laptop for 3d work

hello ,

i am confused between these laptops ,plz tell me which laptop should i go for

and between these, any laptop will be good for 3d work or not.

dell's config:

Intel? Core? i5-460M Processor (2.53GHz, 2Core/4Threads, turbo up to 2.8GHz, 3M cache)

1GB NVIDIA? GeForce? GT 420M graphics with Bluetooth (with WIDI)

4GB 1333MHz DDR3 SDRAM (1 x 4G) (operates at 1066MHZ for Core i5 processors)

increasing RAM will make things faster or not.


asus config:

Intel? Core? i5 Processor 450M(2.4G, 3M) : GHz

Video Graphics & Memory NV GT325M 1GB DDR3 VRAM

Main Memory 4 GB DDR3 1066

Display 16" HD (1366x76 7" WVGA (touch panel/sun readable)


hp config:

Intel? Core? i5-450M Processor
? 2.4 GHz
Chipset
Intel? HM55

4 GB DDR3 (2 x 2048 MB)

ATI Mobility Radeon? HD 5650 Graphics (switchable) with 1 GB dedicated


thanks