Below are sections from two chat sessions at large PC sellers web sites. I asked if they have a computer with the specs listing OpenGL 4 or higher. Both companies said no. They basically do not have access to a OpenGL version number in the specs. So how do I buy a computer that has OpenGL 4 or higher?

--Chat Session Company #1--
‎2‎:‎57‎:‎42‎ ‎PM Agent: xxxxxx C
Upon checking, I am afraid we don't have a systemw ith open gl 4 but you may check it with our Business department
‎2‎:‎58‎:‎11‎ ‎PM Customer xxxxxxxx

--Chat Session Company #2--
xxxx: Thank you for waiting.
xxxx: However, I do apologize for we do not have a model that has the OpenGL supported or available.
You: OK