TECH NEWS – A user slightly (or not so slightly) boosted the memory clock on one of Blackwell architecture’s higher-end graphics cards, achieving remarkable results.

One user achieved a 21% higher VRAM clock speed on their GeForce RTX 5070 Ti equipped with SK Hynix GDDR7 memory, resulting in a significant performance boost. Recently, reports emerged that Nvidia has started using SK Hynix GDDR7 memory modules. Until now, the company typically relied on Samsung memory chips for the GeForce RTX 5000 series, but has apparently begun sourcing modules from SK Hynix to improve supply.

Initially, it was expected that the RTX 5070 would be the first card to feature this change, but it appears the RTX 5070 Ti has made the switch as well. Forum user michelelee shared this discovery on Chiphell. He attempted to flash the BIOS of an Aorus Master RTX 5070 Ti onto a Gigabyte RTX 5070 Ti Gaming OC to unlock a higher power limit. However, since the Aorus Master version uses Samsung GDDR7 memory, flashing its BIOS bricked the Gaming OC. Nevertheless, using the default BIOS, the Gaming OC with SK Hynix memory achieved a clock speed of 1750 MHz (28 Gbps), which is the standard memory clock speed for all RTX 50 series GPUs (except the RTX 5080). Through overclocking, the card easily reached 2125 MHz or 34 Gbps, representing a solid 21% increase.

hynix g7 oc tested by user michelelee. hynix g7 on 5070ti runs at 28gbps out of the box and it can be overclocked to 34gbps without problems. although bios for Samsung g7 can be flashed on cards that use hynix g7, the card will be bricked.

user michelelee on chh shares his… https://t.co/T6Yn7LjL3J pic.twitter.com/77ZLbYJRfn
— UNIKO’s Hardware 🌏 (@unikoshardware) April 26, 2025

Performance improvements were also observed. In Time Spy, the card’s score jumped from 28,460 to 30,426 with the overclock, marking a 7% performance increase. It’s important to note that this boost primarily comes from the higher clock speeds. Still, the overclock helped the RTX 5070 Ti achieve notably better results, showing clear benefits in gaming performance as well. Overall, SK Hynix’s GDDR7 memory appears to perform just as well as Samsung’s, with no noticeable drawbacks in either performance or compatibility.

At the moment, most RTX 5000 series graphics cards are still shipping with Samsung GDDR7 memory, but in the coming weeks, more Blackwell architecture GPUs featuring SK Hynix memory will likely appear. It’s worth noting that SK Hynix and Samsung are fierce competitors not only in GDDR but also in HBM memory markets.

Source: WCCFTech