IBM 7302

Binary models

• 16,384 - 72-bit words w/ 2.18μs cycle time
• *The IBM 7030 used this as 16,384 - 64-bit words and an 8-bit ECC. Interleaving of units could reduce effective cycle time to 1.09μs or 0.545μs.
• *The IBM 7090 used this as 32,768 - 36-bit words.
• *The IBM 7094 used this as 32,768 - 36-bit words. Instructions were fetched in 72-bit word pairs, reducing effective instruction fetch time to 1.0μs.
• 8,192 - 72-bit words w/ 2.18μs cycle time
• *The IBM 7030 used this as 8,192 - 64-bit words and an 8-bit ECC. Interleaving of units could reduce effective cycle time to 1.09μs or 0.545μs.
• 32,768 - 36-bit words w/ 1.4μs cycle time and Even/Odd word overlapped access.
• *The IBM 7094 II used this as 32,768 - 36-bit words. Because the Even 36-bit word and Odd 36-bit word were independent in this model their accesses could overlap, which could reduce effective cycle time to 0.7μs.

  Decimal models

• 160,000 - 7-bit characters w/ 2.18μs cycle time
• *The IBM 7080 used this as 160,000 - 7-bit characters; CBA8421.
• 80,000 - 7-bit characters w/ 2.18μs cycle time
• *The IBM 7080 used this as 80,000 - 7-bit characters; CBA8421.