UDMA support in SD card ide adapters

All,

I was wondering if anyone had seen UDMA5 or better support in a 44 pin ide adapter for SDHC. I purchased all of the adapters I could find on ebay. My findings were fairly interesting. You can usually separate the adapters by the look of the card.

SDHC is inexpensive and can be quite fast. I tried a Sandisk Extreme Pro which claims 95MB/s.

The best so far has printed on it CF2IDE25SD (Green).

If you peel the sticker of the chipset you can read what chips they use. The green board uses a phison PS3002T chip which is only capable of UDMA2 or 33mb/s
http://www.phison.com/upload/editorfiles/2007.7.19_18.4.19_4024.pdf

The black board is the cheapest and most available. It uses the FC1306T chipset which is unclear of it's speed, but certainly is much slower than the phison based adapter.
http://www.lcktc.com/imges/download/FC1306T_Datasheet_040806.pdf


Also interesting was the SATA adapter for SDHC. It uses the slower FC1306T chip. This card caused all computer in which I tried it to fail to boot with the drive attached.

I suppose the compact flash reigns king on cheap DIY SSD's. The major benefit here is that it's a one to one pin mapping to PATA. There is no controller necessary. Also the compact flash card itself controls the UDMA mode. I picked some up at fry's.com on black friday. $15 for 16gb of 400x. I tested mine which peaked all the way up to the UDMA5 limit of 100mb/s. 400x equates to 60mb/s if you use the 150kb/s x 400 calculation.