Can the RTX 4090 Do 4K at 240Hz?

Can the RTX 4090 Do 4K at 240Hz

The world of PC gaming is constantly pushing boundaries. On one hand, we have the NVIDIA GeForce RTX 4090, an absolute powerhouse of a graphics card boasting incredible processing muscle. On the other hand, the market is witnessing a surge in the popularity of 4K 240Hz monitors, promising unbelievably smooth and responsive gameplay.

But the burning question for many gamers is: can the RTX 4090 actually drive a 4K resolution at a staggering 240Hz refresh rate? Let’s dive deep into the technicalities and explore the answer in detail.

Unveiling the Bottleneck

While the RTX 4090 packs a serious punch, there’s a crucial factor at play here: the limitations of current DisplayPort versions on most NVIDIA cards. The widely used DisplayPort 1.4a simply doesn’t have the bandwidth necessary to push a 4K resolution at a buttery-smooth 240Hz. Think of it like a highway – a narrow lane can only handle so much traffic, and in this case, the data traffic required for 4K 240Hz is simply too much for DisplayPort 1.4a to handle efficiently.

It’s worth mentioning that HDMI 2.1 also has limitations, but its maximum theoretical bandwidth is slightly higher than DisplayPort 1.4a. However, even HDMI 2.1 falls short of what’s needed for uncompromised 4K 240Hz output.

Here’s where things get interesting. AMD’s Radeon RX 7000 series graphics cards boast support for the next-generation DisplayPort 2.1. This new interface offers significantly higher bandwidth, finally opening the door for smooth 4K 240Hz gaming on compatible monitors.

So, Can RTX 4090 Do 4K at 240Hz?

Can 4090 do 4k 240hz
The powerful RTX 4090 performance might be held back by other components in your PC

There’s no denying the raw power of the RTX 4090. This beast can handle even the most demanding games with impressive frame rates. However, achieving a consistent 240 fps at 4K resolution is a tall order, even for this top-of-the-line GPU.

Here’s the catch: While the RTX 4090 can undoubtedly render frames at a blistering pace, other components in your system can become bottlenecks. Your CPU, for example, plays a crucial role in feeding data to the GPU for processing. If your CPU isn’t powerful enough to keep up with the RTX 4090’s demands, it can create a bottleneck, hindering your ability to achieve those coveted 240 fps at 4K.

Potential Solutions?

The landscape of technology is constantly evolving. While the RTX 4090 with current DisplayPort limitations can’t deliver the full 4K 240Hz experience, there’s always a chance for future developments. Here are a couple of possibilities.

Driver Updates

NVIDIA might release future driver updates that optimize the RTX 4090 for better performance with high refresh rate displays. While this may not unlock full 4K 240Hz support, it could potentially improve compatibility and performance at slightly lower refresh rates.

DisplayPort Revisions

The adoption of DisplayPort 2.1 could become more widespread in the future. If and when that happens, the RTX 4090 might benefit from a performance boost for 4K high refresh rate gaming through a simple adapter upgrade (depending on the manufacturer’s implementation).

Alternative Solutions

Can the RTX 4090 Handle 4K Resolution at 240Hz
The RTX 4090 is absolutely phenomenal for 4K gaming at a smooth 120Hz refresh rate

So, what are your options if you’re looking to leverage the power of the RTX 4090 but can’t quite reach the 4K 240Hz dream? Here are a couple of compelling alternatives.

4K 120Hz Gaming

The RTX 4090 is absolutely phenomenal for 4K gaming at a smooth 120Hz refresh rate. You’ll still experience incredible visuals and responsiveness, and most modern games will likely run flawlessly at this resolution and refresh rate combination.

Higher Resolutions with Lower Refresh Rates

If you’re a die-hard resolution buff, consider exploring even higher resolutions like 8K with the RTX 4090 paired with a monitor that supports those resolutions, even if the refresh rate might be lower (e.g., 60Hz). This approach prioritizes stunning detail over lightning-fast refresh rates.

Final Thoughts

While the RTX 4090 is undoubtedly a powerhouse GPU, the current limitations of DisplayPort 1.4a on NVIDIA cards prevent it from achieving a flawless 4K 240Hz experience. However, there’s always potential for future advancements like driver updates or wider adoption of DisplayPort 2.1 that could change the game.

In the meantime, the RTX 4090 excels at delivering exceptional performance for 4K 120Hz gaming, or even pushing the boundaries of detail with higher resolutions like 8K. Ultimately, the choice depends on your individual priorities – prioritize smooth, high refresh rates, stunning visuals at high resolutions, or a balance between the two.


Q. Will the RTX 4090 ever be able to do 4K 240Hz?
A. There’s no guarantee, but future driver updates or wider adoption of DisplayPort 2.1 could unlock this possibility.

Q. Should I upgrade to the RTX 4090 for 4K gaming?
A. If you prioritize high refresh rates and have a compatible 4K 240Hz monitor with DisplayPort 2.1, consider the AMD Radeon RX 7000 series for now. However, the RTX 4090 remains a fantastic choice for exceptional 4K 120Hz gaming or pushing boundaries with higher resolutions.

Q. What CPU do I need to avoid bottlenecking the RTX 4090?
A. For optimal performance, pair the RTX 4090 with a high-end CPU like the latest Intel Core i9 or AMD Ryzen 9 series processors.

Q. Is 4K 120Hz a noticeable improvement over 4K 60Hz?
A. Absolutely! The jump from 60Hz to 120Hz offers a significant boost in smoothness and responsiveness, especially in fast-paced games.

Q. Should I prioritize resolution or refresh rate?
A. It depends on your preference. If you value razor-sharp visuals and detail, prioritize resolution. But if buttery-smooth gameplay is your top priority, focus on refresh rate.