DDR5 RAM Prices: Cost per GB by Capacity

DDR5 desktop memory: what this page tracks

DDR5 is the current desktop memory generation, and it is where most of the price pressure of the 2026 shortage has landed. This page tracks 210 in-stock DDR5 desktop kits on Amazon US and prices every one of them per gigabyte of total kit capacity, so a 32GB pair and a 64GB pair can be compared on the same footing. Everything numeric on the page is computed when you load it; nothing is a snapshot pasted in by hand, which matters in a market where a printed price can be wrong by the time it is read.

We treat DDR5 the way the rest of this site treats every category: levels are levels and changes are matched. The cheapest kit today is a fact about the shelf, useful for deciding what to buy today. A percentage change is a claim about the market, and the only defensible way to make it is to compare each kit against its own earlier price. Our record for these kits starts on the date shown in the index panel, so for now the honest headline is the level, with the change following as the record lengthens.

The rated speed printed beside each kit is the maker's stated specification and we show it as a specification and nothing more. We do not rank kits by it, and we do not say any speed is worth paying for. What a stated speed means in your machine depends on your board, your processor's memory controller and whether you enable the kit's profile, and none of that is something a price table can know.

Is the bigger kit cheaper per gigabyte today?

Today the cheapest gigabyte on this generation is at 32GB ($8.63) and the dearest is at 128GB ($14.47). Moving up the ladder the larger kit is cheaper per gigabyte at 0 of 3 steps. Step by step: 32GB to 64GB: $8.63 to $13.75 per gigabyte (+59.3%), so the 64GB kit is dearer per gigabyte; 64GB to 96GB: $13.75 to $14.17 per gigabyte (+3.0%), so the 96GB kit is dearer per gigabyte; 96GB to 128GB: $14.17 to $14.47 per gigabyte (+2.2%), so the 128GB kit is dearer per gigabyte.

Read that as the state of the shelf on the date above and not as a rule. The comparison is between each capacity's single cheapest in-stock kit, so it moves whenever one cheap kit sells out or appears, and a ladder that bends one way this week can bend the other next week with no seller changing a price.

The platform reality: the board decides

DDR5 memory will not fit a DDR4 board and DDR4 memory will not fit a DDR5 board. The modules have the same number of contacts but the notch is in a different place, so the wrong generation physically will not seat. That makes the board, not the price, the deciding fact: if your motherboard takes DDR4, no DDR5 price on this page is relevant to you.

As we read the public platform documentation, current AMD AM5 desktop platforms take DDR5 only, older AM4 platforms take DDR4 only, and Intel has shipped some generations in both variants, with the memory type set by the specific board rather than the processor. That last point is the one that catches people, which is why we say only what is general and send you to your board's manual for what is specific. The physical differences between the generations are covered in DDR4 vs DDR5, and we link it rather than restate it.

Two more platform facts are worth having before you buy. Kits are rated to a speed that is normally reached by enabling a stored profile in the BIOS, XMP on Intel boards and EXPO on AMD boards; with the profile off, a board runs the module at a default speed the standard sets. And every DDR5 module has on-die error correction built into the chip, which is a property of how DDR5 is made and is not the same as system-level ECC. Unbuffered ECC DDR5 exists, we record it as a separate class and we keep it out of every figure here.

What to do with this

The case for buying DDR5 is simple and narrow: you are building or upgrading a platform that takes it and you need the capacity. The case against buying, in this market, is broader. If your machine has the memory it needs, the price you would pay today is an elevated one by every source we cite, and adding capacity you do not use converts an inflated price into a permanent cost. The pages on how much you need and on whether to wait exist because the honest answer is often 'not yet' or 'not that much'.

If you do need to buy, size the purchase to the job, compare per gigabyte at the capacity you actually need, and prefer a sale from the maker's own storefront or an authorised seller over a price that undercuts the market. A kit priced far below the plausibility floor for its capacity is a reason to look harder at the seller, not a reason to hurry, for the reasons set out on the hub page.

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