🚀 go-pugleaf

In article <3181e7f0.38799797@news.demon.co.uk>, Hemal Popat
<hemal@popath.demon.co.uk> writes

>On Sat, 27 Apr 1996 00:19:07 +0100, John Beardmore
><wookie@wookie.demon.co.uk> wrote:
>
>> In article <317bc4ca.802017@news.demon.co.uk>, Hemal Popat
>> <hemal@popath.demon.co.uk> writes
>> 
>> >So the quickest is EDORam+PB Cache, then things get a bit  hazy.
>> 
>> No. The quickest is probably EDRAM. This is about 10% more expensive and
>> much faster. A kind of cache in the simm technology with access times
>> down to less than 15 ns for consecutive accesses.
>> 
>> This is not exactly main stream, but you can buy these systems off the
>> shelf.
>
>Where?

Armari Systems. Talk to Dan. 0181 810 7441.


>There's plenty of adverts for say a 8Meg (non-parity) 70ns DRAM for ~ 90UKP
>or 60ns EDORAM for ~ 105UKP, but I haven't seen any EDRAM modules
>advertised.

You won't. Not a mass market item yet. They tend to go into high end
embedded systems like fast laser printers and mainframes. The chips used
to be fabricated but Nipon Steel, now by IBM I believe.


>Are special chipsets required on motherboards to support faster ram
>technologies?

The 486/100 EDRAM system I had last year could beat low end Pentium
systems with the same amount of RAM and other resources despite having a
memory bus half the width.

The chipset on that was a pretty standard one but I don't remember which
right now. The machine did have special fast hot PALs which ran the
memory interface at 0WS; thats no wait states at all, not no wait states
added to some number the BIOS fails to mention.

To get significantly faster, I had to go to P/133. Pentium systems with
EDRAM are now shipping though; I don't know about P6 yet.


Cheers, J/.
-- 
John Beardmore