Buying a new laptop is a very, very tricky process because there are so many different ones and new ones being released constantly. If you start with only the specs you need, you're going to get lost. We can't really give any
specific advice on models beyond, "Hey I bought this and it's great and cheap" or "I bought this and it's crappy and expensive". Or we could just pick one for you, but where's the fun in that?
So here's my advice as someone who recently purchased a couple used laptops:
1) Choose a brand of laptop
first.
2) Check their website store to see what the newest released machines are, and see if any of them fit your
general required specifications and price range. If they seem too expensive, go backward in release time if you can.
3) Once you've found a few models that might fit, then you can start comparing them. To figure out the specs for the processors, you can find the information charted on Wikipedia:
http://en.wikipedia.org/wiki/Comparison_of_Intel_processors4) To compare the graphics cards, I'm a bit at a loss. Look for reviews on pcmag.com, tomshardware.com, and gpureview.com or anywhere else you trust.
5) To compare everything else, you can read and understand the specs yourself. Stuff like RAM, HD space, wifi, etc is easy to figure out.
6) When you've narrowed the field to fewer than 6 candidates, try to find reviews for the specific laptop models you chose, or at least the model family. See if there are any glaring issues like crazy heat, worse than expected performance, spontaneous combustion, that sort of thing. Sometimes certain models will just be unusually lousy, and the only way to know is to own one yourself or hope somebody reviewed it.
Then you can compare prices on the brand webstores, ebay, amazon, their regional equivalents, and places like newegg or similar places in the UK.
Some more detailed personal recommendations:
Brand: Toshiba or HP Pro/Elitebook
Processor: Intel
i5 or
i7, which one doesn't much matter, the specs do (though i7 might be more efficient, and is more likely to be quad-core). Check the Wikipedia pages to see their exact specs. If you want one with a dual-core, probably should get at least 2.5GHz per core. For a quad-core, you can relax a bit on that, 2.2-2.3GHz per core. Either way, they'll run a bit warm. (Sorry, I don't know AMD, so you'd have to find their
wiki pages for info)
Graphics: If you get a quad-core i7, an
intelgrated GPU could actually work pretty well. The i5 in my 2760p runs FS2 very well, though I haven't done any intensive missions yet. Check the reviews and specs for whichever
discrete card is offered.
Memory: At least 6GB, 8-12 is better of course, but most machines you can add the rest if there's RAM slots open. That should be information on the computer specs page.
HD: You'd know best. 160GB at bare minimum, 320GB better, and so on...
Other features: good built-in wifi is so common in every single new machine, you almost don't have to check. You need 802.11 g/n at least. An HDMI-out port/Displayport is nice, but hardly necessary. Same for Firewire and ESATA, unless you use those to hook up your external HDs.