i can no longer able to access recovery partition by pressing f9@ f10 during boot...how can i fix this?its my notebook, asus a42jv...i want to reiinstall my OS7 by using the recovery partition

This post has been edited by dante10: Oct 13 2010, 04:46 AM

well, not that ur eyes can really tell... anything more than 30 is already good enuf...

well, the a42ja processor is same? coz i heard SC2 depend on processor more than gfx card...

A42Ja use 740QM...

however SC2 is optimized for dual core... so more core means nothing...

oh you're so wrong....

You think when running SC2, only SC2 is running?

Since SC2 is optimized for dual core, the other core is used for OS and system process while
the remaining 2 core can be optimumly used by SC2....

If you mean it like that, then the i7 would only run at 1.7GHz

what u mean?

i7 740QM if run at 4 cores, it would run in 1.7GHz
only at 2 cores, it would turbo boost...

If by your definition, 2 cores for SC2, others for other resources, means it need to run at 4 cores, then it can't turbo boost, hence running SC2 in 1.7GHz?

well, can you confirm that SC2 running, only 2 core active?

This post has been edited by gogo2: Oct 13 2010, 09:57 AM

Nah, no way, it should go back and forth from 1-2-4 cores in split of seconds..

then the frequency keep on changing? lol... i dun think so gua... later the system goes haywire...

Well, the turboboost should kick in depending on loads/thread, which means frequency keep changing...

agreed... but i would say the frequency change is not really split second... probably, it'll wait a while
and see.

the wait awhile for CPU is split second for human...

dun forget CPU count time in nanosecond...

lol.. probably you're right.... but anyway, I didn't update myself with Turbo Boost thingy.. so I'm not sure
exactly 100% how it'll work. Last time when I work in Intel, I'm part of verification team to verify Turbo
mode.

im using a42ja, after a lot of research..yes 5730 slightly better plus the dx11 feature(maybe not so appealing but still..)..5730 just a higher clock version of 5650..the 2gb vram really helps a lot when i plug out the display into 24" dell ultrasharp...

The calculation should be like this:-
Core i7-740QM
- Turbo 1/1/6/9
- First number is the multiple of 133.33 MHz supported when four cores are active, the second number is the multiple for three cores, the third number is for two cores, and the fourth number is for one active core.
- Normal operating frequency is 1.73 GHz = 1730 MHz
* With 3 or 4 cores active: to 1.863 GHz —————> 1730 + 1 x 133.33 = 1730 + 133.33 ≃ 1863.33
* With 2 cores active: to 2.529 GHz ———————> 1730 + 6 x 133.33 = 1730 + 799.98 ≃ 2529.98
* With only 1 core active: to 2.929 GHz —————–> 1730 + 9 x 133.33 = 1730 + 1199.97 ≃ 2929.97

* When 4 cores active, the frequency is low (1.863 GHz) but remember it running 4 cores. 1.863 GHz 1 core vs 1.863 GHz 4 cores; the later performed much much better.

Quote from Intel website:-


This post has been edited by kizwan: Oct 13 2010, 12:58 PM

if the software/game is written so perfect to use 2 core, then effectively the frequency double...

meaning, at 1.73ghz dual core x 2= 3.4GHz (effective)

No. Running on 2 cores will not double the processor frequency. The advantage of 2 cores vs 1 core is 2 cores can process two task simultaneously compared to 1 core which only can process 1 task at one time. It doesn't double the processor frequency.

This post has been edited by kizwan: Oct 13 2010, 03:51 PM

oky thx. will do when got back from campus.