[Info-vax] AlphaServer DS10 470 MHz?

[glen herrmannsfeldt]

Paul Sture <paul at sture.ch> wrote:

(snip)
> The PC that landed on my desk about 10 years ago claimed to be a 400MHz 
> model but during the time I had it faithfully reported 399.

> I really wanted to know where my 1 MHz had gone :-)

> It was probably within manufacturing tolerances for the hundreds of 
> thousands or millions of that model produced.

I think to do that it uses the TOD clock as a reference.

Between the TOD clock tolerance and the CPU clock tolerance, and
even round-off, it seems you got 399.

The TOD usually uses a laser-trimmed crystal, as long-term error
is much more noticable there.

-- glen