When The Coalition shipped Gears of War: E-Day, few expected the weaker of Microsoft’s current consoles to carry its stunningly detailed world without compromise. Yet after playing through the entire campaign and multiplayer modes on the Xbox Series S, it is clear that developer The Coalition pulled off something remarkable with a piece of clever engineering explained in a recent deep dive by Digital Foundry. Rather than gutting the experience for owners of the more affordable machine, the studio found a way to preserve visual fidelity — using the console’s SSD as an extension of its memory.
The achievement matters because the two current Xbox consoles are far from equals. The Series S carries just 10GB of RAM compared with the 16GB aboard the Series X, and historically that gap has been bridged by noticeably downgrading the less powerful version. This time, however, The Coalition chose a different path, one that lets it “avoid really lowering the quality of the game” while still delivering what players expect from the franchise’s latest entry.
Filling the Memory Gap With an SSD Trick
To understand why this matters, it helps to know how consoles handle data. Information is processed by the CPU and then pushed to RAM when it cannot fit elsewhere; if that space fills up as well, performance begins to suffer. The Series S’s smaller memory pool makes this a genuine constraint on a game of E-Day‘s ambition.
The Coalition solved the problem by turning the console’s fast NVMe drive into additional working memory. As Digital Foundry explains:
“The Coalition’s system lets the game use the NVMe drive as random access memory, giving the streaming system enough room to load and hold the complex city data. Memory that isn’t being actively accessed is stored on disk, and what’s needed at that moment is moved into system RAM. It’s similar to paged virtual memory, with one important difference: it only covers specific subsets of memory that the team has decided won’t slow the game down if they have to come back from the drive. The benefit is that, in exchange for a couple of gigabytes of storage on the SSD, you can gain about a gigabyte of usable system memory.”
Digital Foundry
The team then applied “advanced heuristics” to decide which assets should be sent to the drive and which should remain in active memory, minimizing the slowdown this process would otherwise introduce. The result is that the only major feature trimmed from the Series S version is Lumen reflections.
A Deliberate Trade-Off, Not a Stripped-Back Game
According to studio technical director Kate Rayner, this approach was intentional. It allowed The Coalition to ensure that Series S owners did not receive a watered-down version of the game’s meticulously crafted world — preserving the look and feel that defines Gears of War: E-Day even on hardware far removed from the flagship console.
In practice, the technique holds up well. The game does not carry the heavy visual downgrade seen in certain other recent blockbusters on the weaker console, though performance can fluctuate depending on the moment. As Digital Foundry notes, things can get especially rocky at various points during playthroughs, and my own time with the build included noticeable framerate chugging during some action cutscenes and chapter transitions.
It is a reasonable compromise for a machine many players picked up for around $300 back in 2020 — one that was never going to match the Series X on raw power but now comes far closer than it perhaps should.
Looking Ahead
Gears of War: E-Day is set to arrive next week, and The Coalition has been open about the challenges behind its creation. In related reporting, developers explained that they began development with an empty hard drive, building their entire gameplay sandbox from scratch — a process that also left some features such as meat shields and private lobbies out of the launch build.
The studio’s willingness to share the technical reasoning behind these decisions reflects a broader effort to be transparent about what it took to bring the game to every Xbox. As players prepare to jump in, the conversation around E-Day is already as much about engineering ingenuity as it is about the war-torn world waiting inside.
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