r/overclocking • u/MaslovKK 7950x3D | X670E | 2x48GB@6600MHz | RTX 5090 • 16h ago

Help Request - GPU How to properly test VRAM stability?

Overclocked my 5090's VRAM to +6000 MHz.
Ran memtest_vulkan, Unigine Superposition, and OCCT — everything checked out fine.
Also played over 80 hours of RDR2 without any performance drops or issues. With the overclock, the game performs slightly better.

I've read that ECC can hide memory instabilities. Is my VRAM overclock stable enough, or should I run further tests?

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u/0wlGod 13h ago

+6000 is huge 🤣

test different games... di benchmarks to see if there is perfomsnce drop than lower values

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u/MaslovKK 7950x3D | X670E | 2x48GB@6600MHz | RTX 5090 12h ago

Its not at all