safir, i have been ordering ORIGIN Pc's, which some people say are a bit overpriced compared to soec'ing and buiding your own, but i have had great experiences with them. Check the specs page for updated specs.
You can get less expensive, but dont skimp on the Graphics card.
Here is what i got about 6 months ago. there are better components right now im sure. research difference between the new GeForce GTX 980 graphics card and the TITAN BLACK.
http://forum.lumion3d.com/general-discussion/gtx-980-or-titan-gpu/msg243061/#msg2430611 MILLENNIUM
Details
Orientation: Standard
Standard Color: Black
Current Special Offers: Memorial Day Special
The ORIGIN Difference: Truly Custom PC's. Want a component that is not on our site? Call or email us and we will include it in your system.
Variable Mounting: Standard
Case Lighting: Remote Controlled Multi-Colored LED
Case Fans: ORIGIN High-Performance Ultra Silent Fans - Black
Motherboard: Gigabyte GA-Z97X-SLI
System Cooling: ORIGIN FROSTBYTE 120 Sealed Liquid Cooling System
Processors: Intel Core i7 4790 Quad-Core 3.6GHz (4.0GHz TurboBoost)
Power Supply: 650 Watt Corsair RM650
Power Supply Sleeved Cable Color: Black Individually Sleeved Cables
Graphic Cards: Single 6GB NVIDIA GTX Titan Black
ORIGIN Professional Graphics Card Overclocking: FREE ORIGIN Professional Graphics Card Overclocking
Memory: 32GB Corsair Vengeance 1600Mhz (4x8GB)
Operating System: Genuine MS Windows 7 Professional 64-Bit Edition
Operating System Drive #1: 240GB ORIGIN PC Approved Solid State Drive
Operating System Drive #2: 1TB SATA 6.0Gb/s, 7200RPM, 32MB Cache
Hard Drive Cage: 5 Bay Hot-Swap Cage
Optical Drive One: 12X Blu-ray Reader and DVD Combo
Media Card Reader: 40-in-1 Media Card Reader
Audio: On Board Audio
Networking: Onboard Network Port
ORIGIN Maximum Protection Shipping Process: ORIGIN Wooden Crate Armor
Warranty: 3 Year Part Replacement and Free Shipping Warranty with Lifetime Labor/24-7 Support
ORIGIN Recovery: ORIGIN Recovery USB3.0 Flash Drive
Evolve Part Upgrade Service: No Part Upgrade Service
Free ORIGIN T-shirt: ORIGIN PC G8 T-Shirt XL
Web Browser: Microsoft Internet Explorer
Web Browser: Google Chrome
Subtotals: $3,836.69
Shipping: $166.90
Taxes: $0.00
Discount: $0.00
Total: $4,003.59