I think we need to put a few things in perspective.
Lets say right now, video card "A" plays a kickbutt game at 60fps (frames/sec), but video card "B" plays the same game at 80fps but costs 100 bucks more, which card are you going to get? Many hardcore-ists will say "g0 f0r v1de0 c4rd 'B' d00d!!111!!!". However... in reality, can you really tell the difference between 60 and 80fps? In reality, we can't even tell the difference after 30-40fps. Now, the same hardcore-ists will say "bu7 d00d!1! V1de0 c4rd 'B' w1|| l4s7 l0nger!!11!!". Yeah... ok, by how long? By the time video card "A" is obsolete, video card "B" will be obsolete soon after.
What I'm trying to say is, even if the 14% speed boost is true, the average user won't notice it. With current computer tech now, I would stick with an good overall chip and save my cash... because being able to process a video in 9 minutes, rather than 10 just isn't worth the extra dough. Unless of course, you only need to spend relatively small amount of money... then by all means go for it!
I think the only way you'll ever get some sort of agreement is if you actually tell us what you're thinking about getting (ie. computer brand/model/etc.) then we can give you suggestions to improve upon what you want.
Sorry if my above posting offended anyone, I didn't mean to attack anyone... just mocking some of those hardcore computer geeks I know out there
(sadly enough, I used to be one of them... I just didn't use "h4x0r")
-Richer