Issue #767: Add AMD R5 320.

Author: geerlingguy

_cards_gpu/amd-r5-320-2gb.md

@@ -0,0 +1,20 @@
+---
+layout: card
+title: "AMD R5 230 2GB"
+picture: "/images/gpu-amd-r5-230.jpeg"
+functionality_cm4: "Partial"
+functionality_pi5: "Full"
+driver_required: "Yes"
+github_issue: "https://github.com/geerlingguy/raspberry-pi-pcie-devices/issues/767"
+buy_link: https://amzn.to/42OUhTU
+videos: []
+---
+This AMD R5 320 has 2GB of VRAM, uses the Caicos GPU ("Southern Islands"), and was launched in 2014. This card requires a PCIe x16 slot and draws power from the card slot directly.
+
+## Raspberry Pi 5
+
+I was able to get the card working by recompiling the Pi OS kernel with the `radeon` driver, and using yanghaku's 15 line DRM patch to fix some memory consistency bugs.
+
+I also had to switch the graphical environment to X11 instead of labwc using `raspi-config`.
+
+See the linked GitHub issue for more details.