A modern gaming PC has two big heat sources, and the cooler you pick for one changes how well the other runs. This guide to the best CPU and GPU coolers focuses on the whole system: which CPU coolers suit a hot graphics card, where to mount a radiator, which case fans help and how to tune a GPU that runs too warm.
Quick answer
For most gaming PCs, pair a dual-tower air cooler such as the Thermalright Peerless Assassin 120 SE with a well-ventilated case and two or three good intake fans, and leave the graphics card on its factory cooler. Choose a top-mounted 360mm AIO like the Thermalright Aqua Elite 360 V3 only when the CPU itself is very hot.
| Setup | CPU cooler | Where heat goes | Best for | Amazon US, Nov 2026 |
|---|---|---|---|---|
| Value air | Thermalright Peerless Assassin 120 SE | Rear exhaust | Most gaming PCs | about $35, 4.7 stars, 3,389 ratings |
| Compact air | ARCTIC Freezer 36 | Rear exhaust | Current platforms, tight budgets | about $22, 4.6 stars, 1,069 ratings |
| Premium air | Noctua NH-D15 chromax.black | Rear exhaust | Quiet high-end builds | about $120, 4.8 stars, 13,533 ratings |
| Budget 360mm AIO | Thermalright Aqua Elite 360 V3 | Top exhaust | Hot CPUs with a hot GPU | about $55, 4.6 stars, 404 ratings |
| Premium 360mm AIO | Corsair Nautilus 360 RS LCD | Top exhaust | Simple wiring and a screen | about $154, 4.6 stars, 891 ratings |
Prices and ratings are Amazon US snapshots as of November 2026 and will change. The table covers CPU coolers only, because the graphics card’s own cooler is the right GPU cooler for nearly every buyer.
How CPU and GPU cooling affect each other
The CPU and graphics card share the same case air. Whatever heat one part dumps inside the case raises the temperature of the air the other part breathes, so a cooler that looks great on the CPU alone can make the GPU run warmer if its exhaust has nowhere sensible to go.
That is why it helps to think of airflow as a path. Cool air should enter at the front or bottom, pass over the graphics card and CPU cooler, and leave through the rear and top. Each cooler type fits into that path differently, and the sections below explain how.
Air towers and the rear exhaust path
A tower cooler blows CPU heat toward the rear of the case, where a rear exhaust fan can push it straight out. Because the heat leaves behind the motherboard area, it has limited effect on the GPU below, as long as the case has enough intake to keep air moving.
That simple path is one reason a dual tower like the Peerless Assassin 120 SE works so well in gaming PCs. Thermalright lists a 155mm height and two 120mm fans, so it handles mainstream CPUs while working with, not against, the case’s natural front-to-back airflow.
AIO radiators and where to mount them
An all-in-one liquid cooler moves CPU heat to a radiator, so placement decides where that heat ends up. Mounted at the top as exhaust, a radiator pushes warm air straight out of the case. Mounted at the front as intake, it feeds air warmed by the CPU toward the graphics card.
Front mounting can still make sense when the top lacks room. Corsair, for example, lists the 4000D Airflow as taking a front radiator up to 360mm but cuts the maximum GPU length from 360mm to 340mm with a front AIO installed. Check both the airflow path and the GPU clearance before you choose.
Why a hot GPU dominates the case
In many gaming systems the graphics card produces more heat than the CPU during play, because games load the GPU heavily while many CPUs sit well below their limits. That makes case intake and exhaust more important than buying the largest possible CPU cooler.
A balanced setup puts most of your budget into a case with good front intake, adds fans where needed and pairs the CPU with a cooler matched to its power. Spending heavily on CPU cooling while the case starves the GPU rarely gives the result people expect.
Best CPU and GPU coolers setups by build type
The setups below pair CPU coolers with the airflow plan that suits each kind of build. Each pick has verified specs from the manufacturer or Amazon, and the notes explain how it interacts with a hot graphics card so you can choose by your whole system rather than by CPU temperature alone.
Value gaming PC: Thermalright Peerless Assassin 120 SE
For a typical gaming PC with a Ryzen 5, Ryzen 7 or Core i5, the Peerless Assassin 120 SE is our pick. Thermalright lists six 6mm heat pipes, a 155mm height and support for LGA 1851 to 115x plus AM5 and AM4, and the Amazon listing confirms two 1,550 rpm TL-C12C fans rated at 25.6 dBA.
It was listed around $35 on Amazon US as of November 2026 with 4.7 stars from about 3,400 ratings. That low price leaves money for case fans, which often help the GPU more than extra CPU cooling. Its heat goes out the rear, away from the graphics card.
Buy it if you want the simplest airflow-friendly setup for gaming. Skip it if your case cannot fit a 155mm tower or your CPU is a power-hungry flagship.
Budget current platform: ARCTIC Freezer 36
The Freezer 36 suits budget builds on AM5, AM4, LGA 1851 or LGA 1700. ARCTIC’s spec sheet lists a 159mm height, four 6mm heat pipes, two P12 PWM PST fans in push-pull at 200 to 1,800 rpm and a six-year warranty, with a contact frame for current Intel sockets.
The single-tower body is narrower than a dual tower, which can help in crowded cases where a large graphics card sits close to the CPU area. It was listed around $22 on Amazon US as of November 2026 with 4.6 stars from about 1,100 ratings. Note that AMD installs need the board’s original screws.
Buy it if you want warranty and a slim footprint for under $25. Skip it if you are on an older LGA 1200 or 115x board, which ARCTIC does not list.
Quiet high-end air: Noctua NH-D15 chromax.black
For a high-end gaming PC where low noise matters, the NH-D15 chromax.black is the premium air option. Amazon lists six heat pipes, two NF-A15 140mm fans, NT-H1 paste, SecuFirm2 mounting for current Intel and AMD sockets and a six-year warranty, with a highlighted height of 168mm.
It was listed around $120 on Amazon US as of November 2026 with 4.8 stars from about 13,500 ratings. Large, slow fans keep noise down, which matters when a busy graphics card already adds its own fan noise during long gaming sessions.
Buy it if your case has 170mm or more of cooler clearance and you want quiet, pump-free cooling. Skip it if tall RAM or a narrow case rules out a wide dual tower.
Hot CPU and hot GPU: Thermalright Aqua Elite 360 V3
When both chips run hot, such as a Core i9 with a high-end graphics card, a top-mounted 360mm AIO moves CPU heat straight out of the case. Intel lists 253W maximum turbo power for the Core i9-14900K, which is a heavy load to add to a busy GPU in the same enclosure.
Thermalright lists the Aqua Elite 360 V3 with TL-C12B-S V2 120mm fans at 1,500 rpm and 25.6 dBA, a 2,800 rpm pump, LGA 1851 to 115x and AM5 and AM4 support, and a three-year warranty. It was listed around $55 on Amazon US as of November 2026 with 4.6 stars from about 400 ratings.
Buy it if your case supports a 360mm top radiator and your CPU is a high-power chip. Skip it if the radiator would have to go in the front of a cramped case next to a long graphics card.
Simple premium AIO: Corsair Nautilus 360 RS LCD
The Nautilus 360 RS LCD is the premium AIO choice for builders who want fewer cables. Corsair says the Nautilus RS line plugs into the motherboard without a hub, with a 396 x 120 x 27mm radiator on the 360 model and a five-year warranty, plus LGA 1851, 1700, AM5 and AM4 support.
The Amazon listing for the white LCD version adds a 2.1-inch IPS screen and three RS120 fans up to 2,100 rpm. It was listed around $154 on Amazon US as of November 2026 with 4.6 stars from about 890 ratings. The standard 27mm radiator is easier to fit at the top than thicker designs.
Buy it if you want a 360mm AIO with simple wiring and a display. Skip it if a $55 360mm AIO or a good air tower already meets your needs.
GPU cooling options worth considering
Most graphics cards ship with large coolers designed for their specific board and power level, so replacing them is rarely worth the risk or cost. The better approach is to give the card cool air and, where needed, tune its settings. The options below cover what actually helps a GPU that runs hot.
Case intake fans
The cheapest GPU upgrade is often more intake. Front fans push cool air toward the graphics card, which then draws it through its own heatsink. If your case shipped with only one or two fans, adding another 120mm or 140mm intake fan can help the whole system.
Popular low-cost choices on Amazon US include the be quiet! Pure Wings 3 120mm PWM high-speed fan, listed around $14 with 4.7 stars from about 750 ratings, and the Noctua NF-P14r redux-1500 140mm fan, listed around $18 with 4.7 stars from about 820 ratings, both as of November 2026.
Power limits and undervolting
Graphics card makers and driver tools let you lower the power limit or the voltage curve. Reducing power draw cuts heat and fan noise, often with a small performance trade-off. Results vary by card, so change settings in small steps and check stability in the games you play.
The same idea applies to CPUs. Many motherboards let you set lower power limits for high-end chips, which reduces the heat dumped into the case and gives the graphics card cooler air. That can be more effective than buying a larger CPU cooler.
Aftermarket GPU coolers
Replacement GPU heatsinks and liquid-cooling kits exist, but we did not find any with a meaningful number of Amazon US ratings in our November 2026 data, and fit depends on the exact board layout of your card. We do not recommend them for typical buyers.
Swapping a GPU cooler can also affect your card’s warranty depending on the manufacturer’s terms. If your card runs hot, start with case airflow, fan curves and power limits, and contact the card maker if temperatures look abnormal even with good airflow.
FAQ
These answers cover common questions from builders trying to cool both the processor and the graphics card in one case. They use the manufacturer and Amazon US data gathered for this guide in November 2026, and they avoid temperature claims we could not verify from a published source.
What are the best CPU and GPU coolers for a mid-tower gaming PC?
For most mid-towers, use a dual-tower air cooler such as the Thermalright Peerless Assassin 120 SE on the CPU and keep the graphics card’s factory cooler. Then make sure the case has strong front intake and a rear exhaust fan. That combination is simple, affordable and works with the natural airflow path.
Should the AIO radiator go on the top or front?
Top exhaust is usually the better choice when a hot graphics card is installed, because the radiator’s warm air leaves the case instead of flowing toward the GPU. Front mounting can still work, but check your case’s GPU length limit, since Corsair cuts it to 340mm on the 4000D Airflow with a front AIO.
Will a better CPU cooler lower GPU temperatures?
Not directly. A CPU cooler only affects the GPU through the air inside the case. An efficient exhaust path, such as a tower blowing to the rear or a top-mounted radiator, keeps CPU heat away from the card, while adding intake fans usually helps the graphics card more.
Is a 360mm AIO overkill for gaming?
For many gaming CPUs it is, since games often keep the processor below its maximum power. A 360mm AIO makes sense for high-power chips like the Core i9-14900K, rated by Intel at up to 253W maximum turbo power, or when you want CPU heat to leave through the top of the case.
Conclusion
The best way to cool both chips is a balanced case, not the biggest cooler: pair a Thermalright Peerless Assassin 120 SE with strong front intake and a rear exhaust, and keep the GPU’s factory cooler. Move to a top-mounted Thermalright Aqua Elite 360 V3 only when your CPU itself draws flagship-level power.
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