Will these specs be ok for what I do?

I'm most likely going to buy an m11x (m15x looks good to me, but doesn't have the portability I need, and is out of my price range).

Specs:
Intel® Core™ i7 640UM (4M Cache, 1.2 GHZ with 2.266 GHz Max Turbo Frequency) - Overclockable
4GB Dual Channel DDR3 at 800MHz
320GB SATAII 7,200RPM
1GB NVIDIA® GeForce® GT 335M

Will the above specs allow me to multi-task with these without lag?:
-Photoshop CS5
-Corel Painter 11
-Blender3D 2.49 and 2.5

I do a lot of 3D modeling, rendering, and digital painting. I have external monitors at home, so screen size is not an issue at all... I'm just concerned about the performance. I travel quite often, and I'll be going to college this year, so that's why I need the portability. I have a desktop (iMac 20") at home, which is starting to slow (with all the multi-tasking I do), so I'm hoping the m11x can take at least some of the workload (and some gaming, like Dragon Age: Origins, or the upcoming Brink).

 

yes perfectly fine. You can go with 8gb if you really want to.

 

Perfectly. As for the 8 GB, I don't suggest it.
You really don't need a full 8 GBs, unless you are multi tasking like heck.

EDIT: I SERIOUSLY NEED TO READ MORE CAREFULLY....
8 GB would be suggested, as you are gonna be multi tasking.
I also suggest (if you can) get an SSD, as it will help load those programmers faster.

 

Can the RAM be upgraded later? sorry, newbie here

 

Yes, the RAM can be upgraded later.
In fact, it's actually just a matter of removing the bottom cover(about 7-9 screws) to get to the RAM.
YouTube - Alienware M11x Teardown **READ SAFETY PRECAUTIONS PRIOR TO REPLACING PARTS** (Official Video)

 

sweet! thank you. I'll just see how 4gb works first. Now I just have to order it tonight!

cannot wait

 

Now before you pull the trigger though, I hope you know about the hinge issue.
As you may, or may not know, after 4-5 months of usage, quite a few people have reported that there hinges break. Now while this is covered by even the basic warranty(Dell will send a new screen, or even a replacement system), this can be a bit of a inconvenience. Now for me, it doesn't really doesn't bother me, as I don't mind the inconvenience of calling up dell and asking for a fix, but it may bother others.

Just something I thought you best be aware of before buying it.

 

Oh yeah, I read about that... as long as it's covered in the warranty, I'm ok with it. Thanks for the heads up though.