Asus G53SX-A1
Specifications

Price comparison
Average of 3 scores (from 5 reviews)
Reviews for the Asus G53SX-A1
Source: Techgage

All-in-all, ASUS' G53SX gaming notebook has impressed me a lot. If I were in the market for a "real" gaming notebook, I'd have no hesitation in choosing this one given what it offers at its price-point. I do still hate the lack of a BD-ROM, but that's a personal want; yours may be totally different.
Single Review, online available, Very Long, Date: 12/14/2011
Source: PC World

The Asus G53SX will please a very specific group of people, and disappoint others. Gamers looking for power in an inexpensive package may overlook the bulkiness and the poor audio quality (which headphones can quickly remedy). But the G53SX's ponderous weight and its inability to perform basic multimedia tasks, such as streaming a Netflix video, make it a poor fit for some other potential buyers.
Single Review, online available, Very Short, Date: 11/10/2011
Rating: Total score: 70%
Source: Notebookreview.com

ASUS continues to produce excellent all around gaming notebooks and the G53SX is no exception. It has fantastic performance, a great screen, sharp design, and even has decent battery life. One area that needs improvement is the keyboard; it has a poor feel with little tactile feedback. On the plus side it is backlit and has a separate numeric keypad. Something else to keep in mind with this notebook is that it is about as large and heavier than most 17.3-inch notebooks despite housing a 15.6-inch screen - travelers be warned.
Single Review, online available, Long, Date: 10/24/2011
Rating: Total score: 80% price: 80% performance: 90% features: 80% mobility: 80% ergonomy: 80%
Source: Best Gaming Laptop

One aspect that we haven’t mentioned yet is the price tag, and the G53SX offers extremely good value for money–the entry-level configurations (which are still equipped with a quad-core CPU, 8GB of RAM and the same GTX 560M) sell for less than $1,100 from some retailers. That’s the lowest price we’ve seen on a laptop with the GTX 560M.
Single Review, online available, Medium, Date: 10/10/2011
Source: Comp Reviews

For some gamers, a 17.3 inch screen might just be too big. If that's the case, the ASUS Republic of Gamers G53SX-A1 is a 15.6 inch gaming laptop that features robust components that are typical of ROG systems. However, the video card has a slower memory bus and no Blu-ray drive compared to the larger ASUS G74SX.
Single Review, online available, Short, Date: 09/12/2011
Rating: Total score: 80%
Comment
NVIDIA GeForce GTX 560M:
The successor of the GeForce GTX 460M based on the new GF116 chip. The performance is about 13% better than the 460M but with similar power requirements due to hardware optimizations.
Modern games should be playable with these graphics cards at low settings and resolutions. Casual gamers may be happy with these cards.
» Further information can be found in our Comparison of Mobile Graphics Cards and the corresponding Benchmark List.
Intel Core i7: The Intel Core i7 for laptops is based on the LG1156 Core i5/i7 CPU for desktops. The base clock speed of the CPUs is relatively low, but because of a huge Turbo mode, the cores can dynamically overclock to up to 3.2 GHz (920XM). Therefore, the CPU can be as fast as high clocked dual-core CPUs (using single threaded applications) but still offer the advantage of 4 cores. Because of the large TDP of 45 W / 55 W, the CPU is only intended for large laptops.
2630QM: Fast Quad-core processor based on the Sandy Bridge architecture with an integrated graphics card and dual-channel DDR3 memory controller. » Further information can be found in our Comparison of Mobile Processsors.