• Please review our updated Terms and Rules here
  • From now on we will require that a prefix is set for any items in the sales area. We have created regions and locations for this. We also require that you select a delivery option before posting your listing. This will hopefully help us streamline the things that get listed for sales here and help local people better advertise their items, especially for local only sales. New sales rules are also coming, so stay tuned.

WTB: Intel or IDT TurboCache 485


New Member
Oct 23, 2004
I am looking for this rather obscure external L2 cache module. This board was manufactured by Intel and IDT and used over about a two year period on a variety of 486 systems using a 33Mhz bus in the early nineties. Machines that I know of using this item:

Multibest Industrial MB4861DX
Epson ExpressStation 486
Packard Bell 22/23 motherboard
NCR 3350 and 3434
Reply 80 Planar
Intel L486
DECpc 433
Morse Technologies KP 486EDX
Zenith ZDS
Zeos 486/33
IThe board contains a total of 4 rows of 28 pins and looks like this:


There are 64K and 128K versions and here are some of the part numbers:
I82485MA-33 (64K)
I82485MB-33 (128K)

I would be happy to pay a reasonable amount for this card to finish off my project:

NCR System 3300 Model 3350 Microchannel Desktop

486DX2 upgraded to Pentium 83Mhz (POP5V83)
16MB upgraded to 192MB RAM
Windows 95 upgraded to Windows NT 4.0 Server (looking for MP-RAS)
Conner 540S upgraded to Quantum SE 2.1 SCSI Hard Drive
3Com529TP Ethernet

Also, I have a complete Apple IIGS system (but w/o any fancy network, storage or accelerator cards) with drives, RGB monitor and dot matrix printer free to a good home (I need to have shipping & handling costs covered that I estimate to be around $40). Every thing works fine except the printer that needs a cartridge. Plus a bunch of games and school software. Hurry before I get around to listing it on eBay!


Did you find anything out there??
I am a buyer and I am also searching.
Have a few still sealed Intel turbocache modules

Have a few still sealed Intel turbocache modules

Send me a reply for more details if needed.
I have a case of sealed modules. It's the same carrier as shown in your
photos. This version has the 80485 cache controller and micron cache
I know. its old, but i have to give a chance. Do you still have these for sale? Im interesting about this module.