• OPENGL_VERSION: 3.3.11653 Compatibility Profile Context
• GLSL_VERSION: 3.30

Note that the release date of OpenGL 3.3 was March 11, 2010.

1. void setup() {
2.   size(300, 300, P3D);
3.   println("OPENGL_VERSION: " + PGraphicsOpenGL.OPENGL_VERSION);
4.   println("GLSL_VERSION: " + PGraphicsOpenGL.GLSL_VERSION);
5.   exit();
6. }

So it seems Processing is currently using version 3.3 of both OpenGL and GLSL.

Hower there may be some good news. The graphics card I tested this with is from the ATI Radeon HD 4800 Series, which is even older than the 5000 Series you intend to buy from. When you look at the AMD/ATI website it states the specs for both of these series as OpenGL 3.2 support. However I suppose those were the original specs at the time of release. I did have to update drivers when switching to Processing 2.0. However now it is running relatively fine for me on this computer.