When it comes to squeezing every megabyte out of a system, the question of whether Linux really sips less RAM than Windows pops up again and again. To get a concrete answer, we built two identical test benches and ran them through a handful of everyday and gaming workloads. The goal was simple: see if swapping Windows for a Linux distro could be the cheapest “memory upgrade” you’ll ever need.
Does Linux Use Less RAM?
The short answer is: it can, but the advantage isn’t universal. In our tests, Linux consistently showed a lower idle footprint—often 200‑400 MB less than Windows 11 on the same hardware. When we opened a typical set of Chrome tabs, launched Discord, and kept a few background utilities running, the gap stayed roughly the same. The real differences emerged once we started loading games.
Our Test Setup
Both machines featured an Intel Core i7‑13700K, 32 GB of DDR5‑5600, and an NVIDIA RTX 4070. One drive held a clean Windows 11 installation; the other ran Ubuntu 22.04 LTS with the GNOME desktop. All drivers, game versions, and settings were kept identical to isolate the OS variable.
Real‑World Workloads
We measured RAM usage while performing five common scenarios:
- Browsing: Twenty Chrome tabs (mix of news, video, and social media) plus a few background extensions.
- Discord: Voice chat with screen share active, alongside the browsing session.
- Slay the Spire 2: A turn‑based indie title that’s light on GPU but still stresses system memory.
- Baldur’s Gate 3: A modern RPG known for its hefty memory footprint.
- Expedition 33: A newer open‑world adventure that pushes both CPU and RAM.
Across the board, Linux used roughly 10‑15 % less RAM than Windows during the browsing and Discord tests. With Slay the Spire 2 the difference narrowed to about 5 %, while the heavier titles—Baldur’s Gate 3 and Expedition 33—showed virtually no advantage; in fact, a few runs saw Linux marginally higher due to driver overhead.
“If your daily driver is mostly web‑based productivity, chat, and light gaming, switching to a lightweight Linux distro can shave off a few hundred megabytes of RAM usage—enough to notice on a 8 GB system.”
Conclusion
So, is Linux the secret RAM upgrade you’ve been waiting for? For everyday tasks and modest gaming, yes—you’ll likely see a measurable reduction in memory consumption, which can translate into smoother multitasking or the ability to stretch an older rig a bit longer. For AAA gaming at high settings, the OS choice matters far less than your GPU and CPU; the memory savings become negligible.
Ultimately, the decision to switch should weigh more than just RAM numbers. Consider software compatibility, driver support, and personal comfort with the Linux ecosystem. If those boxes check out, the memory bonus is a pleasant side effect.
Sponsor Message
Protect your personal data with DeleteMe. US consumers can grab 20 % off any plan by visiting joindeleteme.com and using promo code LTT20 at checkout. International plans are available here.
Channel Partners
- Secretlab: Grab a TITAN Evo ergonomic gaming chair – secretlab.com
- PIA: Get the VPN of our choice – privateinternetaccess.com
- dbrand: Buy a “Circuit” series skin for your device – dbrand.com
More LTT
- ► SHOP LTT PRODUCTS
- ► GET EXCLUSIVE CONTENT ON FLOATPLANE
- ► DIVE DEEPER ON THE LTT LABS WEBSITE
- ► SPONSORS, AFFILIATES, AND PARTNERS
Purchases made through some store links may provide compensation to Linus Media Group. Affiliate links powered in part by Impact.com.
Linus Sebastian is an investor in Framework Computer, Inc and HexOS by Eshtek.
