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2. I think you mean liquid nitrogen cooling. Thats usually used for extreme overclocking, which isn't what you want. I think the stock cooling that comes with your computer will be fine, as long as you don't leave on for more than 24 hours straight while running a game.
3. This is sort of a guess but in gaming, having a low latency means that your commands will be performed faster. I have 2 GB of RAM and honestly, I've never seen it be used to the limit and I do quite a lot of things with my computer so I think 2 GB is best for now.
4. This is from from Wikipedia:
- RAID 0: Striped Set (2 disks minimum) without parity: provides improved performance and additional storage but no fault tolerance from disk errors or disk failure. Any disk failure destroys the array, which becomes more likely with more disks in the array. The reason a single disk failure destroys the entire array is because when data is written to a RAID 0 drive, the data is broken into "fragments". The number of fragments is dictated by the number of disks in the drive. Each of these fragments are written to their respective disks simultaneously on the same sector. This allows the entire chunk of data to be read off the drive in parallel, giving this type of arrangement huge bandwidth. When one sector on one of the disks fails though, the corresponding sector on every other disk is rendered useless because part of the data is now corrupted. RAID 0 does not implement error checking so any error is unrecoverable. More disks in the drive means higher bandwidth, but greater risk of data loss.
- RAID 1: Mirrored Set (2 disks minimum) without parity: provides fault tolerance from disk errors and single disk failure. Increased read performance occurs when using a multi-threaded operating system that supports split seeks, very small performance reduction when writing. Array continues to operate so long as at least one drive is functioning.
Well, that's the best I can help you with. Whatever computer you're going to get, it's going to be great. I'm jealous...>_>