[Bug 57281] Radeon: Bad performance and power consumption

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https://bugzilla.kernel.org/show_bug.cgi?id=57281





--- Comment #6 from Nick <ka.nick@mail.ru>  2013-04-30 12:14:25 ---
(In reply to comment #3)
> (In reply to comment #0)
> > After upgrading my AMD E-450-based notebook to a newer one (HP 4545s
> > A4-3300-based) i noticed that in spite of noticeable higher clock rate the
> > video performance is about 15-20% worse than on E-450.
> 
> How did you measure that?
- gtkperf (which is the only "test" that shows an improvement about 30%)
- compiz benchmark (shows a regression)
- glxgears in both "dafault window" and full-screen modes - shows a regression,
too. 
(Yes, I'm aware it's NOT a benchmark, for instance I noticed it's very
dependent on CPU part: simple change of a CPU governor may change figures
dramatically, and so on...) But in my case (I use exactly the same environment
except the hardware) its numbers apparently correspond well to what I "look and
feel" while using the computer: how smooth the  cube rotates, firefox scrolls,
etc. Unfortunately, it *is* slower, hotter and gives a shorter battery life...
And while I found open source driver on E-450 quite usable, I've to switch to
fglrx on my new notebook so far -- having all it's disadvantages and
headaches...

BTW, if you can suggest a reliable benchmark, I could do the measurements...

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