NVIDIA GeForce RTX 5090D hits record 4 GHz in impressive OC mod by Team OGS

A new RTX Blackwell GPU frequency record of 4 GHz was achieved using the GALAX HOF OC LAB variant of the GeForce RTX 5090D by Team OGS.

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Kosta Andreadis

Senior Editor

Published Jul 1, 2026 2:31 AM CDT

1 minute & 30 seconds read time

TL;DR: Team OGS set a new RTX Blackwell GPU frequency record by overclocking the GALAX HOF OC LAB GeForce RTX 5090D to 4002 MHz using an Elmor external clock board and LN2 cooling. This 4 GHz achievement surpasses the previous 3880 MHz record and was validated with the GPUPI benchmark.

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An NVIDIA GeForce RTX 5090D, in GALAX HOF OC LAB form, has become the first GPU in the RTX Blackwell lineup to break the 4 GHz barrier with a GPU core frequency of 4002 MHz achieved by Team OGS. As expected, this wasn't an out-of-the-box overclock, as it required an Elmor external clock board (ECB) and LN2 cooling to hit 4 GHz.

GeForce RTX 5090D sets new GPU frequency record, image credit: HWBOT/Team OGS.

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The world record has been verified and is already live on HWBOT, beating the previous record set by overclocker Splave at 3880 MHz on a GeForce RTX 5090. The GALAX HOF OC LAB variant of the GeForce RTX 5090D is a card built for overclocking, as it's rare for a GPU to ship with dual 16-pin power connectors and an impressive 36-phase power delivery design.

When paired with the Elmor ECB, the stock 27 MHz was increased by 6.3% to 28.7 MHz, which then flows on to all GPU frequencies. The Elmor ECB board can also increase GDDR7 speeds, but this record is all about the GPU core frequency. The 4 GHz record was validated using the GPUPI v3.3 - 32B synthetic benchmark, which means the completion time of 35 seconds and 377 milliseconds is the new record to beat.

Read more: GALAX's flagship RTX 5090 D sets new world records: 3650MHz GPU and 36Gbps GDDR7 speeds

NVIDIA GeForce RTX 5090D hits record 4 GHz in impressive OC mod by Team OGS 1

Now, it's worth noting that the 4 GHz barrier doesn't apply to Radeon cards, as the current GPU frequency record of almost 4.8 GHz was set on the mainstream Radeon RX 9060 XT earlier this year. As for Team OGS's build, the NVIDIA GeForce RTX 5090D was paired with the Intel Core i9 14900KF processor and 32GB of Corsair Vengeance DDR5 memory, with Thermal Grizzly Kryonaut Extreme and the Bitspower Strata LN2 GPU Pot for cooling.

Frequently Asked Questions

Question 01

Can owners of the GALAX HOF OC LAB RTX 5090D achieve similar 4 GHz frequencies using high-end air or AIO cooling instead of LN2 if they also use an Elmor ECB?

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Question 02

Does the Elmor external clock board require any BIOS or firmware changes on the RTX 5090D to raise the stock 27 MHz base to 28.7 MHz?

No. The article states the Elmor external clock board increased the stock 27 MHz to 28.7 MHz, but it does not mention any required BIOS or firmware changes on the RTX 5090D to achieve that frequency increase.

Answered

Question 03

Will the GALAX HOF OC LAB's dual 16-pin connectors and 36-phase power design be sufficient for sustained extreme overclocks without additional external power modification?

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Question 04

Are there any specific motherboard or CPU compatibility requirements (like VRM quality or PCIe lane stability) noted in the article for achieving the GPUPI verification run at 4 GHz?

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