Why not SRAM? - Capacity

Article: Intel's Near-Threshold Voltage Computing and Applications
By: Rohit (a.delete@this.b.c), October 9, 2012 9:13 pm
Room: Moderated Discussions
SHK (nomail.delete@this.mail.com) on October 9, 2012 12:55 pm wrote:
>
> IIRC
> GSI-Technology makes some very fast SRAM with 288Mbit density, but i'm
> not sure
> if it's already in full production.
>
> RLDRAM is still a DRAM so it stores 1 bit
> in 1 capacitor making it's denser
> than a SRAM which uses at least 4 transistor
> for bit.
>
> What puzzles me is that seems that even in the HPC sector the memory
> used is the same kind of
> cost-optimized DRAM which goes in a desktop pc. Hardly
> an "high-performace" choice
>

Capacity is very important. Large RAM sizes (even if they are slower) are essential for many apps. Slow RAM means slow result. Low RAM can often mean no result in meaningful time, for an appropriate definition of "meaningful".
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