of the industry is now adopting.
The Verdict: So What Should You Actually Do?
Here it is in plain terms:
If you are buying your first NVMe SSD or upgrading from a SATA drive: Do not let the DRAM question complicate your purchase. Modern HMB drives deliver the performance you will actually experience in daily use — boot times, app launches, game loading, file transfers — at the price points that make Gen4 and Gen5 accessible. The addlink S85 at Gen4 with HMB is the clean entry point: honest specs, proven controller, 5-year warranty, and performance that matches what you will feel at the keyboard.
If you are upgrading a PS5 or building inside a thermal-constrained case: The addlink A93 uses HMB and clears Sony’s 5,500 MB/s threshold at 7,400 MB/s with a PS5-designed heatsink. For gaming workloads, which are overwhelmingly read-heavy, the A93’s performance is consistent and well within Sony’s recommended tier. Single-sided, heatsink included, built for the slot.
If you are building an AI workstation or handling sustained heavy workloads: The addlink G55H at Gen5 uses the Phison E31T controller — the same DRAM-less architecture that PCWorld reviewed as one of the fastest in its class. At 10,300 MB/s, the bandwidth ceiling for model loading and pipeline throughput is real. Pair it with 32GB or 64GB of addlink Spider S5 DDR5 and your system RAM is doing double duty — running your applications and supporting the drive’s HMB allocation simultaneously.
You can explore the full addlink NVMe lineup at addlink.com.tw/m-2-pcie-ssd. The SSD market is moving to HMB — not reluctantly, not as a compromise, but because the technology works and the economics of the alternative no longer add up. The next drive you buy will almost certainly be DRAM-less. That is not a downgrade. It is where the industry lives now.
Are you still holding out for a DRAM drive, or have you already made the switch to HMB? Drop a comment — we are curious how many people are still filtering by DRAM in 2026.
Amazon:https://shorturl.at/ei8X2
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