Notebook = normal form factor. 35/45 watt laptop processors.
Ultrabook = Intel Ultra Low Voltage (ULV) processors. Ultra-portable form factor controlled by Intel. Manufactured by OEM.
Macbook Air = Apple's ultra-portable with Intel ULV processor.
HP Sleekbook = HP's line of
thin ultra-thin notebooks with
35 25 watt AMD Trinity.
Netbooks = Intel Atom or AMD C-50/E-350. Every Intel Atom sucks. Netbook market is nailed on by AMD APUs.
17
/25 watt ULV AMD Trinity, yet to come.
Talking of laptops.
AMD A10-4600M = 35 w. Processor performance is between i3-2330M and i5-2410M. i5-2410M should be ~10% faster overall in multi-thread performance and 25% in single-thread performance.
But all the i3/i5/i7-2xxxM have crappy Intel HD 3000 graphics. Add a discrete graphic card and you hurt battery life.
AMD A10-4600M has built-in Radeon HD 7660G which is > 2 times faster than Intel HD 3000. (i7-3xxxQM has Intel HD 4000, but that processor is for $1800 notebooks)
You add a discrete graphic card in a laptop, battery performance gets hurt.
You add a discrete AMD Radeon graphic card with A10-4600M, it gets crossfired with HD 7660G which means even more fast in gaming.
Macbook Pro 13" has i5-2430M and is priced at $1200. Competing i5 laptops from Dell etc. are priced $950. HP Sleekbook has A10-4600M and is priced at $600.
At same rated battery, A10-4600M is slightly more power efficient than i5-2410M, much faster in graphics and slightly slower in CPU.
You'll notice games running faster in A10-4600M rather then the processor being slightly slower than i5-2410M.
In its price range, A10-4600M wins. HP Sleekbook wins hands down vs Ultrabook.
Plus, I can spare $150 for a SSD and put it in HP Sleekbook which will make it miles faster/responsive than any laptop in $750.
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Coming to ultra-portables, the only choice is Macbook Air. "Ultrabooks" by HP/Asus/Acer etc. are crappy. Pay slightly more and you can buy Macbook Air. (May be not in India)
Waiting for 17/
25w AMD Trinity - which might make going for Macbook Air/Intel ULV stupid.
Sleekbook are Ultrabooks but powered by AMD Trinity processor. No other difference. And may ship with conventional HDD rather than SDD.
Aside from form factor, they are not. - oops! ya they are same with the ULV CPU.
Ultrabooks use ULV processor. AMD's ULV processor is
yet to arrive. 25w has arrived.
Sleekbooks use normal AMD processor. Form factor
may be is similar.