I.B.M.'s top-of-the-line computers, which are also its most profitable products, had strong sales performance that benefited the company's product mix for the quarter, she said.

There are other 20-MHz computers based on the 80386 chip (including I.B.M.'s top-of-the-line personal computer, the Model 80).

That is 2,000 times more data than top-of-the-line personal computers can currently store on their hard disks.

For top-of-the-line computers, the kind many people will consider leasing, the difference can easily top $1,000.

His own car, a top-of-the-line computer, and lots of babes chasing him.

I.B.M. said it was tripling the performance of its top-of-the-line personal computers used as high-speed data librarians.

NCR also introduced a top-of-the-line personal computer yesterday that will be priced between $9,995 and $16,995, including a model based on the Intel Corporation's i486 microprocessor.

The top-of-the-line computers completed I.B.M.'s enhancement in recent months of its entire product line, from personal computers to mainframes.

Artisoft executives say that Microsoft's new networking software will be slow to be accepted because it will require top-of-the-line computers rather than existing desktop machines.

I.B.M. said yesterday that it was tripling the performance of its top-of-the-line personal computers used as high-speed data librarians in office computer networks.