Good Gaming GPU? (GT 650M)

This is the laptop I have decided to buy but would like to know how good it is:

Specs:


Chassis & Display

Optimus Series: 17.3" Glossy Full HD LED Widescreen (1920x1080)



Processor (CPU)

Core™i7 Quad Core Mobile Processor i7-3610QM (2.30GHz) 6MB



Memory (RAM)

4GB KINGSTON HYPER-X GENESIS 1600MHz SODIMM DDR3 (2 x 2GB)


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Graphics Card

NVIDIA® GeForce® GT 650M - 1.0GB DDR5 Video RAM - DirectX® 11

(Do you guys think I should Overclock the GPU?)
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2nd Graphics Card

NONE



Memory - 1st Hard Disk

750GB WD SCORPIO BLACK WD7500BPKT, SATA 3 Gb/s, 16MB CACHE (7200 rpm)



2nd Hard Disk

NONE



1st DVD/BLU-RAY Drive

8x SATA DVD±R/RW/Dual Layer (+ 24x CD-RW)



Memory Card Reader

Internal 9 in 1 Card Reader (MMC/RSMMC/SD: Mini, XC & HC/MS: Pro & Duo)



Thermal Paste

ARCTIC MX-4 EXTREME THERMAL CONDUCTIVITY COMPOUND (£9)



Sound Card

Intel 2 Channel High Definition Audio + MIC/Headphone Jack



Network Facilities

GIGABIT LAN & WIRELESS INTEL® ULTIMATE-N 6300 (450Mbps)



USB Options

2 x USB 3.0 PORTS + 2 x USB 2.0 PORTS AS STANDARD



Battery

Optimus/Voyager Series 6 Cell Lithium-ION Battery (48.84WH)



Power Lead & Adaptor

1 x UK Power Lead & 120W AC Adaptor



Operating System

Genuine Windows 7 Home Premium 64 Bit w/SP1 - inc DVD & Licence
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Thank you