How Many PCI Lanes Does Ryzen Have? [Explained]

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The most popular Ryzen CPUs like Ryzen 3, Ryzen 5, Ryzen 7, and Ryzen 9 have 24 PCIe lanes. You can find a total number of 24 PCIe lanes on consumer-grade Ryzen processors too.

However, the workstation or server grade Ryzen CPUs like the Threadripper series can have up to 128 PCIe lanes! While the mobile version of the Ryzen processors has 16 and APUS has 20 PCIe lanes.

A detailed description of which Ryzen CPU has and how many PCIe lanes are described in this article. So, let’s quickly find below the model of the Ryzen CPU that you’re looking for and learn how many PCI lanes the processor has.

how many pci lanes does ryzen have

A Brief Discussion on PCIe Version

Before you learn how many PCI lanes Ryzen processors have. Like PCIe ports, PCIe lanes can be Gen1, Gen2, Gen3, Gen4, and Gen5. Let’s have a look at the PCIe generations and their speed. It will help you identify which PCIe lanes on which Ryzen CPU is better.

PCIe GenerationBandwidthGigatransferFrequency
PCIe 1.08 GB/s2.5 GT/s2.5 GHz
PCIe 2.016 GB/s5 GT/s5 GHz
PCIe 3.032 GB/s8 GT/s8 GHz
PCIe 4.064 GB/s16 GT/s16 GHz
PCIe 5.0128 GB/s32 GT/s32 GHz
PCIe 6.0256 GB/s64 GT/s64 GHz

As you can see in the table above, the higher the PCIe generations are the more bandwidth, transfer rate, and frequency rate they consist. Now let’s get back to our topic below.

So, How Many PCIe Lanes Does Ryzen Have?

You may already know what the PCIe slots are and how to utilize them.  Normally Ryzen processors contain 24 PCIe lanes where only 20 are usable for plugging cards. For example, 16 lanes for PCIe slots and 4 lanes for M.2 NVMe slots.

Now, let’s check how many PCIe lanes are available on different generations of Ryzen CPUs.

1. Available PCIe Lanes on Ryzen 1st and 2nd generation

Although Ryzen 1st and 2nd Gen processors aren’t so popular nowadays as there are 3rd, 4th, & 5th gen Ryzen CPUs already available on the market, they are still worthy for budget PCs.

Ryzen 1000 and 2000 series processors have 24 lanes and mobile/laptop-grade Ryzen processors have 16 PCIe lanes.

2. Available PCIe Lanes on Ryzen 3rd Generation

Here is a list of Ryzen 3rd Gen CPUs and their number of PCIe lanes:

CPU ModelPCIe VersionNumber of LanesDevice
Ryzen 3 31004.024Desktop
Ryzen 3 3300X4.024Desktop
Ryzen 5 Pro 3200G3.020Desktop
Ryzen 5 35004.024Desktop
Ryzen 5 36004.024Desktop
Ryzen 5 Pro 36004.024Desktop
Ryzen 5 3600X4.024Desktop
Ryzen 5 3600XT4.024Desktop
Ryzen 7 Pro 37004.024Desktop
Ryzen 7 3700X4.024Desktop
Ryzen 7 3800X4.024Desktop
Ryzen 7 3800XT4.024Desktop
Ryzen 3 Pro 3200GE3.020(APU) Desktop
Ryzen 3 Pro 3200G3.020(APU) Desktop

As you can see in the table above, most 3rd generation CPUs have 24 Gen4 PCIe lanes while only the APU and exceptionally the Ryzen 5 pro 3200G has 20 Gen3 PCIe lanes.

This particular model has only 20 lanes because it already has integrated graphics and 16 lanes are for PCIe slots, while the rest 4 lanes are for the display card.

How Many PCIe Lanes on Ryzen 4th Generation?

Here is a list of Ryzen 4th Gen CPUs and their number of PCIe lanes:

CPU ModelPCIe VersionNumber of LanesDevice
Ryzen 3 4300U3.016Laptop / Mobile
Ryzen 5 4500U3.016Laptop / Mobile
Ryzen 5 4600U3.016Laptop / Mobile
Ryzen 5 4680U3.016Laptop / Mobile
Ryzen 5 4600HS3.016Laptop / Mobile
Ryzen 5 4600H3.016Laptop / Mobile
Ryzen 7 4700U3.016Laptop / Mobile
Ryzen 7 4800U3.016Laptop / Mobile
Ryzen 7 4980U3.016Laptop / Mobile
Ryzen 7 4800HS3.016Laptop / Mobile
Ryzen 7 4800H3.016Laptop / Mobile
Ryzen 9 4900HS3.016Laptop / Mobile
Ryzen 9 4900H3.016Laptop / Mobile
Ryzen 7 Pro 4750GE3.024Desktop (APU)

As you can in the above table that all the 4th gen Ryzen processors have 16 Gen3 PCIe lanes. This is because all these processors are for laptops. And only Ryzen 7 Pro 4750GE has 24 PCIe lanes as it is one of the more powerful APUs in the market.

How Many PCIe Lanes on Ryzen 5th generation?

Here is a list of Ryzen 5th Gen CPUs and their number of PCIe lanes:

CPU ModelPCIe VersionNumber of LanesDevice
Ryzen 5 55003.024Desktop
Ryzen 5 56004.024Desktop
Ryzen 5 5600X4.024Desktop
Ryzen 7 5700X4.024Desktop
Ryzen 7 58004.024Desktop
Ryzen 7 5800X4.024Desktop
Ryzen 7 5800X3D4.024Desktop
Ryzen 9 59004.024Desktop
Ryzen 9 5900X4.024Desktop
Ryzen 9 5950X4.024Desktop
Ryzen 3 5300GE3.024(APU) Desktop
Ryzen 3 5300G3.024(APU) Desktop
Ryzen 5 5600GE3.024(APU) Desktop
Ryzen 5 5600G3.024(APU) Desktop
Ryzen 7 5700GE3.020(APU) Desktop
Ryzen 7 5700G3.020(APU) Desktop
Ryzen 3 5300U3.016Laptop / Mobile
Ryzen 5 5600H3.016Laptop / Mobile
Ryzen 9 5900HX3.016Laptop / Mobile

According to the above table, you can see that all the 5th gen Ryzen processors for desktops have 24 GEN4 PCIe lanes (Except Ryzen 5 5500) and laptops have 16 GEN3 PCIe lanes. Only APUs like Ryzen 7 5700G & 5700GE have 20 GEN3 PCIe lanes.

How Many PCIe Lanes on AMD Ryzen Threadripper?

Here is a list of AMD Ryzen Threadripper CPUs and their number of PCIe lanes:

CPU ModelPCIe VersionNumber of LanesDevice
Ryzen Threadripper PRO 5945WX4.0128Desktop
Ryzen Threadripper PRO 5955WX4.0128Desktop
Ryzen Threadripper PRO 5965WX4.0128Desktop
Ryzen Threadripper PRO 5975WX4.0128Desktop
Ryzen Threadripper PRO 5995WX4.0128Desktop

As Threadripper CPUs are workstation CPUs, they need to use a lot of storage and other devices. For this, Threadripper CPUs offer 128 PCIe lanes which are 4 times more than a mainstream Ryzen CPU.

Bonus Tip: AMD Vs Intel PCIe Lanes

As AMD and Intel are the most popular CPUs, you may be wondering which one among them has more PCIe lanes and which is better. Well, the answer is that AMD Ryzen has more PCIe lanes than Intel Core CPUs and it does a better job when it comes to processors.

AMD Ryzen CPUs have on average 24 PCIe lanes; while Intel Core 10th Gen CPUs have only 16 and 11th & 12th Gen CPUs have only 20 PCIe lanes.

Again, all 16 PCIe lanes on an Intel CPU are used as PCIe slots. Only Intel CPUs with 20 PCIe lanes offer extra 4 lanes for M.2 slots. On the contrary, Ryzen CPUs with 24 PCIe lanes offer 16 lanes for PCIe slots, 4 lanes for M.2 slots, and the remaining 4 lanes for the chipset.

To learn more about how many PCIe lanes are available on your motherboard, check this article and if you want to add more PCIe slots and need a guideline, you can check it here.

Frequently Asked Questions And Answers

How Many PCIe Lanes Does Ryzen 5000 Have?

Ryzen 5000 processor has 24 PCIe lanes and the generation of the PCIe lanes is 3.0. It offers 16 PCIe lanes for PCIe slots, 4 PCIe lanes for display card/ M.2 slots, and 4 lanes reserved for the link to the chipset.

How Many PCIe Lanes Does AM4 Have?

AM4 has in total of 20 PCIe lanes and among them, 16 lanes are for PCIe slots and 4 lanes for hooking up the chipset.

How Many Lanes Does a Ryzen 5 5600 X Have?

Ryzen 5 5600X has 24 Gen4 PCIe slots where 16x are for a discrete graphics processor, 4x for storage (NVMe or 2 ports SATA Express), and additional 4x lanes are reserved for the chipset.


All the information about “how many PCI lanes does Ryzen have” is given above in this article and we hope you’ve got the answer to all of your questions after reading it. If you still have any questions in your mind, don’t hesitate to ask in our comment section below. Thanks for reading.

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