Offler

I am currently messing with my netbook with Atom CPU...

Its Atom N550 dualcore with hyperthreading. It has single DDR3 memory channel, limited to 2gb in capacity.

Memory has Micron D9*** chips. Marked as 1333Mhz CL9. System underclocks the memory to 667 CL5.

The DIMM module has only 8 chips (single rank, single bank whatever).

Now... I have two goals with this system from point of memory...

1. Gain speed 667 at CL4. Dont know if its possible. Bios does not have such option
2. Decrease power consumtion.

The whole system including display has power consumption of 6-12 watts. (idle - activity). Every single watt has quite impact on battery life.

Therefore I am looking for ultra-low power module with 8 chips (single rank, single bank). What memory chips will you recommend? Something that has power consumption of 1,35v or less at 1333cl8 would be great (if the system works as I expect it).

eva2000

30nm Samsung 1.35v
http://www.amazon.com/Samsung-Electr.../dp/B00592002W

Going to be testing some of this stuff soon

Offler

hmm. do they come in So-Dimm package?

edit:
Yes they do. But not in central/eastern europe

http://www.shopping.com/samsung-sams...0-204-pin/info

This but not a kit, single module will be enough.

By the way, what manufacturing process and stock voltage is used by Microns D9 chips? lets say its D9GTR (have to check it again).


Old memory:
http://parts.digikey.com/1/parts/243...4hz-1g4d1.html

Its 50nm process

Just I fear that they wont work with the netbook. check:

http://forums.lenovo.com/t5/IdeaPad-.../246698/page/6

Link to the correct module:
http://www.samsung.com/us/computer/m...3T2G3/US-specs

Micron module I currently have is 1333CL9, while higher ranked modules with those chips can be 1600CL11. All of them seems to be compatible with 667 CL5 or 667CL6 at least. This samsung seem to comply to these specs. I just fear the netbook will load it with 1,5v instead of 1,35v. Expected power consuption of this module is 0.7 watt. But I am not able to find any information about power consumption of the Micron modules.

Edit2
Hmm. Rough calculations based on Current and voltage shows that the 1gb single ranked Micron module has power consumption of 3 watts on 1333Mhz, at 1,5v. on 667 it should be bit more that 1,5 watt. Samsung has this power consumtion at full frequency at 1600Mhz and 1,35v. So the expected power consumption by memory should be half than now. Not bad - sparing 0.7w on memory will have its impact since memory is always online even in power saving modes.

And according to the reviews on some forums those chips seems really great... Since my elpidas still have some trouble running stable maybe its worth a try...