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[phoronix] AMD Works On Linux Power Savings For Future CPUs

post #1 of 10
Thread Starter 
Quote:
New kernel patches by AMD for the Linux kernel provide "frequency sensitivity feedback" for the powersave bias in cpufreq. This hardware feedback feature is to be introduced on future AMD processors.

This patch-set allows the system to make more power conscious frequency changing decisions based upon hardware feedback. The hardware bits are to be found on "AMD Family 16h" processors and above, which is the forthcoming AMD "Jaguar" product. AMD provided the original Linux kernel support for "Family 16h" at the end of 2012.

http://www.phoronix.com/scan.php?page=news_item&px=MTMzNzU
post #2 of 10
Wish they worked on proper Crossfire support instead.
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post #3 of 10
This is good.
Quote:
Originally Posted by RipperLord View Post

Wish they worked on proper Crossfire support instead.

They can work on more than 1 thing at a time. The CPU and GPU divisions are independent of one another.
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post #4 of 10
Thread Starter 
Quote:
Originally Posted by RipperLord View Post

Wish they worked on proper Crossfire support instead.

AMD produces processors and graphic cards so they have two different divisions/groups, AMD's GPU division is smaller than Nvidia's so that means they can't quickly address the issue but they will fix it soon and GCN architecture in Radeon HD 7xxx series is so different compared to architectures in their previous cards so they now finally properly can handle their drivers even thought I would suggest a complete rewrite of drivers to ease updates in the future...
post #5 of 10
Quote:
Originally Posted by RipperLord View Post

Wish they worked on proper Crossfire support instead.

Either way, CPU power savings are much more relevant for 99% of people than Crossfire support.
post #6 of 10
Quote:
Originally Posted by RipperLord View Post

Wish they worked on proper Crossfire support instead.

That is not relevant for mobile//laptops. It's also not relevant for people that buy computers from OEMs (even high end ones with i7 or FX-8350 do not have Crossfire).

Also less power = less heat = higher OC
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post #7 of 10
Quote:
Originally Posted by RipperLord View Post

Wish they worked on proper Crossfire support instead.

Purchase single fastest card you can afford then when you want to upgrade sell said card and put it towards the next single fastest card you can afford. Profit? Single card is always better than a multicard setup, unless you are running 5 screens at once while gaming, then you will need the power of a multicard setup.

Good to hear though, I would love to see AMD, Intel too, focus more on Linux. The multithreading on Linux is handled so much better than on Windows. It is nice to see that Linux is getting some love and with gaming migrating towards Linux maybe we will all be running it in the next few years as the primary OS. One can only hope.
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post #8 of 10
I wonder if this will also work with Windows 7/8, or does support already exists for them?
Quote:
Originally Posted by AlphaC View Post

That is not relevant for mobile//laptops. It's also not relevant for people that buy computers from OEMs (even high end ones with i7 or FX-8350 do not have Crossfire).

Also less power = less heat = higher OC

There are many APU laptops that come with dedicated GPU.

Nothing against AMD, but I'm quite skeptical of CFing two asymmetrical low/mid-range MOBILE chips, that are most likely going to have worse stuttering than a 7950 CF.
Edited by A Bad Day - 3/29/13 at 7:10am
post #9 of 10
Come on AMD. Once they get their drivers (open source or otherwise) working at the same level of ease as Nvidia's and consistently...then I'm going for APUs.

Just hope for their sake this is before 2016 when Nvidia should have their Tegra6 monster released and likely have it already in the kernel.
     
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post #10 of 10
Quote:
Originally Posted by crust_cheese View Post

Either way, CPU power savings are much more relevant for 99% of people than Crossfire support.

More like 99.99%! tongue.gif
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