Running a Plex server at home is a great way to watch your favorite movies and shows on any device. But knowing which is the best CPU for Plex can be confusing, particularly with so many AMD Ryzen options.
This article will address the question of what kind of Ryzen CPU for a Plex server you need based on your particular use case.
What Does a Plex Server Need From a CPU?
For a start, consider what your Plex server is actually going to be used for. Some people stream their own files directly without any alterations. That’s direct play and is simple for any recent CPU.
But if you’d like to do transcoding (converting the video format or resolution), you’ll need more power. That’s especially true of 4K videos or multiple users at one time.
Transcoding is the process of the server adjusting a video so it looks good on the device you’re watching it on (e.g., your phone or tablet). This uses your CPU heavily.
How to Decide Which CPU You Need

Here’s what to consider:
- Streams: How many people will watch simultaneously?
- Stream Quality: Will you like it in 1080p or 4K, etc.?
- Budget: What is your budget?
- Integrated vs. Dedicated Graphics: Do you need a CPU that is capable of processing graphics on its own, or will you be installing a separate graphics card?
Rules for Picking a Ryzen CPU
1. For One or Two 1080p Streams
If you’re running a single or dual 1080p stream, you don’t need a monster CPU.
- Ryzen 5 5600G (6 cores with integrated graphics)
- Ryzen 7 5700G (8 cores with integrated graphics)
These CPUs contain on-board GPUs (known as Radeon Vega) that offer help with hardware acceleration. That means they better handle transcoding without a discrete graphics card.
Price: Both have been around $150-250 new.
2. For Multiple 1080p Streams or Some 4K
If you have very ambitious plans, like supporting 3–5 users at once or transcoding some 4K content, you’ll need more CPU power.
- Ryzen 7 3700X (8 cores no integrated graphics)
- Ryzen 9 3900X 12-core (no integrated graphics)
These CPUs are lacking integrated graphics. You need a dedicated GPU for proper Plex transcoding.
Recommended GPU: NVIDIA Quadro P2000 or equivalent. It’s also popular for Plex, as it does several hardware-accelerated streams well.
- CPU price-performance range: $250–$400+ (USD)
- GPU price range: $250 to $400 USD+
3. For Heavy 4K Transcoding
If you’re serious about 4K HDR streaming to multiple devices, you need even more muscle.
- Ryzen 7 8845HS: AMD’s newer CPU for laptops and small builds.
This CPU has been shown to handle high-bitrate 4K transcoding really well. It’s energy-efficient and good for small form-factor builds or NAS units.
Price varies depending on laptop or small PC configuration.
Example- AMD Ryzen 7 8845HS Specs
What Is Hardware Acceleration?
Hardware acceleration means using the GPU (integrated or dedicated) to help the CPU with transcoding.
- Faster transcoding
- Lower power use
- Handles more streams at once
Most Plex users enable this in Plex settings if their CPU or GPU supports it.
- Ryzen 5600G and 5700G use their built-in Vega graphics.
- 3700X and 3900X need a dedicated GPU like Quadro P2000.
How Much Power Do You Need? (PassMark Rule)

Plex has a simple rule of thumb:
- 2000 PassMark points per 1080p stream
If you want to transcode 3 x 1080p streams, you’d want at least 6000 in PassMark CPU score.
Examples:
- Ryzen 5 5600G ≈ 19,000 PassMark (good for ~9–10 1080p streams if not doing 4K)
- Ryzen 7 3700X ≈ 23,000 PassMark
- Ryzen 9 3900X ≈ 32,000+ PassMark
You can check updated scores here: PassMark CPU Benchmarks
Don’t Forget the Motherboard and RAM
Your CPU choice also means you need a compatible motherboard (AM4 socket for most Ryzen options).
- Make sure it supports the CPU you choose.
- At least 8GB RAM for small libraries.
- 16GB or more for larger libraries and many streams.
Other Things to Think About
- Storage – Fast SSD for metadata and OS, large HDDs for media.
- Network – Gigabit Ethernet helps with smooth streaming.
- Operating System – Plex works on Windows, Linux, macOS. Choose one you’re comfortable with.
Budget Tips
If you want to keep costs low:
- Go with Ryzen 5 5600G: strong integrated graphics, no need for separate GPU.
- Buy used parts: Ryzen 3000-series CPUs are often cheaper secondhand.
- Focus on hardware acceleration: Even older GPUs can help with transcoding.
Summary
- Few 1080p streams? Ryzen 5 5600G or 5700G: It is cheap, easy, and no extra GPU is needed.
- More users or 4K? Ryzen 7 3700X or 3900X + NVIDIA Quadro P2000.
- Top 4K performance? Ryzen 7 8845HS for compact builds.
Always enable hardware acceleration.
Final Words
It shouldn’t have to be difficult to pick the right Ryzen CPU for your Plex server.
Think about how many people will watch at once and what types of videos you have. Budget your resources for immediate and future needs.
Even a low-end Ryzen CPU with an integrated graphics chip can do a lot. But if you want to stream 4K to several people, you will need more cores and, perhaps, even a dedicated GPU.
Plex is flexible. Construct the server that best fits your home and get the freedom to enjoy your library anywhere.