VGA ram heatsink coolers

On top of the card? Like, on top the of the heatsink and fan (That is where the logo usually is)?
Or on top of the GPU? I seriously have no idea what you are trying to say.

With DVI and HDMI, both are digital signals so there really is no performance or quality difference. The only difference is that you can run sound through the HDMI.

I'm pretty sure he's having the same thought that I did. My 4830's RAM chips are double sided, so when I attached my Zalman HSF, I only had half the RAMsinks that I needed. But yes, you can put some on the other side of the board, just as long as it doesn't interfere with anything in the slot/space above it.

BTW, the link you posted is a deactivated item, but here are two more sets:

These are 9mm tall, so if there is a card above it, the sinks won't interfere with it:
http://www.newegg.com/Product/Product.aspx?Item=N82E16835708009

And these are 14mm tall (I have these, they're great), so use these if there is nothing above the card:
http://www.newegg.com/Product/Product.aspx?Item=N82E16835708008

Also, HDMI and DVI have the same pinouts for video, so there won't be a quality difference.

You're gonna have to lose that shroud.

mousemonkey is correct. The shroud is made of plastic, and doesn't carry any heat. The metal (usually aluminum on bigger cards like that) under the shroud is carrying the heat over the card and out of the case. Losing the shroud will possibly make it hotter while using that heatsink as hot air won't be flowing out the back.

If you're looking to up your cooling capacity, I'd suggest an aftermarket cooler ( I don't really know of any offhand that are for the 295) or water cooling.