One cannot usually limit his or her laptop to a single purpose. If you are looking for a writer's laptop with preloaded Windows 8 and inbuilt 2GB RAM, surely your intention is not confined to writing articles only but with time you would like to play games and much more on it. Isn't it?
Even a laptop with minimum configuration is good for article writing purpose and would last for couple of years.
But here are some top laptops for writers under your desired configuration and price.
1. HP Pavilion series laptops have a good battery life. In short they are excellent for article writing and other purposes as well.
2. Ultrabooks house a good battery life too which is great for a writer. I too have an Ultrabook under 50K and its battery backup can allow me to write continuously for 6 hrs.
Toshiba Portege z835 Ultrabook is excellent and has a battery life of 9 hrs. On the other hand, Lenovo IdeaPad U300s allows a nonstop break for 8 hrs.
3. MacBooks especially MacBook Air and MacBook Pro are also affordable units.
4. Also, Chromebooks are quick, simple and focused for such a purpose. Acer 720 Chromebook is suggestible.