Buying Guide
The Best PC Cases for the RTX 4090
Six cases with at least 392mm of GPU room, compared on airflow, radiator support and size for an RTX 4090.
By Alex Morgan, PC Hardware Editor
12 min read6 products evaluated
The RTX 4090 Founders Edition is 304mm long and three slots thick, and partner cards are often longer. The 16-pin power cable also needs space to leave the card without a sharp bend.
We compared the GPU length, cooler height and radiator limits the case makers list; we did not build in these cases ourselves.
Quick Picks
Which of the 6 picks to look at first. Tap a name for the full analysis.
Best Fit for an RTX 4090
Lian Li LANCOOL 216392mm of GPU room with two 160mm front fans.
Best for: Airflow-first builds.
Check price for Lian Li LANCOOL 216 on Amazon (opens in a new tab)
Best Glass Showcase
be quiet! Light Base 600 DX400mm of GPU room with a full glass front and an anti-sag bracket.
Best for: Show builds with a heavy card.
Check price for be quiet! Light Base 600 DX on Amazon (opens in a new tab)
Best Full Tower
Fractal Design North XL413mm of GPU room with three 140mm fans.
Best for: Big radiators alongside the card.
Check price for Fractal Design North XL on Amazon (opens in a new tab)
Best Micro-ATX Pick
CORSAIR 2800X RS-R410mm of GPU room with three side intake fans.
Best for: Compact mATX builds.
Check price for CORSAIR 2800X RS-R on Amazon (opens in a new tab)
Most Fans Included
MONTECH King 95 PROSix fans on a 10-port controller with 420mm of GPU room.
Best for: Ready-to-run cooling.
Check price for MONTECH King 95 PRO on Amazon (opens in a new tab)
Smallest Case Here
Lian Li A3-mATX (Wood)415mm of GPU room in 26.3 litres.
Best for: Smaller footprints.
Check price for Lian Li A3-mATX (Wood) on Amazon (opens in a new tab)
Our Picks
Best Fit for an RTX 40901 of 6
Lian Li LANCOOL 216
The Lancool 216 is built around two large 160mm front fans and a clear path to the graphics card, with 392mm of GPU room.
Best for
- Airflow-first builds.
Skip if
- Skip it if GPU clearance matters most to you; the King 95 PRO offers 420mm.
Why we like it
Radiators up to 360mm mount on top or at the bottom, which leaves the front free for intake. The motherboard tray switches between air-cooling and water-cooling layouts, and three Velcro straps behind the tray bundle cables. Fine mesh front and top panels feed airflow.
Its 392mm GPU clearance is the shortest in this group; the King 95 PRO leads at 420mm. On largest radiator size it ties with the Light Base 600 DX, the King 95 PRO and the A3-mATX at 360mm. It shares ATX motherboards with the Light Base 600 DX; the 2800X RS-R goes with micro-ATX motherboards.
It also comes with a removable top radiator bracket and mounts for up to ten 120mm fans. The Lancool 216 takes 360mm radiators; mind RAM height. Its price falls between the A3-mATX and the Light Base 600 DX, based on our last check.
Key specs
- Max GPU length
- 392mm
- Largest radiator
- 360mm
- Fans included
- 3
- Motherboards
- ATX
Pros
- Fits a 360mm radiator
- 3 fans included
- Two 160mm front fans
- 360mm radiator mounts on top and bottom
Cons
- GPU clearance trails the King 95 PRO (420mm)
- Costs more than the 2800X RS-R at the time of writing
The catch
If GPU clearance is your priority, the King 95 PRO (420mm) is the stronger choice.
Best Glass Showcase2 of 6
be quiet! Light Base 600 DX
The Light Base 600 DX pairs a full glass front and side with dual 360mm plus 240mm radiator support.
Best for
- Show builds with a heavy card.
Skip if
- Price-first buyers should look at the 2800X RS-R, which cost less when we checked.
Why we like it
It fits a 400mm graphics card and a 170mm tower cooler, with an anti-sag bracket included. The dual radiator support means a 360mm CPU cooler and a 240mm GPU loop can run side by side, though the maker doesn't state a fan count. Its 400mm GPU clearance ranks fifth of 6 here, behind the King 95 PRO (420mm) and ahead of the Lancool 216 (392mm).
On largest radiator size it ties with the Lancool 216, the King 95 PRO and the A3-mATX at 360mm. It shares ATX motherboards with the Lancool 216; the 2800X RS-R goes with micro-ATX motherboards. GPU limit in the Light Base 600 DX: 400mm, before front fans.
The Light Base 600 DX takes 360mm radiators; mind RAM height. Its price falls between the Lancool 216 and the King 95 PRO, based on our last check.
Key specs
- Max GPU length
- 400mm
- Max CPU cooler height
- 170mm
- Largest radiator
- 360mm
- Motherboards
- ATX
- Glass
- Full glass front and side
Pros
- Room for graphics cards up to 400mm long
- Takes tower air coolers up to 170mm tall
- Fits a 360mm radiator
- Full glass front and side
Cons
- Costs more than the 2800X RS-R at the time of writing
Best Full Tower3 of 6
Fractal Design North XL
The North XL scales Fractal's wood-fronted design up to E-ATX boards, 413mm graphics cards and a 420mm front radiator.
Best for
- Big radiators alongside the card.
Skip if
- Skip it if price comes first: the 2800X RS-R cost less when we checked.
Why we like it
Three 140mm Aspect fans come fitted, and a 360mm radiator can go on top at the same time as the front one. With that 420mm front radiator installed, GPU room drops to 380mm. It takes E-ATX, ATX, mATX and mITX boards, with wood and alloy details on the front.
Its 413mm GPU clearance ranks third of 6 here, behind the King 95 PRO (420mm) and ahead of the Lancool 216 (392mm). On largest radiator size it leads this guide at 420mm, ahead of the Lancool 216 (360mm). GPU limit in the North XL: 413mm, before front fans.
The North XL takes 420mm radiators; mind RAM height. It was the most expensive pick when we checked, so weigh what it adds over the King 95 PRO.
Key specs
- Max GPU length
- 413mm
- Largest radiator
- 420mm
- Fans included
- 3
- Motherboards
- E-ATX, ATX, mATX, ITX
Pros
- Room for graphics cards up to 413mm long
- Fits a 420mm radiator
- 3 fans included
- Three 140mm Aspect PWM fans
Cons
- Costs more than the 2800X RS-R at the time of writing
The catch
Buyers who need a confirmed CPU cooler clearance should compare it with the King 95 PRO, which comes in at 175mm.
Best Micro-ATX Pick4 of 6
CORSAIR 2800X RS-R
The 2800X RS-R puts three reverse-rotor intake fans in its side panel so the lit side faces the glass.
Best for
- Compact mATX builds.
Skip if
- Its largest radiator size is not published, which rules it out if you need that number.
Why we like it
It has 410mm of GPU room in a Micro-ATX footprint. Wraparound glass shows off the build, and three reverse-rotor fans in the side panel pull air in. It suits a showcase build.
Its 410mm GPU clearance ranks fourth of 6 here, behind the King 95 PRO (420mm) and ahead of the Lancool 216 (392mm). Micro-ATX motherboards is unique to it among these picks, while the Light Base 600 DX uses ATX motherboards. It is the only pick here with a glass side and front; the Light Base 600 DX has a full glass front and side instead.
You also get PWM and ARGB fan headers. GPU limit in the 2800X RS-R: 410mm, before front fans. It undercut the A3-mATX and every other pick on price at the time of writing.
Key specs
- Max GPU length
- 410mm
- Fans included
- 3
- Motherboards
- Micro-ATX
- Glass
- Glass side and front
Pros
- Room for graphics cards up to 410mm long
- 3 fans included
- Glass side and front
- Three reverse-rotor RS120-R intake fans in the side panel
Cons
- No published largest radiator size
The catch
The maker doesn't give its CPU cooler clearance; if that figure matters, the King 95 PRO comes in at 175mm.
Most Fans Included5 of 6
MONTECH King 95 PRO
The King 95 PRO curves 4mm glass around the front and side and ships with six fans on a 10-port controller, drawing air in from the side and bottom.
Best for
- Ready-to-run cooling.
Skip if
- If budget leads, the 2800X RS-R was cheaper at our last price check.
Why we like it
It has 420mm for the GPU and 175mm for the cooler. On GPU clearance it leads this guide at 420mm, ahead of the A3-mATX (415mm). On largest radiator size it ties with the Lancool 216, the Light Base 600 DX and the A3-mATX at 360mm.
It also offers quick-release glass panels and a dual-chamber layout. GPU limit in the King 95 PRO: 420mm, before front fans. The King 95 PRO takes 360mm radiators; mind RAM height.
185mm is the King 95 PRO's PSU length cap. Its price falls between the Light Base 600 DX and the North XL, based on our last check.
Key specs
- Max GPU length
- 420mm
- Max CPU cooler height
- 175mm
- Largest radiator
- 360mm
- Max PSU length
- 185mm
- Fans included
- 6
- Glass
- Curved 4mm glass front and side
Pros
- Room for graphics cards up to 420mm long
- Takes tower air coolers up to 175mm tall
- Fits a 360mm radiator
- 6 fans included
Cons
- Costs more than the 2800X RS-R at the time of writing
Smallest Case Here6 of 6
Lian Li A3-mATX (Wood)
The A3-mATX fits a 415mm graphics card and a 360mm radiator into 26.3 litres, and the power supply can sit at the front or the side.
Best for
- Smaller footprints.
Skip if
- Skip it if largest radiator size matters most to you; the North XL offers 420mm.
Why we like it
ATX, SFX and SFX-L units are all listed. On GPU clearance it sits mid-pack at 415mm: the King 95 PRO comes in at 420mm, and the Lancool 216 comes in at 392mm. It matches the Lancool 216, the Light Base 600 DX and the King 95 PRO on largest radiator size (360mm).
You also get mounts for up to ten 120mm fans, a wood front with steel mesh panels and four expansion slots. GPU limit in the A3-mATX: 415mm, before front fans. The A3-mATX takes 360mm radiators; mind RAM height.
Boards: mATX, ITX. When we checked, only the 2800X RS-R cost less, and the Lancool 216 cost more.
Key specs
- Max GPU length
- 415mm
- Largest radiator
- 360mm
- Volume
- 26.3L
- Motherboards
- mATX, ITX
- PSU type
- ATX, SFX or SFX-L
Pros
- Room for graphics cards up to 415mm long
- Fits a 360mm radiator
- Front or side PSU mounting
- Mounts for up to ten 120mm fans
Cons
- Largest radiator size trails the North XL (420mm)
- Costs more than the 2800X RS-R at the time of writing
The catch
If you want a confirmed CPU cooler clearance, look to the King 95 PRO instead: it comes in at 175mm, while this one gives no figure.
How We Chose These Cases for RTX 4090
Alex Morgan compared the manufacturer specifications, connectivity, warranty terms and compatibility of every pick. Figures come from the makers unless a third-party source is named; we did not test these products ourselves.
- What we compared
- We set side by side six cases on GPU clearance, CPU cooler clearance, largest radiator size and fans included from manufacturer specifications. We did not test them in-house, and CPU cooler clearance and largest radiator size are missing for at least one pick.
- The shared baseline
- All 6, from the Lancool 216 to the A3-mATX, state GPU clearance.
- Where the specs have gaps
- The Lancool 216, the North XL, the 2800X RS-R and the A3-mATX give no CPU cooler clearance; the 2800X RS-R gives no largest radiator size.
- Price range
- At our last check the picks ran from the 2800X RS-R ($50 to $100) to the North XL ($150 to $250).
What to Look for in a Case for RTX 4090
Key buying criteria so you get the right fit the first time.
How much GPU clearance you need
Here GPU clearance runs from 392mm on the Lancool 216 to 420mm on the King 95 PRO, a 7% spread. For less, the A3-mATX is the runner-up at 415mm ($50 to $100 tier).
Largest radiator size across these picks
The North XL tops largest radiator size at 420mm and the A3-mATX sits lowest at 360mm. The North XL is the pick for largest radiator size. The 2800X RS-R gives no largest radiator size figure, so 5 of 6 picks are compared here.
Cable management behind the motherboard tray of a PC case CPU cooler clearance
The King 95 PRO tops CPU cooler clearance at 175mm and the Light Base 600 DX sits lowest at 170mm. If CPU cooler clearance is your first filter, the King 95 PRO sets the ceiling at 175mm. The Lancool 216, the North XL, the 2800X RS-R and the A3-mATX give no CPU cooler clearance figure, so 2 of 6 picks are compared here.
What to check at home
GPU limit in the Lancool 216: 392mm, before front fans. GPU limit in the Light Base 600 DX: 400mm, before front fans. GPU limit in the North XL: 413mm, before front fans.
A case interior with a tower cooler and a graphics card installed Features beyond the spec table
The 2800X RS-R: PWM and ARGB fan headers. The King 95 PRO: quick-release glass panels. The A3-mATX: mounts for up to ten 120mm fans.
How to Choose a Case for RTX 4090
By priority
| Priority | Consider | Why |
|---|---|---|
| Airflow-first builds | Lancool 216 | 392mm of GPU room with two 160mm front fans |
| Show builds with a heavy card | Light Base 600 DX | 400mm of GPU room with a full glass front and an anti-sag bracket |
| Big radiators alongside the card | North XL | 413mm of GPU room with three 140mm fans |
| Compact mATX builds | 2800X RS-R | 410mm of GPU room with three side intake fans |
| Ready-to-run cooling | King 95 PRO | Six fans on a 10-port controller with 420mm of GPU room |
| Smaller footprints | A3-mATX | 415mm of GPU room in 26.3 litres |
Scroll sideways to see every column.
Key specs side by side
The King 95 PRO leads on GPU clearance at 420mm, ahead of the A3-mATX at 415mm. "Not listed" marks CPU cooler clearance where the Lancool 216, the North XL, the 2800X RS-R and the A3-mATX leave the figure out.
| Case | Max GPU length | Max CPU cooler height | Largest radiator | Fans included |
|---|---|---|---|---|
| Lancool 216 | 392mm | Not listed | 360mm | 3 |
| Light Base 600 DX | 400mm | 170mm | 360mm | Not listed |
| North XL | 413mm | Not listed | 420mm | 3 |
| 2800X RS-R | 410mm | Not listed | Not listed | 3 |
| King 95 PRO | 420mm | 175mm | 360mm | 6 |
| A3-mATX | 415mm | Not listed | 360mm | Not listed |
Scroll sideways to see every column.
By price at the time of writing
At our last check the cheapest pick, the 2800X RS-R, sat in the $50 to $100 tier, 3 tiers in all up to the North XL at $150 to $250; Amazon prices move, so recheck before buying.
| Price tier | Cases |
|---|---|
| About $50 to $100 | 2800X RS-R, A3-mATX, Lancool 216 |
| About $100 to $150 | Light Base 600 DX |
| About $150 to $250 | King 95 PRO, North XL |
Frequently Asked Questions
Which has the longest GPU clearance: the King 95 PRO or the A3-mATX?
Between the top two, it is 420mm on the King 95 PRO against 415mm on the A3-mATX, a 1% difference. The Lancool 216 is at the other end of this group with 392mm.
How does the Lancool 216 compare with the North XL on largest radiator size?
The North XL leads at 420mm, with the Lancool 216 at 360mm. No largest radiator size figure is published for the 2800X RS-R, which leaves 5 of 6 picks ranked here.
How does the Light Base 600 DX compare with the King 95 PRO on CPU cooler clearance?
The King 95 PRO leads at 175mm, with the Light Base 600 DX at 170mm. No CPU cooler clearance figure is published for the Lancool 216, the North XL, the 2800X RS-R and the A3-mATX, which leaves 2 of 6 picks ranked here.
Is the North XL worth paying more than the 2800X RS-R?
The spec sheets show GPU clearance (413mm against 410mm) in its favour. The 2800X RS-R sat in the $50 to $100 tier and the North XL in the $150 to $250 tier when we checked, with 4 other picks between them; pay the difference only if GPU clearance decides your purchase.
What makes the North XL the Best Full Tower?
It earns the label for 413mm of GPU room with three 140mm fans. The 2800X RS-R, the cheapest pick, sat in the $50 to $100 tier against $150 to $250 here, without out-ranking it on any listed spec. It suits big radiators alongside the card.
What should I check before buying the A3-mATX?
GPU limit in the A3-mATX: 415mm, before front fans. The A3-mATX takes 360mm radiators; mind RAM height. In this guide it ranks sixth of 6, as our Smallest Case Here pick, and second of 6 on GPU clearance (415mm).
Bottom Line
Lian Li's Lancool 216 is the best airflow case for an RTX 4090 here. The Light Base 600 DX suits glass builds, the North XL is the full-tower choice, and the Corsair 2800X or Lian Li A3 keep things compact.
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About the author
PC Hardware Editor
Alex covers PC hardware, monitors, components, upgrades and peripherals for The PC Journal, with a focus on helping readers understand specifications, compatibility and meaningful product trade-offs.
Covers: Monitors, Graphics cards, Processors, PC components, Peripherals, Upgrades and compatibility
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