Just out of curiosity I thought I'd spec a custom build against a retailer to see the price difference. OK, the company I looked at provides extreme gaming rigs at extreme prices (not sure I can mention its name?). But its a well known online company, with an extra-terrestrial trademark (I can hint cant I?)
Anyway, the gaming rig came to £2999.99 (inc VAT) as follows:
Processor: Intel® Core™ i7-940 Performance 2.93GHz 8MB Cache
Chassis : "Company" Chassis - Silver
Lighting: System Lighting - Blue
Cooling: High-Performance Liquid Cooling
Acoustic Dampening: None
Power Supply: 1000 Watt Multi-GPU Approved Power Supply - UK Powercord
Graphics Processor : 1GB NVIDIA® GeForce® GTX 280
Memory: 3GB DDR3 SDRAM at 1600MHz - 3 x 1024MB
Motherboard: Intel® X-58 Chipset Motherboard- Socket 1366 Core i7 Ready, Triple Channel DDR3 Memory
Operating System: Genuine Windows Vista® Home Premium 64-bit - English
System Drive: Extreme Performance (RAID 0) - 1.0 TB SATA 3Gb/s 7200 RPM (2 x 500GB)
Optical Drives: Single Drive Configuration - 20X Dual Layer DVD±RW/CD-RW Writer
Sound Hardware: High-Definition 7.1 Performance Audio - Standard
Monitor: (None)
Keyboard: Logitech® Classic Keyboard UK - Space Black
Mouse: Standard Optical 3-Button Mouse with Scroll Wheel
Warranty: 1-Year Free Phone 24/7 and Collect & Return
And then I specced a roughly equivelant system on OCUK, which came to £2192.79 (inc VAT)
This is a saving of nearly £1000, which I find astonishing. That is providing you are willing, and able to build the system yourself. I found this good to know, as I've only ever bought pre-built PCs in the past.
Anyway, the gaming rig came to £2999.99 (inc VAT) as follows:
Processor: Intel® Core™ i7-940 Performance 2.93GHz 8MB Cache
Chassis : "Company" Chassis - Silver
Lighting: System Lighting - Blue
Cooling: High-Performance Liquid Cooling
Acoustic Dampening: None
Power Supply: 1000 Watt Multi-GPU Approved Power Supply - UK Powercord
Graphics Processor : 1GB NVIDIA® GeForce® GTX 280
Memory: 3GB DDR3 SDRAM at 1600MHz - 3 x 1024MB
Motherboard: Intel® X-58 Chipset Motherboard- Socket 1366 Core i7 Ready, Triple Channel DDR3 Memory
Operating System: Genuine Windows Vista® Home Premium 64-bit - English
System Drive: Extreme Performance (RAID 0) - 1.0 TB SATA 3Gb/s 7200 RPM (2 x 500GB)
Optical Drives: Single Drive Configuration - 20X Dual Layer DVD±RW/CD-RW Writer
Sound Hardware: High-Definition 7.1 Performance Audio - Standard
Monitor: (None)
Keyboard: Logitech® Classic Keyboard UK - Space Black
Mouse: Standard Optical 3-Button Mouse with Scroll Wheel
Warranty: 1-Year Free Phone 24/7 and Collect & Return
And then I specced a roughly equivelant system on OCUK, which came to £2192.79 (inc VAT)

This is a saving of nearly £1000, which I find astonishing. That is providing you are willing, and able to build the system yourself. I found this good to know, as I've only ever bought pre-built PCs in the past.