Some GeForce RTX 5070 Ti owners are reportedly finding far more headroom in GDDR7 memory overclocking than standard tools normally allow. VideoCardz says users have pushed certain cards from the memory’s stock 28 Gbps to as high as 39 Gbps by using mVolt+ Extreme, a utility that can lift the usual memory offset cap.
One example highlighted by VideoCardz involved a Gigabyte RTX 5070 Ti Windforce owner who reportedly ran Samsung 28 Gbps GDDR7 at 39 Gbps with a +5500 MHz memory offset. The site says the RTX 5070 Ti uses a 256-bit memory interface, which would put theoretical bandwidth at 896 GB/s at stock, 1088 GB/s at 34 Gbps, and 1248 GB/s at 39 Gbps — roughly 39% above the standard figure.
Higher offsets than usual
VideoCardz says most mainstream overclocking tools top out at a +3000 MHz memory offset on this card, equivalent to 34 Gbps. Hydra Pro reportedly extends that to +4000 MHz, or 36 Gbps, while mVolt+ Extreme allows still higher values.
In the examples it cited, one ASUS Prime RTX 5070 Ti reportedly reached around +4500 MHz, another Gigabyte card worked at +5000 MHz, and a second user confirmed +5500 MHz, though artifacts reportedly appeared above that point. VideoCardz also said one tester hit +5500 MHz before a +6000 MHz setting immediately triggered a graphics driver restart.
Those results suggest the limit depends heavily on the specific card and memory modules. VideoCardz framed Samsung-equipped cards as especially notable here, while also noting that results vary.
Bigger bandwidth, smaller payoff
The interesting part is that the dramatic jump in raw memory speed does not appear to produce equally dramatic performance gains in the examples VideoCardz cited. The original tester reportedly saw roughly 1 FPS in Cyberpunk 2077 path tracing for every additional +1000 MHz of memory offset, which would amount to about a 5 to 6 FPS improvement from stock to +5500 MHz in that particular test.
Another user reportedly saw around 1.5% to 2% better performance in 3DMark Speed Way when moving from +3000 MHz to +5000 MHz. So while the bandwidth math is eye-catching, the real-world uplift described so far appears limited.
RTX 5090 reports point to a lower ceiling
VideoCardz also contrasted those RTX 5070 Ti results with reports from RTX 5090 owners in an Overclock.net thread. Despite also using 28 Gbps GDDR7, the site says one RTX 5090 user managed +3999 MHz and then worked around the interface to apply +4000 MHz, but anything above +4000 MHz still caused a driver reset.
That leaves an open question about why some RTX 5070 Ti cards appear able to go further than reported RTX 5090 results, even with similar-rated memory. For now, what seems clear is narrower: some RTX 5070 Ti owners are reportedly achieving unusually high GDDR7 memory overclocks, but the performance benefit shown so far is much smaller than the headline bandwidth increase.
