What's the difference between 64x, 128x, 256x, 512x, 1024x for Minecraft texture packs

The "x" number in a Minecraft texture pack is the resolution per block face in pixels. Vanilla Minecraft is 16x. Bigger numbers mean sharper textures at the cost of more memory and rendering work.

What you get at each resolution with Optimum Realism:

• 64x (free) — 4× vanilla. Sharp enough for normal play. Runs on basically any hardware. Same coverage as the paid tiers: every block and entity that's done in 512x is also done in 64x. The free version is not a "demo".
• 128x — 8× vanilla. Noticeably crisper. Works on older PCs with shaders.
• 256x — 16× vanilla. Sweet spot for most modern PCs with shaders.
• 512x — 32× vanilla. Maximum detail in our pack. RTX 2060+ class GPU recommended if you also want a heavy shader.

Why we don't ship 1024x or 2048x:

Honestly: because the gains stop being visible. Past 512x, the difference between resolutions on a 1920×1080 monitor is barely perceptible in normal play — but the VRAM cost balloons. A 1024x pack can hit 4-6 GB VRAM usage by itself; 2048x easily hits 8-12 GB. Most users with that hardware would rather spend the VRAM budget on shader features (longer shadow distance, more reflection bounces) than on textures that look identical.

If you specifically want extreme resolutions for cinematic renders, packs that ship those (LEGENDARY RT, RuidSkin Ultimate, others) exist — they're purpose-built for screenshots, not gameplay.

The honest pick for most people: 256x with a cinematic shader. That's where the marketing screenshots are taken from. Going higher doesn't change much; going lower starts to lose detail in close-up shots.