Hi Leute
Intressant ....
Gefunden bei: XS.org
Icon Idea Multi-GPU
Concept -> 1 master chip and up to 4 slave chips.
The master chip is like a normal GPU... but with 4 SidePorts.
These SidePorts use the Rambus FlexIO Interface:
· Rambus FlexIO is capable of running from 400 MHz to 8 GHz.
· Contains only 12 lanes (5 lanes are inbound, 7 outbound)
· Theoretical peak I/O bandwidth of 76.8 GB @ 8 GHz (44.8GB out, 32GB in)
· Total bandwidth: 76.8GB/s x 5 SIMD Core (1 internal + 4 "slave chips") = 384GB/s
Q. Why use Rambus FlexIO Interface ?
A. Because AMD can use it (Rambus Signs Patent License Agreement with AMD) and because it's realy fast :
Quote:
"While Cell’s XDR interface offers over 2x the memory bandwidth of any PC-based microprocsesor, Cell’s FlexIO interface weighs in at 76.8GB/s - almost 10x the chip-to-chip bandwidth of AMD’s Athlon 64." - Anandtech
A picture is worth a thousand words -> HD 5870 Concept
Wird wohl zudem eine HD5870 X4 geben 
