Best GPU for 4K 120Hz
For smooth 120Hz gameplay at 4K, pick out one of these graphics cards

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High refresh rate monitors cannot be supported by all graphics cards available on the market. You need to be careful while selecting the best GPU for games running in 4K at 120Hz, as trying to match FPS can be quite demanding when in this resolution. Thus, we’ve compiled a list of the top GPUs for the job, along with an explanation of why you should buy each one.
Really, the ultimate GPU for playing any game in 4K is the RTX 4090, a GPU we have extensively reviewed and found there is no better when playing in this resolution. We understand not everyone can afford the best in the world, so have included some more affordable options that are also viable.
Best GPU for 4K 120Hz: RTX 4090
The RTX 4090 is the newer leader in performance. It is the card that will offer unhindered performance to reach the top range of framerates. Especially when it comes to 4K and high resolutions as they require much more VRAM and speed to work better with all the textures.
This also comes at a cost though, as one of the more expensive cards to pick from with an MSRP of $1500 USD, it isn’t exactly a cheap choice. But you can be sure to have it for a while.
MSI Gaming X Trio RTX 4090
Core Clock Speed
TBD
CUDA Cores
16,384
Memory Size
24GB GDDR6X
Dimensions
337 x 140 x 77 mm
PSU Required
850W
TDP
450W
Most affordable GPU for 4K 120Hz: RTX 3080
The RTX 3080 offers significant advancements over earlier versions. It now boasts 10GB of GDDR6X VRAM and enough Tensor cores to support 8K UHD resolution without any lag or stuttering. So it’s not a big deal to play games on a 4K 144Hz and 120Hz gaming monitor with this graphics card.
MSI Gaming GeForce RTX 3080 Gaming X Trio 10G
Clock Speed
1815MHz Boost Clock (OC)
VRAM
10GB GDDRX
Thermal Design
TRI FROZR Cooling Solution
Best 30-series GPU for 4K 120Hz
Although it is more expensive than an RTX 3080, the Nvidia RTX 3090 is still an excellent price for 4K gaming, and well worth the higher price tag if you can afford it.
ASUS TUF Gaming Nvidia GeForce RTX 3090 OC
Clock Speed
1770MHz Boost Clock (OC)
VRAM
24GB GDDR6X
Thermal Design
Axial-tech Triple Fan
Best AMD GPU for 4K 120Hz
Now on the more budget-friendly option, AMD Radeon has your back. The RX 7900 XTX comes in at a cheaper range but with performance not too far behind.
Which also means it has a better value for money. Although if you’re keen on ray tracing, Nvidia still leads in what its architecture can do in that.
ASRock AMD Radeon RX 7900 XTX AQUA
Core Clock Speed
2,510 MHz game, 2,680 MHz boost
Stream processors
6,144
Memory Size
24GB GDDR6
Dimensions
275 X 157 X 22mm
PSU Required
1000W
TBP
355W
All the above selections have their reasons for being the best GPU for 4K 120Hz gaming, however, we highly recommend you consider the RTX 4090. Nvidia’s flagship GPU has no rival and will enable you to play anything you like, no matter the setting, or refresh rate.