I read with interest this quick write-up about the Memory Translator Hub chip used in Intel's 820 and 840 chipsets. The article nicely summarizes the design decisions Intel made with the MTH and where the big performance bottleneck for the 820 comes in.
By the way, given recent events, I would avoid like the plague buying an 820 or 840 chipset-based motherboard or system, no matter how big (Dell, Intel) the name behind it. These puppies were designed for Rambus (another flop) and will be orphans (or at least stepchildren) as soon as Intel can replace 'em.
Anybody disagree? :)
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