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Cray J90 Supercomputer Modules

1 - 400 Mhz SE Processor CPU Module

2 Memory Modules


For sale in this auction are one Cray J90 CPU and two Cray J90 Memory Modules.  The Cray J90 CPU Module is the middle module in the picture to the right.  Each Memory Module is 1GigaWord.

The J90 series is based on CMOS technology which has a low power consumption (all J90s are air cooled) and low production costs. The machine is binary compatible with the high-end systems. It has one multiply and add vector pipe set per CPU at a clock cycle of 10 ns which results in a theoretical peak performance of 200 Mflop/s. Furthermore, a cache has been added to speed up scalar processing.

Cray J90 Computers are 16 processor Y-MP compatible systems. The vector based CPU is rated at 200 MegaFLOPS, yielding combined 3200 MegaFLOPS computation speed.

Cray uses units such as clicks, words, and megawords to measure memory size. For example, 1GB (gigabyte) is referred to in Cray terminology as 128 MW (megawords), and 4096 bytes as 1 block, or 1 click, or 1 sector.

Cray J90 System Specifications:

Shared Memory Multi Vector Processor
OS: UNICOS (Cray Unix Variant)
Compilers: Fortran, C, C++, Pascal, ADA

System parameters:
Clock cycle 10 ns

Theory Peak Performance:
Per Processor: 200 Mflop/s
Maximal: 6.4 Gflop/s
Main Memory: <= 4 GB

Memory Bandwidth:
Single Proc. Bandwidth: 1.6 GB/s
Number Of Possible Processors: 4 to 32

Equipment Notes:

These J90 memory and processor modules were pulled from a working system and are in excellent physical and electrical condition.

To my knowledge, these Cray Components have never been listed on EBay before and may never again.  Jump on this opportunity while you can!

There is a complete system listed on Ebay right now -


There is only one Processor in the processor module but it is the 400 Mhz SE processor which is very rare.

Due to the export restriction concerns, this item is only available to customers inside the United States.  Please, no foreign bidders.


This item is sold with a 3 Day Satisfaction Guarantee.  So bid with confidence.  As our many customers will attest, we will do our very best to resolve any customer problems. But our official policy is:

This item comes with a 3 day right of return policy.
All returns must be made within 3 days of receipt.
All warranties are void if the calibration / warranty seals are broken.
Equipment must be shipped correctly and returned with all accessories.
Customer is responsible for all shipping charges on returns.
Foreign Buyers please be aware: We offer no warranty or returns on items shipped outside the USA

Payment, Shipping & Bidding:

Buyer will pay $100.00 packing and shipping & Insurance in the continental United States. Payments accepted are Paypal, cashiers checks and money orders only.  No international buyers unless Paypal verified.  Please feel free to contact us if you need other arrangements.  You may use your own shipping account if available.

We will make every effort to ship within 24 hours of receipt of payment. We ship with FedEx & UPS only. We will be glad to ship with other carriers using the purchasers shipping account. Please contact us to make any special shipping arrangements. For shipping rate research, our shipping address is Boulder, CO USA ---- Zip Code is 80305.

Many of our auctions have a set packaging and shipping fee.  This set fee makes the transaction easier and allows the purchaser to send payment at once without having to wait for a shipping total.  This is our best guess on an unpackaged item.  Please consider the total with shipping when you are bidding.

Bidders - with no feedback or less then 80% positive feedback must contact us through the eBay email system before placing a bid. We will reply through the same system, documenting that you have been approved to bid. If you do not follow these procedures, your bid will be cancelled.  All other bidders, bid with confidence.


About Us:

Ascent Concepts and Technologies is a Research & Development Lab. As a service to the companies and institutions we work with, we broker their excess equipment & act as application specialists on their new equipment needs. We are now offering quality used equipment to the public with the same level of professionalism and service.

Please feel free to email at thomasknox@ascentconcepts (no spam) .com or call Thomas @ 1-303-554-0307 with any Technical questions. Please feel free to email at waltwhite@ascentconcepts (no spam) .com or call Walt @ 1-720-276-8288 with any Shipping or Logistical questions. We make every effort to evaluate and guarantee our equipment. Although we do not provide NIST traceable calibration, we do have extensive in house calibration equipment and make every effort to test and verify performance on equipment we sell. However we do not warranty any items shipped outside the USA.





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The equipment shown is a representation only.  We often have multiple units in stock so please email us with your needs.  We have a large inventory and can usually find any test and measurement item in a short time frame.------Inquires