CPU OR GPU ?>

It honestly depends on what your primary workload is. So it's important to understand whether your main workload is CPU-intensive or GPU-intensive or both. For example, many people mistake Adobe Lightroom to be graphics intensive since it's a photo editing software, but it's actually CPU intensive. In this case if you get a crap CPU with high-end graphics card, it'll still crawl. Premier Pro on the other hand would be straight-forward graphics intensive.