MikeJ - it's true, sort of. If you're spending $4000 on a professional graphics card, you expect it to perform better than a $150 consumer card, and for most applications that is simply not the case. Becase that $4000 professional card has exactly the same GPU as that $150 consumer card, running at the same clock speed.
Some consumer graphics card manufacturers overclock the GPU and memory by default. This is never the case with professional cards.

Why are those professional cards so bloody expensive? Part of it is that the chips installed on those cards have been rigorously tested, while consumer card chips go through a quickie test or not test at all before theyr'e shipped. Another part of it is the specialized high end 3D libraries - software for a small market, which inevitably means high prices. And - but that only accounts for a small increase in price - most professional graphics card have more onboard memory than their consumer counterparts.

The pen is mightier than the sword. But if you literally want to have some impact, use a typewriter

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