Warp wrote:
> Orchid XP v8 <voi### [at] devnull> wrote:
>> I still kinda wish you could actually build a PC that had several GB of 
>> RAM running at the same speed as the CPU - but I'm guessing it might be, 
>> uh, slightly expensive?
> 
>   I'm not even sure it would be physically possible. L1 caches are always
> quite small, and I'm not sure it's all about money.

Yeah, speed-of-light delays can kill you, and a huge amount of the delay 
comes from address decoding rippling thru the cascade. Or at least used to.

That's why the old Cray supercomputers were cylindrical - it put the 
edges of the CPU cards that much closer together so they could talk faster.

-- 
   Darren New / San Diego, CA, USA (PST)
     "That's pretty. Where's that?"
          "It's the Age of Channelwood."
     "We should go there on vacation some time."

Post a reply to this message