Yes, it is high-speed card, the samsung page says it too, it is 8 bit, 52MHz, mmc 4.3 compliant eMMC, in theory this means 52MB/s but it is only the speed of the interface, not speed of NAND controller inside.

what is the problem? I put a vfat on a 8GB usbstick and put a 6GB matroshka movie file onto it... well preserving rights doesnt work but hell format the internal as ext3 and extend your windows to make use of it! I do have dual boot windows and linux and none of my partitions are fat, a transfer partition with music and movies is mounted with windows startup (just one to keep the overall journal mess to limits I can work with), as long as windows doesnt freeze I have no problem to recover the journal while booting into linux

I read somewhere that the n900 was already tested for 32GB cards and 64GB cards successfully but having class 2 cards doesnt work for me... 16GB class 6 will be my choice 14GB ext3 2GB vfat (just in case), the 29GB left on the device will be formated to ext3 every transfer larger than 2GB to a windows machine (which doesnt want to install ext3 programs) has to go wifi and I dont care...

Must be "class 6" level, since if lower, some of the current users would have caught this.

Can apps be run off the 32GB or SD cards? Found out that my wife's new Moto Droid can only install apps to the 256 MB of internal storage. The 16GB card in the Droid is only for storing images, mp3's, video, etc..etc. Can't run apps from it that I'm aware. Just wondered if the N900 was the same?

Officially? No
Unoffically? Yes with a bit of work

But just to clarify for any shell-shocked Android refugees: Maemo doesn't have the bizarrely cramped app space that Android seems to be unable to overcome in even rev. 2 iterations. You get over 1 GB of storage completely suitable for apps, and as mentioned, you can repartition in the unlikely event that is not enough.

No, the problem is that there aren't larger cards at the moment. I think they are all SDXC cards, so they really shouldn't be limited at all (well, file system limits might happen).

LM,

Out of the box, the OS is allocating 2gb of the 32gb for applications if needed. Not sure if this is a predefined threshold or if the OS is already allocating 2gb.

We should have about 28gb of free space, with all things considered. I guess not long to find out.

hdparm test

mmcblk0

Timing cached reads: 338mb in 2.01 seconds = 168.12 mb/sec
Timing buffered disk reads: 64mb in 3.05 seconds = 20.99 mb/sec

ram0

Timing cached reads: 306mb in 2.00 seconds = 152.95 mb/sec
Timing buffered disk reads: 16mb in 0.39 seconds = 41.18 mb/sec

ubi0
Error

I still can't understand why the G1 (and Android in general) forces users to use the built-in memory, which in most cases is tiny. Just about every custom rom fixes this and lets you use the SD.