# Corsair FRAME 4000D RS ARGB Mid-Tower ATX Case

Source: https://www.ranked10.co.uk/tech/best-pc-cases/corsair-frame-4000d-rs-argb
Ranked #1 in "Best PC Cases 2026: 10 Ranked, and Why the Fan Count Misleads": https://www.ranked10.co.uk/tech/best-pc-cases

- Price: £87.99 (checked on Amazon UK on 2026-09-19)
- Amazon rating: 4.7 from 1,888 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B0DFHNV7TK?tag=ranked10-21

The Corsair FRAME 4000D RS ARGB is the case at the top of this guide: £87.99, rated 4.7 out of 5 across 1,888 ratings. It is a mid tower built around Corsair's FRAME modular system, with three RS ARGB PWM fans already fitted in the front and an InfiniRail steel rail for rearranging the rest.

It is also the listing where the fan figures hold up. The title says 3x pre-installed RS ARGB fans, the second bullet says the same, and the spec table's "Number of Fans" field reads 3 — the contents, not a capacity. The capacity is quoted separately, as "up to twelve 120mm fans" in the Compatible Devices line, so the two numbers are describing two different things rather than contradicting each other. The other figures sit in the same table: Fan Size reads 140 mm, the InfiniRail bullet quotes up to 200 mm in the front and 140 mm in the roof, Internal Bays Quantity reads 3, and Antenna Location reads "Gaming". Everything on this page is taken from the Amazon listing, not from a test of our own.

## Specification

| Field | Value |
|---|---|
| Price | £87.99 |
| Rating | 4.7 out of 5, from 1,888 ratings |
| Fans fitted | 3x Corsair RS ARGB PWM, pre-installed in the front |
| Fans the case holds | Up to twelve 120mm, per the Compatible Devices line |
| Fan size | 140 mm (as listed) |
| Internal bays | 3 (as listed) |
| Expansion slots | 7 |
| Antenna location | Gaming (as listed) |

## Questions people ask

**How many fans come with the Corsair FRAME 4000D RS ARGB?**

Three. The title says "3x Pre-Installed RS ARGB Fans", the second bullet says three Corsair RS ARGB PWM fans are pre-installed in the front, and the spec table's Number of Fans field also reads 3. On this listing the field matches the box.

**Does "Number of Fans: 3" mean the case holds only three fans?**

No. The same listing's Compatible Devices line gives a capacity of up to twelve 120mm fans, so the 3 is the contents figure and the twelve is the capacity figure. Both are on the Corsair FRAME 4000D RS ARGB product page.

**Why does the spec table list "Antenna Location: Gaming"?**

It does, as listed. A case has no antenna. That field appears on the FRAME 4000D RS ARGB listing and tells you nothing about the chassis.

**Which motherboard and graphics card sizes does it take?**

The Supported Motherboard field reads ATX, and the Compatible Devices line lists ATX motherboards, full-size graphics cards and expansion cards up to 400mm in length.

**How many USB ports does the front panel have?**

Three. Both the Total USB 3.0 Ports and Total USB Ports fields read 3.

**Is a power supply included with the Corsair FRAME 4000D RS ARGB?**

The listing does not say one is included. It lists standard PSUs among the compatible devices and gives the mounting type as rear mount.