Best laptop for recording games

I'm assuming there is no built in recording capability in WoW because it would be better to use it and then go back with fraps while you werent actually playing the game...
My 6800 ultra coupled with a 2.0 P-M was able to "encode" pre-recorded in-game footage at about 30 fps constant at 1920 x 1200 using fraps @ half resolution setting. You really wouldnt want to go over 960 x 600 @ 30 fps for sake of file size even after encoding it. I now have a 7950 GTX and 2.16 C2D. I can tell you how it performs after the weekend.

I had a 7200 rpm drive and the files it creates are quite large but I am not sure of the MB/s transfer rate to the HD.

lot of ram and a fast hard drive.

if you record in 24bit bmp its gonna need alot of disk access if you record in a compressed video format such as divx its gonna need more cpu. same with audio its PCM un encoded again more disk space less cpu or say mp3 compressed again slightly less disk usage more cpu power.
all gets written to disk all goes through ram so the more and faster the better.

you could record sound seperately on an external source such as cd recorder etc and use editor to later dub it back in would reduce hard drive usage. If you get a dedicated sound card it will reduce reource use on cpu and subsystems but make sure it does and find the one that uses the least resources of the ones possible sound can if i remeber rightly be sround 5-15% resource use

If you have spare GPU resources you can clone and have it go to an svga out you could record it on video or cd dvd recorder, or output to another PC /laptop so the the machie playing the game isnt so taxed.

If yuor making a dedicated laptop to record games ideally dual drive if the file goes over a couple of hundred meg its gonna have to start writting to disk and hard disks are generally pretty slow. Hdd generally between 10mb-80mb R/W speeds 80mbs would be good enough but i achieved that with raid 10krpm drives in a pc though with modern laptops it seems possible as lappy with 2x7200rpm probably 2x100GB or2x160GB in raid0 with 2GB Ram and a 7900gs+, would be able to do decent medium quality of maybe even battle field2, maybe , though WoW dosnt take too much resources if you ballance it right you might get a low medium res video @ 30 fps with a single 7,200/2Gb/7900GS+.

A dvd recorder might be good relatively cheap now you could use it to record both video and or sound leaving fraps to cope only with video thus upping the quality of video and full quality sound.

Also i havent tried them so no idea if they work or ork well but i am aware you can get boxes with svideo inputs etc tht encode divx in real time for around 100 squids in the end if you can take the recording off the laptop you can use it for gaming.

hope any of that helps