Why 8GB is running out of road, how resolution eats memory, and where upscaling fits in.
By the Let’s Compare Editorial Team · 1 min read · Updated September 24, 2026

A graphics card can have plenty of raw speed and still stutter and drop textures, simply because it ran out of video memory (VRAM). More and more, VRAM decides whether a card ages gracefully. No amount of core power makes up for too little of it.
| Resolution | Comfortable VRAM |
|---|---|
| 1080p | 8 GB (12 GB is safer) |
| 1440p | 12 GB or more |
| 4K / high textures | 16 GB or more |
For years 8GB was the comfortable mainstream figure. Not any more. German hardware testing at PC Games Hardware concludes that 8GB has for a while been insufficient for worry-free maximum-detail play, with modern games wanting 12GB or more, even at 1080p with aggressive upscaling in use. A card that runs short of VRAM has to swap data in and out, and you get stutter and lower-resolution textures however fast the GPU is.
Higher resolutions and texture settings consume more memory, so a 4K card needs more VRAM headroom than a 1080p one. As a rough guide, aim above the minimum for your resolution and plan to keep the card a few years. VRAM tends to age better than raw compute, because it's the hard wall that forces you to turn settings down.
A mid-range card with generous memory often outlasts a slightly faster one that's memory-starved.
Upscaling renders the game at a lower resolution and reconstructs a higher-resolution image, which boosts frame rates. NVIDIA's DLSS is a suite of AI neural-rendering techniques that run on dedicated Tensor Cores to raise FPS, cut latency and improve image quality. AMD's open-source FSR 3 adds frame generation on top of upscaling and runs across a wide range of GPUs. Either can give a card a second wind. Neither settles the VRAM question, since higher output resolutions and frame generation still need memory, so count upscaling as a bonus and still buy enough VRAM.
An RTX 4070 in a laptop and an RTX 4070 in a desktop are very different parts. Power limits explain why.
The facts and figures in this article come from the references below (some of them not in English), so you can check them yourself.