Thinking of purchasing 675xl today...Any thoughts, concerns, advice about these specs

Hello all. I've been reading these boards for a while trying to make a decision on a new laptop and I think I'm leaning towards this one. Please let me know what you think. I'll primarily use it to play games, EQ, EQII, Rainbow Six, etc., and for doing some work from the house. I also had a few questions I was hoping someone might help with?

1) Will going with 2048mb RAM instead of the standard 1024mb RAM make a considerable performance improvement?

2) I noticed Dell offers a Radeon with 256mb verses Gateway's Radeon 128mb. Is the 256mb card that much superior and would I be better off with the Dell?

3) I'm concerned about the 5400rpm HD but I don't have the option to go with the 60gb 7200rpm HD with this model and setup. Will it make a huge performance difference?

Sorry for all the questions! Thanks in advance!

Item: Gateway M675XLb

PRODUCT DETAILS
Operating System Microsoft® Windows® XP Professional
Application Software Microsoft® Works 8.0
AntiVirus Software Norton AntiVirus Software 90 day Introductory Offer
Processor Intel® Pentium® 4 Processor 3.4GHz with Hyper-Threading Technology
Memory 2048MB 400MHz DDR SDRAM (2-1024MB modules) ........[ +US$580.00]
Hard Drive 80GB 5400rpm Ultra ATA hard drive
Floppy Drive Modular 6-in-1 memory card reader
Optical Drive Modular 4x DVD±R/±RW/CD-RW recorder
Extended Service Plan Including Limited Warranty Notebook Value Service Plan -- 1 year part/labor/no on-site/1 year technical support
Expansion Slots One type II PC card slot
External Ports (4) USB 2.0, IEEE 1394 (FireWire), VGA, Parallel, TV Out, S-Video
Screen 17.1" High Resolution WSXGA+ TFT Active Matrix w/ ATI Mobility Radeon 9700 8x AGP w/ 128MB DDR video memory
Keyboard and Mouse Full-sized keyboard w/ integrated 10-key pad and EZ Pad® Pointing Device
Multimedia Package Integrated sound and stereo speakers, headphone/speaker jack, line-in and mic jacks
Speakers External speakers not selected
Battery High-capacity lithium ion battery with AC pack and 1 yr. limited battery warranty
Modem Integrated V.92 56K modem
Network Adapter Integrated 10/100/1000 Gigabit Ethernet
Internet Service Provider Six months America Online® Internet access
Integrated Wireless Networking Adapter Integrated 802.11b/g wireless networking card
Part Number 1008153

Sub Total: $3,379.99
Estimated Tax: $282.07
Shipping & Handling: $39.00
Coupon Savings: $0.00
Total: $3,701.06

Thanks again!

Thank you for your reply. So it's not worth spending the money on the extra RAM?

Thanks Snip. I've been looking at the Sager notebooks too. Seems to be about a grand less and I would get the 256mb Radeon. I've read great reviews. Any experience with Sager anyone?