amd

After years of work among a bunch of people in the Pi community (special callout to Coreforge!), we finally have multiple generations of AMD graphics cards working on the Raspberry Pi 5.

We recently got Polaris-era GPUs working (like the RX460), but in the past month we've gotten 6000 and 7000-series GPUs up and running. And many parts of the driver work at full performance—well, as much as can be had on the Raspberry Pi's single PCIe Gen 3 lane (8 GT/sec)!

I've been testing tons of modern AAA games, like Doom Eternal and Crysis Remastered, and can get 10-15 fps at 4K with Ray Tracing on, or 15-20 fps at 4K. Dropping down to 1080p is not enough to overcome the Pi's CPU bottleneck—only at resolutions under 720p does the Pi's CPU and the single PCIe lane not seem to get in the way quite as much.

After I saw Pineboards 4K Pi 5 external GPU gaming demo at Maker Faire Hanover, I decided it was time to set up my GPU test rig and see how the Pi OS amdgpu Linux kernel patch is going.

I tested it out on a livestream over the weekend, but I thought I'd document the current state of the patch, how to apply it, and what else is left to do to get full external GPU support on the Raspberry Pi.

I also have a full video up with more demonstrations of the GPU in use, you can watch it below:

My journey testing various graphics cards on the Raspberry Pi began soon after the Compute Module 4 was launched in 2020. Since then I've tested almost 20 graphics cards—with a little success.

But there were two roadblocks to getting drivers for even older AMD radeon drivers working well:

It's risky business fighting Intel, AMD, and Arm, and that's exactly what Star Five is trying to do with this:

The chip on this new single board computer could be the start of a computing revolution—at least that's what some people think!

The VisionFive 2 has a JH7110 SoC on it, sporting a new Instruction Set Architecture (ISA) called RISC-V.

tl;dr: Use an old-fashioned USB 2.0 flash drive, format it FAT32, download the firmware, make sure it's named correctly, and use the motherboard's 'BIOS Flashback' option after powering off the computer.

This past week, I devoted far too much time to the task of updating my brand new motherboard's BIOS.

It started with a combo deal from Micro Center: a ASUS ROG Strix B650E-F Gaming WiFi motherboard, a Ryzen 9 7900x CPU, and a G.Skill Flare X5 Series 32GB DDR5-6000 memory kit, all for $599. Quite a beefy upgrade for the main PC I use to compile code and do random Linux-y tasks.

I'm working on a project—a very dumb project, mind you—and I was trying to acquire the two current-gen flagship GPUs: an Nvidia RTX 4090, and an AMD Radeon RX 7900 XTX.

In some weird stroke of luck (it has been difficult to find either in stock), I was able to get one of each this week.

(lol at the size difference...)

Besides exorbitant price gouging, Nvidia's ownership of the crown in terms of GPU performance remains in this generation, as the 4090 blows past any competing card so far. But AMD's 7900 XTX was poised to be the best value in terms of price, performance, and efficiency (at least compared to any Nvidia offering).

In October 2020, after Raspberry Pi introduced the Compute Module 4, I started out on a journey to get an external graphics card working on the Pi.

At the time, it'd been over a decade since the last time I'd built a PC, and I had a lot to learn about PCI Express, the state of graphics card drivers in Linux, and PCI Express support on various ARM SoCs.

Recently I wanted to see whether I could get glmark2 (an OpenGL 2.0 and ES 2.0 benchmark tool) to run on a Raspberry Pi with an external graphics card (see this thread).

But glmark2 isn't available in any Pi repositories, so you have to build it from source:

sudo apt install -y meson libjpeg-dev libdrm-dev libgbm-dev libudev-dev
git clone https://github.com/glmark2/glmark2.git
cd glmark2
meson setup build -Dflavors=drm-gl,drm-glesv2
ninja -C build
sudo ninja -C build install

I built this for drm only, so it can run fullscreen without any X/Wayland environment. To run the full suite:

glmark2-drm

Or you can run a specific benchmark like glmark2-drm -b jellyfish.

Last month, I built an all-AMD PC to try out Linux Gaming with Steam and Proton, and so I'd have a faster native Linux build machine for my various compilation tasks.

This month, Apple introduced the Mac Studio, and as a now full-time video producer, it was a no-brainer for me to upgrade from an M1 Mac mini.

My Mac Studio arrived Friday, and over the weekend, I spent some time benchmarking it against not only my M1 mini, but also my new AMD Ryzen 5 5600x PC build.

My Mac Studio's specs:

Last year, due to some extreme luck and help from a viewer, I picked up an AMD RX 6700 XT for MSRP (around $500).

My initial goal was to see if I could get the card working on a Raspberry Pi. Though my initial effort was fruitless, I've since hacked the driver to work through at least a few 'rings' of AMD's doorbell init process.