Say plainly that CPU-only is too slow for 27B models

README.md

@@ -13,8 +13,8 @@ tags:
 This installs **llama.cpp**, the free program that runs AI models on your own computer, with
 Entrit's **d2 kernel** added. Our d2 models store each weight as one of 9 levels, and stock
 llama.cpp can't read that format. The install script downloads llama.cpp, adds our kernel, and
-builds it for your graphics card. With no graphics card, it builds a slower version that runs on
-the processor.
+builds it for your graphics card. With no graphics card it still builds and runs, but on the
+processor alone a 27B model takes minutes per word, so plan on a graphics card for these models.
 
 You'll type a few commands into a terminal. You don't need to know how to program.
 
@@ -64,7 +64,7 @@ Then add the part for your graphics card:
 |---|---|
 | NVIDIA | Install the CUDA Toolkit from https://developer.nvidia.com/cuda-downloads |
 | AMD or Intel | `sudo apt install -y libvulkan-dev glslc` |
-| None | nothing; you'll get the processor version |
+| None | nothing; the processor version works but is far too slow for a 27B model |
 
 ## Step 3: Download and install