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We were WRONG about RAM – Or were we?

Linus Tech Tips@LinusTechTips1.6M viewsAug 20, 20229:57
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Check out the $14.99 Minnow set and the $19.99 Moray set at: ifixit.com For CPUs back in 2013, we said RAM speed didn’t matter. But as CPUs and GPUs have gotten faster and we move to DDR5, everyone’s suddenly very interested in memory. What changed, and were we wrong then, too? Discuss on the forum: linustechtips.com Buy an Intel Core i9-12900K: geni.us Buy a ASUS Maximus Z690 Hero: geni.us Buy a RTX 3080: geni.us Buy a DDR5 RAM 6000Mhz Ram Kit: geni.us Purchases made through some store links may provide some compensation to Linus Media Group. ► GET MERCH: lttstore.com ► SUPPORT US ON FLOATPLANE: floatplane.com ► AFFILIATES, SPONSORS & REFERRALS: lmg.gg ► PODCAST GEAR: lmg.gg FOLLOW US --------------------------------------------------- Twitter: twitter.com Facebook: @LinusTech Instagram: @linustech TikTok: @linustech Twitch: twitch.tv MUSIC CREDIT --------------------------------------------------- Intro: Laszlo - Supernova Video Link: youtube.com iTunes Download Link: itunes.apple.com Artist Link: soundcloud.com Outro: Approaching Nirvana - Sugar High Video Link: youtube.com Listen on Spotify: spoti.fi Artist Link: youtube.com Intro animation by MBarek Abdelwassaa @mbarek_abdel Monitor And Keyboard by vadimmihalkevich / CC BY 4.0 geni.us Mechanical RGB Keyboard by BigBrotherECE / CC BY 4.0 geni.us Mouse Gamer free Model By Oscar Creativo / CC BY 4.0 geni.us CHAPTERS --------------------------------------------------- 0:00 Intro 0:46 Theory 1: Test methodology was bad 2:50 Theory 2: Software is more complex now 4:12 Theory 3: GPUs are MUCH faster now 5:50 Theory 4: CPUs are MUCH faster now 7:46 So which theory was most right? 8:57 Conclusion: Why does RAM speed matter now?

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The video revisits a well known RAM myth from a 2013 video and examines why RAM speed may matter more now than it did back then. It starts by laying out four theories about RAM impact on modern systems: the old benchmarks were flawed, software has become more complex, GPUs have become much faster, and CPUs have also advanced significantly. The hosts attempt to reproduce the original test with updated hardware, swapping in a modern GPU and a faster CPU while keeping other variables constant to isolate RAM speed effects. Initial results with older settings show only marginal differences as RAM speed increases, suggesting the old conclusions might have some truth still hold. The discussion then expands to how game workloads, asset sizes, and multi-threaded CPU/GPU usage influence RAM bottlenecks. The team tests more modern scenarios, including Shadow of the Tomb Raider and Far Cry 6, to explore how RAM speed interacts with bigger textures and higher data throughput. They observe that with a contemporary RTX 2080 Ti, RAM speed does show material differences in some benchmarks like Metro and Tomb Raider, but the magnitude varies by title and setting. The conclusion emphasizes a nuanced view: RAM speed matters more when GPUs and software demand high bandwidth and when you upgrade other components over time, but it is not a universal performance lever in every scenario. The video closes by reaffirming that a balanced system and realistic workloads are key, and it hints that future testing with other CPUs or GPUs could yield different results. The sponsor segment is integrated and returns to the core message that RAM speed can influence performance depending on context, with an emphasis on practical takeaways for upgrading RAM alongside newer hardware.

Topics · technology · computer-hardware · gaming-performance · benchmarks · memory · cpus-gpus

Questions answered

Why does RAM speed matter more in some modern games than in older titles?
RAM speed matters when the GPU and CPU are fed data faster than before and when games have larger assets and more complex physics, which increases bandwidth and memory traffic. If the hardware is already bottlenecked elsewhere, faster RAM will have a smaller effect.
Do benchmarks from the 2013 video still apply today?
Not exactly. The overall message is refined: modern software and games change memory bandwidth demands, so RAM speed can influence performance under certain conditions, especially with high-end GPUs and data-heavy tasks.