Where did the 1.35v Samsung Green DDR3 go?

Samsung Green Memory

Can't find it for sale, supposedly production began last year? So where is it?

 

Have you seen:

See:
http://www.electronista.com/articles/11/06/09/samsung.30nm.ddr3.goes.into.ram.kits/

 

It's only a matter of time then I guess. thanks

 

Will this be compatible with any laptop?

 

any laptop with a chipset that supports ddr3 memory, yes.

 

I put a single Samsung 4GB DDR3 chip in my M11x and battery life actually went up appreciably. I think combo of going from two DIMMS to one, and the lower power dropped my average usage by ~ 0.5W. Doesn't seem much, but it can add another 20-30 minutes battery life. That's for low power use laptops though. I bought mine at newegg.

edit: wups, I realized it's still 1.5v RAM, not 1.35V. That article says "by summer" it's mid-way through summer and no sign of it!

 

Unless the laptops supports 1.35v, you're not going to be seeing a big improvement on battery life compared to Samsung 40 nm chips. One 2GB chip takes 1.38 watts and 4GB chip takes 1.88 watts on the 40 nm technology. You'll see a 7% drop in watts just going to 30 nm with 1.5v and another 12% going to 1.35v on 30 nm technology.

So it's makes sense if you have just one 4GB chip on your laptop and see battery life improvements but you also loose dual channel by doing so, 2 x 2GB 30 nm chips will still take more watts than 1 x 4GB 40 nm chip. I'd say if you're on DDR3-1333 on average upgrading to from 40 nm to 30 nm with the same amount and size chips will give you about 20 - 30 minutes extra battery run time.

However, if you're on currently on DDR3-1333 40 nm and you're laptop supports DDR3-1600 upgrading to the same size and number chips on 30 nm will give you a performance boost (DDR3-133 to DDR3-1600) and will not use anymore power than your current 40 nm DDR3-1333 (actually less but nothing noticeable in real world).

Little difference but still better than nothing...highly recommended for those who have laptops that support DDR3-1600 or want to upgrade from 4GB to 8GB without noticeable impact on battery life and performance.

PS. 2 x 4GB 30 nm will still use more watts than 2 x 2GB 40 nm but it'll take a bit less watts than 2 x 4GB on 40 nm.

 

I've seen zero performance degradation going with a single 4GB chips vs 2x2GB. With the newer integrated GPU's dual channel and faster RAM makes a difference.

 

you have seen no diference because your laptop cpu is no that data hungry i seen a diference on mine when testing with my qx but it's negligible

 

Well I did it on an NP8170 that I had with i7-2720QM and GTX 485m, and still benchmarks remained within a couple % of each other.

 

MEH, only noticeable battery life gain with netbooks and such. And I`ll wait until 1866MHz++ is available. Then the 20% performance boost (or something like that) will be nice

 

Even with 1866MHz, I doubt regular tasks and even accelerated tasks that speed will make much difference from 1333MHz. IGP graphics are about the only thing for it to make any noticeable difference.

 

30 nm technology is all about those who want to go 2 x 4GB without sacrificing battery life especially if one's laptop supports low voltage 1.35v and we can soon expect 8GB modules to be available using 30 nm technology.

 

Not specifically about 30nm - but memory module speeds are mostly about bragging rights (unless 2 or 3% really means something to you).


See:
AnandTech - Sandy Bridge Memory Scaling: Choosing the Best DDR3

 

http://www.legitreviews.com/article/1652/

Llano, on the other hand...

 

Even with Llano showing ~20% improvement with faster RAM, it is only/mostly on games.

In productivity scenarios, high(er) speed RAM is still a waste of time and $$$ - unless you have tweaked and optimized every other parameter in your system/platform.

For gaming - especially with integrated graphics, such as Llano - sure, better/faster RAM might make some sense. But the money is more wisely spent towards a faster GPU in the first place, imo.

 

Yes, except in the case that it's impossible to find a laptop with anything more powerful than the 6750m + 6620G that gets more than three hours of battery life.