How Many PCIe Slots Does the Mac Pro Have?

If you’re a professional content creator or power user, you may be wondering how many PCIe slots the Mac Pro has. The Mac Pro is Apple’s flagship desktop computer, designed to meet the needs of professionals in demanding industries such as video editing, 3D rendering, and scientific research. As such, it offers a range of high-end features and capabilities to help users push the limits of what’s possible on a desktop computer.

So how many PCIe slots does the Mac Pro have? The answer depends on which model you’re looking at.

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The current (2019) Mac Pro offers eight PCIe expansion slots. This is a significant increase over previous models, which typically offered only four or six PCIe slots. The eight PCIe slots in the 2019 Mac Pro are split across three different bays: four slots are located in the first bay, two in the second bay, and two in the third bay.

The first bay is perhaps the most important for most users, as it contains four double-wide PCIe slots that can accommodate full-length expansion cards. These slots support x16 Gen 3 lanes and can be used for a variety of purposes, including adding graphics cards for GPU-intensive workloads like video editing or rendering.

The second bay contains two half-length x8 Gen 3 slots that can be used for additional storage or I/O cards. Finally, the third bay houses two more half-length x8 Gen 3 slots that can be used for other types of expansion cards.

It’s worth noting that while the Mac Pro offers a large number of PCIe expansion slots compared to many other desktop computers on the market today, not all users will need or want to use all eight available slots. Many users may find that four double-wide PCIe slots in the first bay are sufficient for their needs, while others may require additional storage or I/O options provided by the second and third bays.

In addition to its eight PCIe expansion slots, the Mac Pro also offers a range of other high-end features and capabilities that make it an attractive option for professionals. These include support for up to 1.5TB of RAM, multiple high-speed Thunderbolt 3 ports, and a modular design that makes it easy to upgrade or replace components as needed.

In conclusion, the current Mac Pro offers eight PCIe expansion slots split across three different bays. Four double-wide PCIe slots in the first bay offer x16 Gen 3 lanes and can accommodate full-length expansion cards, while two half-length x8 Gen 3 slots in each of the second and third bays can be used for additional storage or I/O options. While not all users will need or want to use all eight available slots, the Mac Pro’s expandability and high-end features make it an attractive option for professionals in a range of industries.