[libre-riscv-dev] additional ddr3 interfaces

Luke Kenneth Casson Leighton lkcl at lkcl.net
Wed Apr 1 16:42:01 BST 2020

On Wed, Apr 1, 2020 at 4:19 PM Staf Verhaegen <staf at fibraservi.eu> wrote:

> Power consumption is linear with frequency and square with voltage (P = f * C * V^2).

ah thank you.  forgot about that.  the figures i got were from a
special TI video processing chip, with dual 32-bit DDR3 1600mhz
interfaces.  the power consumption figure was 1.6 watts per channel.

> For overclocking increasing frequency also likely means you need to increase voltage so you need to increase power consumption more than linear with frequency.

yes.  i think that's where i was confused (overclocking almost always
involves increasing voltage).  actually it's a huge source of
confusion across the internet, that one.


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