Is this a good start?

[cyberia]

Is this a good start for a £250 - £350 PC for low level gaming ( mainly Source powered games like TF2 or Counter Strike Source/GO )

Motherboard - Gigabyte GA-H61MA-D2V GEN3
CPU - Intel CPU Pentium G840 Socket 1155 Dual Core Processor
GPU - Gigabyte NVIDIA GT 640 HD Series Graphics Card - 2GB
RAM - Corsair Memory XMS3 4GB DDR3 1333 Mhz CAS 9 Dual Channel Desktop, Times 2, so totaling 8GB
PSU - Powercool PSUPC450AUBAM 450W Modular Power Supply
Harddrive - Seagate 500Gb 3.5" Barracuda Hard Drive 7200rpm 16MB Cache

And does anyone know if all these will be compatible with this case?

 

[Garpatron]

Yes, You did an ok job of picking the parts out and yes they should all fit in the case

 

[tiny voices]

This build won't get you very far. I would definitely go with an a10/a8 and a 6670. Also, only buy a PSU from a reputable company. Check out Antec, xfx, corsair, seasonic.

 

[tiny voices]

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: AMD A10-5800K 3.8GHz Quad-Core Processor (£86.99 @ Overclockers.co.uk)
Motherboard: ASRock FM2A75M-DGS Micro ATX FM2 Motherboard (£51.61 @ Amazon UK)
Memory: G.Skill Ripjaws X Series 4GB (2 x 2GB) DDR3-1600 Memory (£19.34 @ Aria PC)
Storage: Western Digital Caviar Blue 500GB 3.5" 7200RPM Internal Hard Drive (£43.96 @ CCL Computers)
Video Card: Gigabyte Radeon HD 6670 1GB Video Card (£48.78 @ Scan.co.uk)
Case: Cooler Master Elite 371 ATX Mid Tower Case (£29.94 @ Aria PC)
Power Supply: XFX ProSeries 450W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply (£36.98 @ Novatech)
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer (£12.98 @ Scan.co.uk)
Total: £330.58
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2012-12-26 19:09 GMT+0000)

 

[nix327]

Is this a good start for a £250 - £350 PC for low level gaming ( mainly Source powered games like TF2 or Counter Strike Source/GO )

Motherboard - Gigabyte GA-H61MA-D2V GEN3
CPU - Intel CPU Pentium G840 Socket 1155 Dual Core Processor
GPU - Gigabyte NVIDIA GT 640 HD Series Graphics Card - 2GB
RAM - Corsair Memory XMS3 4GB DDR3 1333 Mhz CAS 9 Dual Channel Desktop, Times 2, so totaling 8GB
PSU - Powercool PSUPC450AUBAM 450W Modular Power Supply
Harddrive - Seagate 500Gb 3.5" Barracuda Hard Drive 7200rpm 16MB Cache

And does anyone know if all these will be compatible with this case?

I've included a case if you do not already own that case you linked.

PCPartPicker part list: http://pcpartpicker.com/uk/p/uhG9
Price breakdown by merchant: http://pcpartpicker.com/uk/p/uhG9/by_merchant/
Benchmarks: http://pcpartpicker.com/uk/p/uhG9/benchmarks/

CPU: Intel Pentium G860 3.0GHz Dual-Core Processor (£47.94 @ Aria PC)
Motherboard: ASRock H77M Micro ATX LGA1155 Motherboard (£62.99 @ Amazon UK)
Memory: G.Skill Ripjaws X Series 4GB (2 x 2GB) DDR3-1600 Memory (£19.34 @ Aria PC)
Storage: Seagate Barracuda 500GB 3.5" 7200RPM Internal Hard Drive (£35.94 @ Aria PC)
Video Card: MSI Radeon HD 7770 GHz Edition 1GB Video Card (£85.00 @ Amazon UK)
Case: NZXT Source 210 (White) ATX Mid Tower Case (£31.18 @ Scan.co.uk)
Power Supply: Corsair Builder 430W 80 PLUS Certified ATX12V Power Supply (£35.32 @ Scan.co.uk)
Total: £317.71
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2012-12-26 21:51 GMT+0000)

Edit: 2gb vram on a budget gpu does not really make any sense as it won't give you any real hike in performance..

 

[cyberia]

Thanks for the responses, I'll have a deeper think about what I'm going to get

 

[cyberia]

I finally settled on this, All the parts have arrived and I've assembled it.

Intel Pentium Dual Core G860. Sandy Bridge. 3GHz 3MBsmart cache - £49
500GB Seagate Barracuda SAT 6Gb/s - £40
NZXT Source 210 White mid tower - £25
G.Skill RipjawX 4GB ( 2x2GB) - £22
Corsair Builder 80+ bronze 430 watt PSU - £39
Asus Nvidia GeForce GT 640 Graphics Card (2GB DDR3, PCI Express 3.0 - £81
ASRock H77M Motherboard - £63

However, when I turned on the power switch at the back I heard a small electrical noise for about a second then nothing happened. I've tried switching power cables and plug sockets but nothing I try works. I've plugged in both the power cables from the PSU into the motherboard ( The big one and the small one for the CPU, not very PC adept I'm afraid lol ). Any one have any idea why my PC isn't starting/getting no power? Thanks

EDIT : The PSU also came with a cable for the PSU, however the plug is for an American socket, none that I have in my house. Do I simply need an adapter?

 

[cyberia]

Tested the power supply in an old PC and it started so it's not the PSU. Is there anything I could have missed in the motherboard, CPU area?