A Gigabyte RTX 5070 Ti owner pushed its GDDR7 to 39Gbps, lifting theoretical bandwidth by 40 per cent with a specialist utility.
According to TweakTown and the original Reddit post the card was a 16GB Gigabyte Windforce RTX 5070 Ti, whose GDDR7 memory runs at 28Gbps by default. That gives it 896GB/s of memory bandwidth on its 256-bit bus.
Using mvolt+ Extreme, the owner applied a +5500MHz memory offset. The reported effective speed reached 39Gbps per memory module, pushing total bandwidth to 1,248GB/s.
That is about 40 per cent above the card’s stock bandwidth. It is a striking number, though memory bandwidth does not translate directly into an equal increase in game performance. Most mainstream graphics-card utilities cap GDDR7 memory offsets at about +3000MHz. TweakTown says MSI Afterburner is among the tools with that limit, while mvolt+ Extreme lets users push beyond Nvidia’s restrictions.
The owner said the overclock remained stable for 30 minutes in Cyberpunk 2077 with path tracing enabled. The same user reported gaining “about +1 FPS for every +1000[MHz] on the memory”. At the maximum offset, that suggests a gain of only a few frames per second in the tested setup.
No published set of game benchmarks compares stock and overclocked performance across different titles. The reported bandwidth increase is clear; the wider gaming benefit remains uncertain. For context, 1,248GB/s is about 240GB/s more than the RTX 4090’s stock memory bandwidth. That comparison covers memory throughput alone, not overall graphics performance.
Other RTX 5070 Ti owners in the discussion reported reaching +5000MHz or +5500MHz offsets. One Asus Prime RTX 5070 Ti owner said their card topped out at about +4500MHz.
The results underline how much overclocking headroom can vary between cards. The utility bypasses Nvidia’s official limits, and pushing a particular card to its own ceiling carries the usual risk of instability.
