Vertical GPU mounts have become an extremely popular way to display your graphics card. Pair a vertical GPU mount with a glass side panel and your PC build becomes centered around your graphics card with it being front and center. With the soaring price of graphics cards, why wouldn't you want to show off these extremely expensive PC components? Some special edition graphics cards even feature aesthetic upgrades such as RGB or prints of your favorite anime characters.

However, the reality of vertical mounting your GPU is that it can cripple your performance thanks to restricted airflow. You spent $1000 on an RTX 4080 only to strap it to a $50 bracket that turns it into an oven. While you might want to show off your GPU, it's worth considering if it's really worth the damage it might cause.

Airflow restriction

What does a vertical GPU mount actually restrict?

When installing a GPU in your PC, it's typically installed horizontally. This means your GPU fans point downwards, allowing them to pull air through effectively and push hot air upwards. So long as this is paired with effective case fans, this hot air should then be pushed out through the exhaust of your PC rather than leading to your rig and other components from overheating.

If you decide to opt for a vertical mount, this leads to your case fans facing your side or glass panel of your PC. The air gap between your GPU and the side panel is very minimal, often around an inch or sometimes less if your GPU is larger, meaning air cannot be effectively pulled through.

Having your GPU vertical mounted can also lead to a re-circulation loop of hot air inside your PC. As your GPU fans can't access cool air to pull through, they can then pull back through the hot air they just exhausted, which can very quickly lead to overheating.

If your graphics card begins to overheat, this can lead to thermal throttling, where it aggressively reduces its clock speed in order to cool down once it's too hot. This can lead to significantly worse performance, lower frames if you're in a game, or even your entire PC shutting off if it cannot cool down quickly enough.

Having this occur multiple times can lead to long-term damage to your GPU or even other PC components. While it might be a small issue that you choose to ignore at first, this can cause severe problems with your entire rig moving forward.

Exceptions and alternatives

Stylish PCs don't have to come at a performance cost

The true solution here is opting for the best thermal setup, which is mounting your graphics card horizontally. This means it can effectively pull in cool air and expel the hot air without overheating or passing heat off onto the rest of your PC components. Other factors can also cause overheating, like a small case or lack of case fans, so ensure that your entire computer is optimized.

If you do want to vertically mount your GPU anyway, there are some steps you can take to ensure that your PC is not at risk of overheating. Opting for a custom bracket which ensures that your graphics card has enough clearance from your PC side panel. Ensure you have opted for a high quality riser cable as cheaper cable can introduce performance degradation and instability. This is particularly the case with older PCIe 3.0 cables.

Another option is picking up a case which specifically accounts for vertical mounting by having more room. It's worth noting that even these solutions still often rely on your graphics card exhausting into your side panel even if there is more room, which can still cause airflow issues.

Another step I'd recommend if you're opting for a vertically mounted GPU is to ensure you closely monitor your temperatures. Check what the safe max temperature is for your specific GPU and then, if you find that your graphics card is coming close to this, scale down your graphics settings in game or allow your PC regular breaks to cool down. However, even this isn't the best course of action, as reaching high temperatures can often cause damage.

Is the performance penalty worth it?

Don't spend so much on a GPU only to throttle it

Overall, while vertical mounting can cause some major issues whether it's poor airflow or even thermal throttling. There are some steps you can take to reduce the possibility of this, but you're still creating a self-imposed performance penalty in order to show off your graphics card. The best plan of action is to just mount your graphics card horizontally, as it's intended to be.

If you want to show off your graphics card, put it on your desk. If you want to use it for its maximum performance, then put it where it belongs: horizontal and unthrottled.