PCB revision on 503A

Hello,

I'm to buy used 503a, but I've no information about PCB revision. As far as
I know there were four: 1.0 -1.3. Can anyone tell me what's the difference
between all of them? Do all 503a's support 1.8V-core? And finally: Does 1MB
L2 cache has to be in two chips, or the absence of one says that it's 512kb
version?

"socket7!" wrote:

> Hello,
>
> I'm to buy used 503a, but I've no information about PCB revision. As far as
> I know there were four: 1.0 -1.3. Can anyone tell me what's the difference
> between all of them? Do all 503a's support 1.8V-core? And finally: Does 1MB
> L2 cache has to be in two chips, or the absence of one says that it's 512kb
> version?

You want E-O037 1.2A if you want to run K6-3+ at 2.0v.
I think you are right about the 1M being 2 chips, and 1 chip is 512k

socket7! wrote:
> Hello,
>
> I'm to buy used 503a, but I've no information about PCB revision. As far as
> I know there were four: 1.0 -1.3. Can anyone tell me what's the difference
> between all of them? Do all 503a's support 1.8V-core? And finally: Does 1MB
> L2 cache has to be in two chips, or the absence of one says that it's 512kb
> version?
>
>
I have the 503A board and it is a 1.3 board. It also has two cache
chips which equates to 1 MB of cache. Although I think I have the core
voltage set to 2.0 volts, it is capable of going as low as 1.8 volts.
As for the difference between version 1.0 and 1.3, I can't help you
there. It is a great mother board!!!

Ken