How much power does the PUMA chipset draw?

Hi folks,

just been reading this:
http://www.umpcportal.com/2008/08/e...o-gives-performance-figures-gamers-take-note/
at the umpcportal site about a new 7" raon device using an underclocked Turion X2 with the 690G chipset.

this seems like a missed oportunity to me, as the device would be awesome if it could use the PUMA platform and thus the HD3200 graphics.

according to wiki the 690G chipset uses between 8W and 13.5W depending on the version, can the new 780G chipset be down clocked to consume the same?

it is a lot more complicated with 205m transistors, but at the same time it is manufactured on .055u rather than .08u lithography.

if it requires a 9″ netbook chassis then so be it, but real DX10 horsepower in that small a formfactor would be awesome. if it can be done with the 690G it can be done with the 780G.

so how about it, how much power does the 780G draw, and could it be underclocked/undervolted to get within the same ballpark as the 690G?

regards

 

Possibly under clocked, but not undervolted as RMClock does not support the Puma chipset yet. I don't know if other programs do yet either.

My experience with Puma: My cousins HP dv5z runs at 92c under full load... ouch.

 

Is that the RM-70 or another one?
Pretty hot

 

my interest stems from someone like raon trying to shoehorn PUMA into a netbook formfactor, so they would be able to underclock/undervolt as they pleased.

my question is how much power PUMA draws now, and what that could be reduced to?

 

The M780G should be capable of lower power requirements considering the desktop equivalents consumer less power than the 690G. The 780G has an idle power draw of 0.95W, so dont know how much lower they can go with the mobile version. But, yeah it is definitely possible to use it on a netbook considering the the atom uses the relatively old 945/GMA950 chipset which most likely consumes more power than the M780G.

 

according to this article, the 780G draws 0.95W as compared to 22.5W for the 945GC:
http://www.tomshardware.co.uk/Atom-Athlon-Efficient,review-31253-3.html

that is quite simply staggering!

 

Can't be undervolted?

 

It can be undervolted but unfortunately development of the only program which was able to underclock AMD's successfully - RM Clock(or even crystal cpuid) seems to be dead. The last update was back in Feb 08 and the developer who was originally involved and was very active in the forums seems to have left the project, so updates supporting newer stuff isnt available yet.

 

I see... but how about AMD own cooling technology?
A member of the forum told me that the lowest vcore his Acer laptop was using with cool and quiet was 0.8v which about the same as what can be achieved with RMClock.

 

Oh yeah, that exists in all mobile AMD cpu's. The Turion RM & the ZM series both can downclock to ~600MHz @ 0.8V while the Athlon QL & Sempron SL's can downclock to 950MHz @ 0.95V. They do have that capability, its only additional undervolting without updates to those programs is not possible.

 

ah, i thought 0.95W was too low for full load power draw which is the implication of the tomshw articles, where did you find the idle power draw figure, and any idea of full oad draw?