I have a copy of Adobe Premiere Pro CS 4 that has trouble playing back 1080p HD H.264 when I'm editing it on my C2Q Q8200 / 8GB RAM machine. It's really hard to work with video when you can't even play it back without it lagging and jumping.
Anyway, I want to upgrade to a Core i5 2500k or i7 2600k to add more decoding power so that playback is in real-time. (I don't really care which can encode the finished video faster). However, only the i7 2600k supports Hyper-threading.
So my question is, does the hyper-threading on the 2600k make it a much better choice than the 2500k for video editing? Can Adobe CS 4 (or CS 5.5 if I upgrade) even use the hyper-threading to improve playback - or would it just slow things down?