Memory speed vs size

Thread View: comp.sys.next.hardware

2 messages

[T] Back to Threads [V] Tree View [G] Group Articles

2 total messages Started by Adrian Steinmann Fri, 30 Oct 1992 12:24

#92

Author: Adrian Steinmann
Date: Fri, 30 Oct 1992 12:24

24 lines
1260 bytes

I am posting this for a friend, yet I'm interested in the response
myself and will relay the answers to him. Adrian.

I have an upgraded 040 NeXTcube with 8Mb of 100 ns RAM taken over 
from the 030 board. Since then I have added 32Mb of 80ns RAM of 
(4Mb chips) filling the available RAM board giving me 40Mb.

My question:

Is it better to have 40Mb with 100 ns access
OR
Is it better to have 32Mb with 80 ns access

What are the pros & cons - I notice all new NeXTs run with 80 ns chips - ?

Thanks for your input,

regards,

=mark

  Mark Smith, Strehlgasse 13, CH-4460 Gelterkinden, Switzerland
             Tel: +41-61-991466  Fax: +41-61-991466
Internet: mark@cubus.open.ch (NeXTmail understood and spoken here)

Re: Memory speed vs size

#108

Author: Nathan F. Janette
Date: Fri, 30 Oct 1992 19:50

25 lines
1415 bytes

In article <1992Oct30.122406.28540@ifi.unizh.ch> ast@avalon.physik.unizh.ch  
(Adrian Steinmann) writes:
> 
> I have an upgraded 040 NeXTcube with 8Mb of 100 ns RAM taken over 
> from the 030 board. Since then I have added 32Mb of 80ns RAM of 
> (4Mb chips) filling the available RAM board giving me 40Mb.
> 
> My question:
> 
> Is it better to have 40Mb with 100 ns access
> OR
> Is it better to have 32Mb with 80 ns access

No difference.  The memory is accessed at 100 ns.

> What are the pros & cons - I notice all new NeXTs run with 80 ns chips - ?

The new "turbo" memory subsystem uses different SIMMs
which it accesses at either 70 or 100 ns. 

--
Nathan Janette		"I'm a NeXTstep man,
Dept MB&B, Yale Univ	 I'm a NeXTcube guy"
New Haven, CT
nathan@laplace.biology.yale.edu (NeXT)

Thread Navigation

This is a paginated view of messages in the thread with full content displayed inline.

Messages are displayed in chronological order, with the original post highlighted in green.

Use pagination controls to navigate through all messages in large threads.

Back to All Threads