NVIDIA's GeForce RTX 5090D from GALAX (HOF OC LAB) has become the first Blackwell GPU to hit an overclock of 4 GHz.
Team OGS Pushes NVIDIA's "GALAX HOF OC LAB" RTX 5090D To A Record 4 GHz Overclock
It was going to happen sooner or later, but a year and a half after launch, the NVIDIA GeForce RTX 5090D has been able to set the fastest clock speed ever recorded on a Blackwell GPU.
Team OGS from Greece was able to post the spectacular overclock record at HWBOT. The session featured a GALAX GeForce RTX 5090D graphics card, not the new V2 but the older one, which was equipped with the same-spec'd GPU core as the regular 5090, while the V2 variant came with a cut-down core and memory configuration.
First RTX 5090 @4GHz Core! (ECB @28.7MHz / +106.3%) cooled by Bitspower Strata LN2 GPU Pot and Kryonaut Extreme. Thanks to Galax, ASUS, Corsair and Thermal Grizzly for the support!
The variant in question was the GALAX HOF OC LAB that comes with a which comes with dual 16-pin connectors and offers an insane 36 phases.
Team OGS explained to us that they replaced the stock 27 MHz crystal with Elmor's ECB (External Clock Board). This board is used by extreme overclockers & allows hardware modifiers to bypass the onboard clock source with an adjustable external reference clock. As such, OGS was able to get a 28.7 MHz clock, a 6.3% increase, which shifted all GPU-related frequencies up by 6.3%. This also applies to the VRAM, which is boosted to 1860 MHz (vs the reference 1750 MHz clock).
Interestingly, with the same ECB board, extreme overclockers can get up to 2400 MHz clocks for the GDDR7; that's 38.4 Gbps speeds versus 28 Gbps on a standard RTX 5090.
Coming back to the result, the NVIDIA GeForce RTX 5090D was tested in GPUPI v3.3 - 32B, a pure GPU-oriented synthetic benchmark. Here, the graphics card achieved a stunning 4002 MHz or 4 GHz overclock speed while the memory was running at 1860 MHz (almost 30 Gbps).
With this overclock, TeamOGS claimed top spot with a completion time of 35 seconds and 377 milliseconds, beating the previously set score by over a second.
NVIDIA's RTX 5090D has been used by extreme overclockers in many record-breaking tests. The highest speed before 4 GHz was set by Splave at 3.88 GHz, so 4 GHz is an impressive benchmark set by OGS. AMD does retain the highest GPU frequency record of 4.769 GHz, achieved just a few months ago with its Radeon RX 9060 XT graphics card. The overclocking team has many more benchmark records to showcase in the future, and we wish them the best of luck in their extreme overclocking journey.
About the author: A Software Engineer by training and a PC enthusiast by passion, Hassan Mujtaba serves as Wccftech's Senior Editor for hardware section. With years of experience in the industry, he specializes in deep-dive technical analysis of next-generation CPU and GPU architectures, motherboards, and cooling solutions. His work involves not only breaking news on upcoming technologies but also extensive hands-on reviews and benchmarking.
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