March 9, 2007
How I lost 128MB of Video Card Memory: Dell, ATI HyperMemory, nVidia TurboCache
Quick! What’s the difference between this video card…

…and this video card?

Did you guess that the first video card had 128 MB more memory than the second?
Bzz. Nope. They’re the same video card in the same Dell machine! Wait… maybe Vista ate the 128 MB of memory? Nope! That’s not it either!
Here’s another question – how much memory do you think the video card in this screenshot from Dell’s website – the one labeled “256MB nVidia Geforce 7300LE TurboCache” – has?

Did you guess 256 MB? Well, if so – you made the same mistake I did. Except I made it twice.
Here, let me explain to you how much memory this 256 MB video card has. We’ll use Dell’s help page, linked off of Help Me Choose:

That still says that it’s a “256MB x16 nVidia GeForce 7300 LE TurboCache” card. Let’s scroll down a little…

Nothing there… let’s scroll down some more….

Ah hah! There it is!
Don’t see it?
Here it is called out:

Of course! The “256MB x16 nVidia GeForce 7300 LE TurboCache” entry had a footnote which explains how much memory there’s actually on the video card – which is 128MB!
It turns out that ATI has HyperMemory, and nVidia has TurboCache. Here’s how ATI describes this technology:
ATI develops HyperMemory technology to reduce PC costs
Yep, I think that says it all. So the Dell I bought in July, thinking it had a 256 MB ATI X600 HyperMemory video card so that it would be great for Vista, actually only has 128 MB onboard (apparently the driver tricks XP), and the Dell I just instructed my parents to buy so that they could enjoy Vista Ultimate has a 256 MB nVidia TurboCache video card, which actually only has 128 MB onboard.
I’m not sure if I should be angry at Dell or not. After all, I guess I should’ve known to follow all the footnotes and do research on what these buzzwords really meant. As a customer, I should’ve known better and have been more wary and distrustful of the marketing and help page.
Caveat emptor indeed.




