Which Laptop to choose from?

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I'm very confuse right now on which one to choose from. Both cost the same and the only differences are LCD 17" and 15" inch and one comes with Quad and the other with I7.

Should I upgrade:
1) The ram to 6GB or 8GB or stay 4GB
2) For M17x processor to Intel® Core™ 2 Extreme Mobile Processor QX9300 (2.53GHz/ 1066 FSB/ 12MB Cache)

or

3) For M15x processor to Intel® Core™ I7-920XM Mobile Processor Extreme Edition (2GHz, turbo up to 3.2GHz, 8MB L3 Cache)


I'm not much of a hard core gamer but I do wish to have an Alienware for my own.

Please give me recommendations about these two different spec. Any advices on upgrade or suggestions will be taken seriously.


M15x Spec
- Metallic Space Black Base
- Intel® Core™ I7-820QM Mobile Processor (1.73GHz, turbo up to 3.06GHz, 8MB L3 Cache)
- 4GB Dual-channel 1333MHz DDR3 SDRAM (2 x 2GB)
- 500GB 7200RPM SATA Hard Drive
- Slot Load Fixed Blu-ray BD-ROM / DVD + /-RW Combo Drive
- 1GB GDDR3 NVIDIA® GeForce® GTX 260M

M17x Spec
- Metallic Space Black Base
- Intel® Core™ 2 Quad Processor Q9100 (2.26GHz/ 1066 FSB/ 12MB Cache)
- 4GB Dual-channel 1333MHz DDR3 SDRAM (2 x 2GB)
- 500GB 7200RPM SATA Hard Drive
- Slot Load Fixed Blu-ray BD-ROM / DVD + /-RW Combo Drive
- Single 1GB GDDR3 NVIDIA® GeForce® GTX 260M


Thanks for all your help.

RE: Which Laptop to choose from?

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i would go with the first choice,8 GB and Intel® Core™ 2