can u guys tell me what is the difference for these two laptop specs?

ACER ASPIRE 4540-522G32

AMD TURION X2 Dual Core Mobile M520
(2.30GHz, 1MB L2 Cache, 800MHz FSB);
Genuine Windows 7 Home Premium 64-bit;
1GB of DDR2 667 MHz Memory;
320GB Hard Disk Drive;
AMD M880G Chipset
14″ HD 1366×768 pixel resolution, high-brightness (200-nit) Acer CineCrystal LED-backlit TFT LCD
ATI Radeon HD 4200 Integrated Graphics with up to 2048MB of HyperMemory
Integrated 56 Kbps modem & 10/100/100 mbps LAN

DELL INSPIRON 14 (1003I1440CLRDOS6600)
Intel(R) Core(TM) 2 Duo Processor T6600;
(2.2GHz, 800MHz FSB, 2M);
FreeDos;
14.0 ” High Definition (1366×768) LED Display with TrueLife(TM)
3GB (1X1GB+1X2GB) 667MHz Dual Channel DDR2 SDRAM;
320GB 5400RPM SATA Hard Drive;
Intel(R) Graphics Media Accelerator X4500HD;

im more into games and movies…which one should i buy?

I really need your help. I want to buy a new graphics card(nothing too expensive since I’m only going to be playing Counter Strike and Gmod and possibly TF2). I found what appears to be a good deal 75$ for a JATON Video-228PCI-Twin GeForce FX 5200 128MB 64-bit DDR PCI Video Card. I was wondering if i should get it because it doesn’t seem like it would have trouble running those games. Thanks in advance.
I found it on newegg.com
Found a different one for $70 should i get this 1 instead?
Diamond Stealth® S9250 Radeon™ 9250 PCI 256MB Graphics Card

I have used the tuner at my house for regular tv, but not sure how to connect it to the cable. I tried to connecting it with the provided adapter, but doesn’t seem to work.