From Malaysia?
Illegear has good warranty support.
Asus? Sorry, tell your mum she must be kidding  Laptop with worst warranty support in Malaysia.

Anyway, if mommy only allow Dell or Asus, stick with Dell.

Alienware M17x R4, i7-3630QM + Nvidia GTX660M + (1920x1080)@RM5999[Starting 5.3kg][Klipsch], 6GB, 500GB (7200rpm), W7HP/W8, backlit keyboard [GPU options: GTX660M/HD7970M/GTX675M/GTX680M)
Alienware M17x R4, i7-3840QM + Nvidia GTX660M + (1920x1080)@RM7549[Starting 5.3kg][Klipsch], 8GB, 2x1TB (5400rpm), W8, backlit keyboard GPU options: GTX660M/HD7970M/GTX675M/GTX680M); 3D/W7HP@RM7749

With your budget, get GTX680M SLI, 2x512G SSD (don't do RAID with SSD), extend warranty to 3 years, 32G RAM .... Just don't waste money on the 3D, stick with TV

Asus
A45VS-VX026H, i5-3210M + Nvidia GT645M@RM2199[2.4kg], 2GB, 500GB, W8
K46CM-WX090H, i5-3317U + Nvidia GT635M@RM2199[2kg], 2GB, 500GB, W8, OD

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Added on December 23, 2012, 12:59 am
With your budget, come on 
Of course, of course, need to think about mommy purse    But if green light is given 

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Added on December 23, 2012, 1:02 am
Could you tell us what you are going to use the laptop for? Other preference?
Each has its strength

You can get Alienware M18x with GTX680M SLI at (guess what) illegear 
Errr ... why don't you ask Prince J at LYN forum here. He is from illegear Direct from the horse's mouth, so to speak  (Ask your mum to grill him      )
http://forum.lowyat.net/topic/2613184
Basically, illegear is using the Clevo barebone, and give you the best for bucks components. Count our lucky stars that they are actually doing this in Malaysia for gamers    Other than Dell Alienware, this is the only place that you could get customised gaming laptop in Malaysia with proper warranty support.

Dear eugenelimys

If the computer shop hasn't signed up for our reseller program, he might not be able to resell our products to you.

Please pm me your email and phone number and I will ask our Penang reseller to get back to you.

Or, please pm me the computer shop's phone number and we will liaise with them directly.

Hey, I bet your mum love you very much
I could only wish I had a mum who bought me RM15k laptop when I was young
Make sure you give her a big kiss and hug for Christmas and New Year

If you are more concerned about better warranty support (on-site and complete cover), then pick the AW M17x (not the M18x since its not covered here in Malaysia).
However, if you are looking to fully maximize the specifications for your budget, then its definitely the Illegear RX17
Summore there's a X'mas promotion on Illegear products too 

Good luck in your study
Aren't we all scare of our parents some time in our life? 
As you grow older (and especially after you have your own kids), you will appreciate your parents more
In the mean time, enjoy the free lodging, free laundry, free food ...   

all gaming laptops are like that bro. worry about battery? bring a power bank or 2nd battery along with you if you dont want to bring the power brick.

AW 9 cell battery is enough for you to use up to 3.4 hours.

AW has enduro or optimus, so please not to worry. like i said earlier, only Illegear models like RS-17 and lower only have enduro or optimus, while RX-17 doesnt have it.

Depends on how bright those lights are... but it should be alright if you set the screen brightness to max.
The screen though, is no match for the power of the sun- a very big problem in all AW models
Not sure why AW don't want to at least offer anti-glare screens 

i think he likes AW more than sager, as AW can customize the whole laptop lighting.

All these monsters are very heavy man
It doesn't matter which one you choose haha 

add some accessories as well.  

EDIT : im will be the same as you to go for the same AW laptop. look at my siggy and you will know why.

add accessories like mouse, keyboard and the laptop bag upon purchase.

MERRY CHRISTMAS!  

no. never upgrade more than 8GB from dell if you dont want to waste money. the RAM can be added later to save money, just remember to choose the same spec as the RAM offered by dell.

also, its not recommended for you to upgrade more than 16GB if you just want to play games, do homework stuffs and simple multitasking. 32GB is for professional users like AutoCad those.

Steady 

You pretty much set on AW since you like the bling bling and mummy like the warranty support?
If yes, then priorities (geezz, with your budget, still have to do this?  )

What is generally most important for gaming?
GPU (so you max this out first)
CPU (standard should do, don't need to overkill)
DD (this usually is the BOTTLENECK. You don't want your HDD crawling to catch up. Get the biggest SSD you can. Get 2 if Dell allow (I have not check their DD configuration).
Then, left over, just max out on the RAM.

Now, do NOT just click buy and fork over the money.
Negotiate. Online chat with Dell sales agent. Chat with as many sales agent as you like, since each one could give you different deal.
What you want to achieve is: 10 - 15% reduction in list price. That mean you rake up until somewhere like RM17k, then you online chat to bring it down towards your RM15k budget. It can be done. And some sales agents will start throwing free gifts at you (like external mouse, keyboard, bag ... ), if you don't want them, counter and get more discount.
Once you pull it off, show it to mummy, and get more browny points 

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Added on December 25, 2012, 8:24 am
You ignore the suffix i3-3110M vs i3-3217U.
3110M is the Mobile processor. More powerful than 3217U.
3217U is the ULV (ultra low voltage) processor. Run at lower wattage (17W vs 35W for 3110M). Save power, run cooler, more suitable for ultrabook. According to Intel, not all chips off the oven can be made to run in low wattage, so ULV processor is more expensive than M processor, even though M processor (for the same class) is more powerful.

If you ignore ultrabook, with your budget, you can get way better than HD 4000 & i3

Acer
Aspire V3-471G-53212G75d, i5-3210M + Nvidia GT630M@RM1899[2.3kg], 2GB, 750GB W8

Dell
Inspiron 14R, i5-3210M + Nvidia GT630M@RM1899[2.38kg], 4GB, 500GB(5400rpm), W7HP/W8

HP
Pavilion G4-2132/2133TX, i5-3210M + AMD HD7670M@RM1899[2.19kg], 2GB ,500GB(7200rpm), W7HB, colors: white/black
Pavilion G4-2107AX, A10-4600M + AMD HD7670M@RM1899, 2GB, 500GB

Lenovo
G480, i5-3210M + Nvidia GT635M@RM1899, 4GB, 1TB (5400rpm), W8, 2 yrs warranty