How can this be tested? I would say that the fastest way to get an answer is to make it easy for people with CF cards to check and report their results

You asked this before: CF and SD with larger ATA block transfer sizes

I have some kingston SSD devices that do 16 blocks per interrupt through a jmicron sata pata bridge.

download/file.php?id=231189&mode=view

download/file.php?id=231243&mode=view

Works well with PIO and UDMA. Doesn’t work with MWDMA for me, even though it reports it as a viable mode.

Dear all,

This is when you noticed you get old. Sorry for the double post and thanks for the answer and the hint.
The answer shows one way to identify it. Hdat2, MHDD would be another way I’m aware of or via XTIDE large bios routine.

This thread can be closed / deleted

I couldn’t find any datasheet for that ssdnow model but for other kingstons: no remarks about that topic in the specs.
So you seem to be lucky here.

Marco wrote on 2025-12-03, 12:30:

I couldn’t find any datasheet for that ssdnow model but for other kingstons: no remarks about that topic in the specs.
So you seem to be lucky here.

The KINGSTON SNS4151S316GD was likely an OEM product for chrome books and those Windows 10s laptops that didn't catch on back in the 201x's. Probably was never available for retail. Someone sold me a bag of them for cheap back in the covid lock down days. I couldn't pass that up. I'll pull the sticker off one and get you the controller and flash info tonight.

It has a PHISON PS3109-S9 controller

https://docs.rs-online.com/3c4b/0900766b816bb741.pdf

Great thanks

All,

On top of the recommendations here I could find one SSD to support 16 block transfer: intel 520.

Please find reference here: https://www.thomas-krenn.com/de/wiki/Intel_520_Series_SSDs

Thats a LSI SandForce SF-2281 Controller

https://www.storagereview.com/review/intel-ssd-520-review

He has other ssd’s listed in his site with multi sector transfer > 1

https://www.thomas-krenn.com/de/wiki/Intel_320_Series_SSDs

https://www.thomas-krenn.com/de/wiki/Intel_E_ … 00S_Series_SSDs

Thanks for the update. I referred to his smartctrl screenshot on that particular 520 ssd. Seems like a proof. I will double check this set up as seen as I have my iord16 pcb in place.

Intel seems to have „improved“ their firmware with that controller in contrary to other vendors

Found another. The Liteon LSS-16L6G-HP reports that it can also do 16 sectors per interrupt but for some reason was only doing 8 under MR Bios.

Thanks again.
Are you aware of any CF Card with this Feature?

Regards

Marco wrote on Yesterday, 21:00:

Thanks again.
Are you aware of any CF Card with this Feature?

Regards

I have some INNODISK iCF 4000 Industrial 4GB CF cards that support a max block size of 2.

I don't recommend them. They are not very good performers and the compatibility with retro computers ranges between "very fussy" to "don't bother".

I have exactly the same and understand your opinion