Hello Yourarnav,
Did you have a specific budget in place for your server? Also, how much bandwidth and on what port speed did you need the server. This would be a good reference point for host looking to provide you quality service. Lastly, what location would be ideal for you?
Intel Core i7-3820 (4 cores x HT x 3.6GHz) may work for your needs as well. Great power and affordable. Then again everything depends on the budget you have for your server. If you are looking for cheap and versatile you may be in the wrong ball park. Most on Wjunction want unmanaged cause its cheaper, but may be lacking on service.