![[Intel 778 product]](intel_778_1.jpg)
This document last updated Mar 30 2026.
https://www.ebay.com/itm/297922249070 RARE Vintage Intel Computer Processing Unit Terminal System CPU Mainframe MDX778 wovenwaves (806) US $850.00or Best Offer Local pickup only from Nampa, Idaho, United States 83686 This listing was ended by the seller on Fri, Jan 23 [2026] at 5:03 AM because the item is no longer available.
From the seller: I can't find any information on this circa 1983 Intel computer "mini computer" besides this reddit post of this listing: https://www.reddit.com/r/vintagecomputing/comments/1q8mmoa/never_seen_one_of_these_before_intel_mainframe/ It appears mostly complete and well intact with a hard drive, floppy drive, power supply, and processor boards. This unit is pretty heavy and measures about 23" wide, 30" deep, and 31" tall with the caster wheels. This is a perfect museum specimen, or an amazing collectors piece. The front and rear panels pop/snap off and on. Please see pictures for details and thank you for looking. I cannot provide shipping so you must arrange pickup yourself. I may be able to deliver personally depending on distance and compensation.
intel_778_1.jpg front view
intel_778_2.jpg back view
intel_778_3.jpg closer back view
- cabinet is divided vertically, left "half" 1/3, right "half 2/3"
- nameplate on bottom left half says "MDX 778 s/n 815 120V 12Amps"
- nameplate on bottom right half says "MDX 1003 s/n 796 120V 12Amps
intel_778_4.jpg back with covers removed
- left half closed, with panels and tags.
- right half enclosed with fan, many connector positions, five DB connectors + 1
- looks like back of some card-cage boards mounted long-edge vertical
- above card cage is smaller apparatus, likely floppy drives, probably 8-inch
intel_778_5.jpg left half MLC record, MDX 778 s/n 815
intel_778_6.jpg left configuration list of 778 features
- features include power, 35MB and 64MB drive cables, 1220V and 35MB drive features indicated
intel_778_7.jpg interior, back of bus board and wires
intel_778_8.jpg interior, 6 Multibus cards, top edge in cage
intel_778_9.jpg interior, flat cable PC board
intel_778_10.jpg interior, PRIAM 3450-10 drive, stamped 9/83"
intel_778_11.jpg Intel Multibus card "communications processor"
- 8085 board with 16 2114 RAMs, two ROMs 2732, D8202A chip, other 8-bit Intel controllers
intel_778_12.jpgextended Multibus card, Intel
_ "slave processor" likely 80186, 80286?
intel_778_13.jpg detail of "slave processing unit"
- PWA and rev numbers marked out with black marker, suggests customized boards?
intel_778_14.jpg power supply voltage details
By visual inspection. from front, right cabinet is power supply and hard drive labeled MDX 778. From front, left cabinet is MDX 1008 Multibus (I) based system for drive control and communications. Multibus boards on the 1008 side, include a "master" 8085 based controller, with a "slave processing" controller likely 80186 or 80286 (PLCC so no identifying information). Date on Priam 3450-10 drive (30-35 Mbyte) is Sept 1983; on the MDX 778 side. Controller cards on MDX 1008 side may be customized by Intel for this particular product. serial numbers on cabinets are 796 and 815 and inferred by low number suggests these may be semi-custom Intel products. Conclusion: this is a file server produced by Intel from early-80's Multibus cards, for 35 or 70 Megabyte hard drives of the era. - Herb Johnson Mar 30 2026
3mo ago [current date Mar 30 2026] Glum_Anteater1250 [thread title:] Never seen one of these before.. Intel Mainframe Currently looking to move from its current home in Nanpa Idaho... (where ever that is) You can put it next to that Sun system posted on here a few days ago.... thatguychad 3mo ago I saw this being picked up yesterday. And it was actually in Boise. I was watching the NeXT stuff they had, but it went over what I was willing to pay. I wonder if the person that bought the slab was disappointed. The description made it sound like it was a color slab and it is most-definitely not. It’s a mono, non-turbo Digoxigenin-d 3mo ago Since the ebay auction is now pointing at this post, editing with even more information: I managed to track it down to this recent auction: https://bid.musickauction.com/lot-details/index/catalog/771/lot/420639/Intel-MDX-1003-Monitor-All-In-One-Computer-System MERIDIAN - OFF SITE!! THE REUSEUM COLLECTION!! MUSEUM QUALITY ELECTRONICS, APPLE COMPUTERS, GAMING SYSTEMS, VINTAGE MILITARY.. https://bid.musickauction.com/auctions/catalog/id/771 [this item] Intel MDX-1003 Monitor All In One Computer System [1003 - Lot closed - Winning bid:$235 (44 bids)] [terminal TRM-1 sold for $245] [https://www.reuseum.com/ Repurposing yesterday’s technology to power tomorrow’s innovators through sustainable STEM education and responsible recycling.] The Reuseum is a local tech shop/ maker space /etc, that recently dumped a lot of stuff from their collection Ebay link with more pictures here https://www.ebay.com/itm/297922249070 From what I can determine it's a rather early Intel development kit, for software and possibly hardware development using their early processors and microcontrollers. There's a good chance it has both a microprocessor and a microcontroller with support for jumping between them, as well as adding more on support cards. Interesting that the chassis exterior says MDX-1003, while interior says MDX-778. It probably has a story of being in place upgraded, but likely all lost considering the Reuseum dumped it from their collection I could find a little on a similar system, the (i)MDX 430 series. Sales brochure here https://mark-ogden.uk/files/intel/publications/230625-003%20iMDX%20430%2C431%2C440%2C441%20Intellec%20Series%20IV%20Microcomputer%20Development%20System-May84.pdf It seems these systems are listed in collections under different names, such as Intellec Series IV which complicates the search for info Whether or not it's a mainframe very much depends on the industry it was used in. It's quite literally a 'main frame' with replaceable / upgradeable component cards. Likely uses Intel Multibus, used in industrial mainframes controlling trains but also servers like the Sun-2 series justeUnMec 3mo ago The ebay seller is linking to this reddit post in their listing. The listing started at $10k, has dropped to $8k, and the seller just sent me an offer for $3,800! While an interesting historical object, I really am not sure it's even remotely worth this, especially after paying $235. Good luck to them, price discovery on an unusual piece of equipment like this is tricky, but I hope any potential buyer does their due diligence and understands what they are buying more than this seller who is leaching off our research to try to make a ridiculous profit! xampl9 3mo ago They sold the iPSC in the 80’s (Intel Personal Supercomputer). I wrote some code for one in college. It had thirty-two 80286 processors connected in a hypercube configuration and another processor used for management. Wikipedia says they came with math coprocessors but I don’t think ours had them (probably why it got donated). https://en.wikipedia.org/wiki/Intel_iPSC Zaniak88 2mo ago This was definitely bought in the reuseum auction recently, they get a lot of government retired electronics, and I’m pretty sure a lot are shipped up from Area 51 since they had a big Area 51 sign on their door. I’m assuming this was probably a weird one-off kinda thing just for government use that has since been wiped and resold. The guy is selling it on [Amazon?] marketplace (or attempting to) for $500 lol
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