Nvidia RTX 5070 Ti: Memory Clock Pushed Significantly, Game Performance Sees Minor Gains
Using a third-party tool, the RTX 5070 Ti's GDDR7 memory was overclocked to 39 Gbps, boosting theoretical bandwidth to 1248 GB/s. However, actual in-game performance saw only modest improvements.
IT Home reports that a user has successfully overclocked the GDDR7 memory on a Nvidia GeForce RTX 5070 Ti graphics card using the third-party tool mVolt+ Extreme. The memory clock speed was increased from the default 28 Gbps to 39 Gbps, consequently raising the theoretical memory bandwidth from 896 GB/s to 1248 GB/s. This represents a 39% increase and surpasses the default bandwidth of the RTX 4090 by over 200 GB/s.
However, the performance uplift in actual gaming scenarios was notably less significant than the bandwidth increase. In Cyberpunk 2077 with ray tracing enabled, the user reported that each 1000 MHz increment in memory clock offset yielded approximately 1 FPS. Therefore, the +5500MHz offset resulted in a gain of only about 5 FPS.
Analysis suggests that the RTX 5070 Ti itself is not a bandwidth-bottlenecked card, with its default 896 GB/s bandwidth being sufficient for most gaming situations. The limited gains indicate that further bandwidth increases offer diminishing returns. In the Steel Nomad synthetic benchmark, however, the user did report a performance increase of around 20%.
The mVolt+ Extreme tool is designed to bypass the typical memory frequency limitations found in mainstream overclocking software like MSI Afterburner. Such unofficial tools carry hardware risks, and the user experienced driver crashes and instability when attempting offsets above +5500 MHz, indicating overclocking limits and variability between individual card samples.