Dell "256MB NVIDIA GeForce 8600M GT" actually 128MB?

Hello everyone.
This is my first post but I've read a lot of good information on here lately. I'm planning on buying a Dell xps m1530 a few months from now and have been trying to do some reading on them. I just came across this article at this url:
http://www.decheung.com/2007/03/how...y-dell-ati-hypermemory-nvidia-turbocache.html
While I'm not looking at that particular card, I am looking at the 256MB NVIDIA® GeForce® 8600M GT video card. I was wanting to make sure this one has 256MB of dedicated (discrete?) video memory and not 128MB.

Any Info is greatly appreciated.

Also, how large of a difference would the 'Turbo Cache' make compared to fully dedicated?

 

I am certain the 8600M GT only comes in 256mb or 512mb.

Make certain you get GDDR3 memory and not the slower GDDR2, a lot of 512mb versions come with GDDR2.

http://www.notebookcheck.net/Comparison-of-Grafic-Cards.130.0.html

 

The XPS has 256MB of GDDR3

The only 128MB one is one of the macbookpro. The 14'' T61p also comes with a 64bit bus rather than 128bits

 

TurboCache/Hyper Memory is dynamically allocated RAM that is borrowed by the GPU for use as VRAM. Its performance is on par with integrated graphics memory performance; it sucks.

Call Dell to get the answer straight from the horse's mouth.

 

Well, Apple offered a 128MB 8600M GT in their base level MacBook Pro for almost a year, actually. However, I don't think Dell has ever sold any flavor of 8600M GT but the 256MB DDR2 (Inspiron/Vostro 15.4") or 256MB GDDR3 (XPS 15.4") varieties.