By: Kevin G (kevin.delete@this.cubitdesigns.com), April 25, 2013 7:36 am
Room: Moderated Discussions
EduardoS (no.delete@this.spam.com) on April 24, 2013 11:32 am wrote:
> Mark Roulo (nothanks.delete@this.xxx.com) on April 24, 2013 10:38 am wrote:
> > I think that the power for DRAM is (roughly) proportional to the bandwidth used.
>
> And where wire length enters the math?
>
> Also, since the data will be accessed anyway, the closer the more economic...
There are also the standard factors of clock speed and voltage. The eDRAM should be running at a much higher clock than standard DRAM. Voltages are another factor too. Being in package should help reduce the voltage required to reach the CPU die significantly.
Also how do the die size estimates stack up against commodity DRAM dies? I've gotten the impression that Intel's eDRAM is indeed larger than commodity DRAM dies from various articles but I'm not familiar with the raw numbers on the DRAM side to say definitively. If the eDRAM die is indeed larger, it'd be logical to assume it'd consume more power due to higher transistor count, all other things being equal.
> Mark Roulo (nothanks.delete@this.xxx.com) on April 24, 2013 10:38 am wrote:
> > I think that the power for DRAM is (roughly) proportional to the bandwidth used.
>
> And where wire length enters the math?
>
> Also, since the data will be accessed anyway, the closer the more economic...
There are also the standard factors of clock speed and voltage. The eDRAM should be running at a much higher clock than standard DRAM. Voltages are another factor too. Being in package should help reduce the voltage required to reach the CPU die significantly.
Also how do the die size estimates stack up against commodity DRAM dies? I've gotten the impression that Intel's eDRAM is indeed larger than commodity DRAM dies from various articles but I'm not familiar with the raw numbers on the DRAM side to say definitively. If the eDRAM die is indeed larger, it'd be logical to assume it'd consume more power due to higher transistor count, all other things being equal.