So I ended up buying the Transcend 400x 16GB card from Newegg. It arrived today and I started testing it on an X40 2372-W96, which has a Dothan 1.4GHz LV and 1.5GB RAM. Using an Addonics dual CF adapter, I did a clean install of Windows XP SP3 (not with recovery disks) using the X4 base. It took just over 30 minutes, which was not bad, but definitely quite a bit slower than say, doing the same on a T42 with a Samsung 160GB. After a few minor tweaks (disabling windows system restore, drive indexing and page file), I immediately installed CrystalDiskMark and did 3 runs. Here's the first one:
And the rest are here:
http://tinypic.com/a/1me85/2
While the numbers look pretty good, at least when compared to the CF cards sjthinkpader and others have tested, I have to say I am a bit disappointed. Comparing this to a Kingston Ultimate 266x 8GB card that I have on another X40 that I have been using for just over a year now, this Transcend card 'stutters' quite a lot more. I first thought maybe for some reason it was not running in UDMA-5, but that I checked and it was.
For comparison, here are the 3 runs from the Kingston Ultimate 266x 8GB:
http://tinypic.com/a/1me8j/2
The one thing I know is that this Transcend 400x card has MLC cells, as supposed to SLC in the 300x version. I have no idea what's in the Kingston Ultimate 266x since I can't seem to find this information on Kingston's website. I wouldn't be surprised though if the Kingston has SLC, simply from the higher write speeds when compared to the Transcend card. The other thing is, I don't have any drivers on this X40 right now (not even Intel Chipset), I will install everything later tonight or tomorrow and report back if there's any improvements.