AMD lifts memory overclocking limitations on RX 7900 GRE — new Adrenalin driver increases limit to 3,000 MHz

AMD
(Image credit: AMD)

TechPowerUp has discovered that AMD has lifted the memory overclocking limits of its RX 7900 GRE graphics card, enabling gamers and overclockers to push the card's 16GB of GDDR6 to 3,000 MHz if they are so inclined. The new changes are part of AMD's new 24.3.1 Radeon Adrenalin GPU drivers, so you will need this new driver (or newer) to take advantage of the RX 7900 GRE's expanded overclocking range.

The RX 7900 GRE is a "newish" RX 7000 series graphics card from AMD. It first arrived as a Chinese-exclusive product but has since been made available worldwide as an independent product for DIY builders to purchase. The GPU sits between the RX 7800 XT and RX 7900 XT, featuring 80 CUs, 5,120 cores, and 16GB of GDDR6 operating on a 256-bit bus. The graphics card sits slightly closer to the RX 7800 XT (at least in 1440P gaming) and performs marginally better than an RTX 4070 Super in rasterized performance.

For some reason, AMD decided to limit the RX 7900 GRE's memory overclocking potential through a driver-based limiter when the card first came out. We suspect AMD did this to ensure the RX 7900 GRE's performance was properly segmented in its RX 7000 lineup, preventing serious overclocking from pushing the GPU's performance close to the RX 7900 XT.

(Image credit: TechPowerUp)

Regardless, we're glad the limiter was made through the driver, not the vBIOS. TechPowerUp explains that this method allowed AMD to quickly revert the memory overclocking limits previously applied with a single driver update. If the limit were placed in the graphics card's vBIOS (or GPU firmware), all of AMD's AIB partners would be forced to publish new BIOS updates for all RX 7900 GRE models on the market to revert the changes.

The memory overclocking slider now peaks at 3,000 MHz, yielding 22.8% more headroom than the GPU's previous overclocking limit of 2,316 MHz. TechPowerUp reports that it was able to overclock the RX 7900 GRE to 2,604 MHz (or 20 Gbps) with the new Adrenalin driver, which is faster than what the RX 7800 XT's memory runs at out-of-the-box — 19.5 Gbps. As a result, performance reportedly increased from 72.6 FPS to 77.1 FPS in 3DMark Time Spy GT1, yielding a 15% performance gain over stock speeds on the RX 7900 GRE.

Your mileage will vary; you might be able to exceed TechPowerUp's results, or you might not. Regardless, TechPowerUp could not get close to AMD's 3,000 MHz limit, which is good and means that most (if not all) overclockers will hit silicon limitations before AMD's artificial limiter becomes a real problem.

Aaron Klotz
Contributing Writer

Aaron Klotz is a contributing writer for Tom’s Hardware, covering news related to computer hardware such as CPUs, and graphics cards.

  • bit_user
    Nice! I think this addresses the card's main weakness. With more memory bandwidth, it should slot in nicely between the 7800 XT and 7900 XT.
    Reply
  • NeatOman
    🤞here's for hoping they lift OC limit on the 6800 non-xt🤞
    Reply
  • LabRat 891
    bit_user said:
    Nice! I think this addresses the card's main weakness. With more memory bandwidth, it should slot in nicely between the 7800 XT and 7900 XT.
    Indeed!
    It's *right behind* the 7900 XT w/ VRAM @ 2600Mhz or so.

    Reply
  • thestryker
    This was definitely the change needed to make this card a clear recommendation over the 7800 XT. I'd be surprised if any of the 7900 GRE cards won't be able to reach at least 19.5gbps that the 7800 XT runs default.

    I got a 1660 Ti over the super because I knew I could just OC the memory and run a vBIOS that matched the extra 5W power and get a fair bit more performance. If I was in the market for a new video card I'd jump on the 7900 GRE to have fun in the same fashion.
    Reply
  • The Historical Fidelity
    NeatOman said:
    🤞here's for hoping they lift OC limit on the 6800 non-xt🤞
    And the 6900xt, the memory OC limit is 2150mhz aka +150mhz over stock. I was very disappointed in that I can’t match the 6950xt’s memory speed of 2200 MHz.
    Reply