[rescue] SGI, Origin 200, and speed?
jdboyd at jdboyd.net
Mon Apr 26 16:14:36 CDT 2004
On Mon, Apr 26, 2004 at 04:07:07PM -0500, Micah R L wrote:
> Sometime in the past month we were talking about SGI speed and how a
> 195MHz something was way slower than a 195MHz something-else ... I can't
> find it in the archives (lordy, we put a lot of mail through here).
> Anyone have a link?
The discussion was about Octanes versus Indigo2s. Specifically, Octanes
are much faster than Indigo2s, even if both have a 195mhz CPU, and this
is due to the difference in memory bus between the two machines.
> I've been looking at an Origin 200s in the Austin area on eBay that I
> might buy. Does the above mentioned discussion pertain to Origin 200s?
Yes. A single processor O200 @ 180 mhz should be soundly faster than an
Indigo2 at 195 mhz for any task complex enough not to fit completely in
> Should I know anything about them before I purchase one? I can get a
> dual processor 225MHz one for 200$, but there's no shipping, and buying
> a 195MHz one for 99$ + 60$ shipping from Andover doesn't seem to be that
> much better. I also might try to bargain them down to their dual225MHz
> unit + their single225MHz unit for 300$, local pickup, and then Craylink
> em when I get another 225MHz proc in there. Good idea/bad idea? Price ok?
Upgrading from a single to a dual processor Origin200 is usually
considered a forklift upgrade. Technically a motherboard swap should do
it. I don't believe it is as simple as a CPU module swap. It certainly
isn't a case of just popping in a second CPU the way PCs are.
I would go for the dual 225s personally. Dual processor SGIs should be
a very invigorating experience. From the Octanes on, I believe every
SGI memory bus is fast enough to keep up with at least two CPUs
completely (with the possible exception of dual R14ks in an Octane).
If fast, if I could, I'd for the $300 deal you mention, even if I
couldn't cray link the two machines together.
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