Do you need an operating system? Peripherals? 1090 what? Country? Games you're playing?
Edit: Oh well, OP logged off, gonna make a few builds based on the assumption he's from US.
With an operating system, no peripherals:
PCPartPicker part list /
Price breakdown by merchant /
Benchmarks
CPU: Intel Core i5-4670K 3.4GHz Quad-Core Processor ($199.99 @ Microcenter)
CPU Cooler: Corsair H60 54.0 CFM Liquid CPU Cooler ($49.99 @ NCIX US)
Motherboard: Asus Z87-A ATX LGA1150 Motherboard ($135.99 @ NCIX US)
Memory: GeIL EVO Veloce Series 8GB (2 x 4GB) DDR3-1600 Memory ($53.99 @ Newegg)
Storage: Samsung 840 Series 120GB 2.5" Solid State Disk ($90.99 @ Amazon)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($59.98 @ Outlet PC)
Video Card: Gigabyte GeForce GTX 760 2GB Video Card ($259.99 @ Amazon)
Case: Corsair 300R ATX Mid Tower Case ($49.99 @ Newegg)
Power Supply: XFX 550W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($29.99 @ Newegg)
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer ($14.99 @ Newegg)
Operating System: Microsoft Windows 8 (OEM) (64-bit) ($88.90 @ Amazon)
Total: $1034.79
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-08-12 21:21 EDT-0400)
Without an operating system, no peripherals:
PCPartPicker part list /
Price breakdown by merchant /
Benchmarks
CPU: Intel Core i5-4670K 3.4GHz Quad-Core Processor ($199.99 @ Microcenter)
CPU Cooler: Corsair H60 54.0 CFM Liquid CPU Cooler ($49.99 @ NCIX US)
Motherboard: Asus Z87-A ATX LGA1150 Motherboard ($135.99 @ NCIX US)
Memory: GeIL EVO Veloce Series 8GB (2 x 4GB) DDR3-1600 Memory ($53.99 @ Newegg)
Storage: Samsung 840 Series 120GB 2.5" Solid State Disk ($90.99 @ Amazon)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($59.98 @ Outlet PC)
Video Card: Gigabyte GeForce GTX 770 2GB Video Card ($399.99 @ Microcenter)
Case: Corsair 300R ATX Mid Tower Case ($49.99 @ Newegg)
Power Supply: XFX 550W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($29.99 @ Newegg)
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer ($14.99 @ Newegg)
Total: $1085.89
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-08-12 21:22 EDT-0400)
With an operating system and peripherals (not sure about mouse and keyboard, left 30$ for them):
PCPartPicker part list /
Price breakdown by merchant /
Benchmarks
CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($189.99 @ Microcenter)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.99 @ Microcenter)
Motherboard: MSI Z77A-G43 ATX LGA1155 Motherboard ($94.98 @ SuperBiiz)
Memory: GeIL EVO Veloce Series 8GB (2 x 4GB) DDR3-1600 Memory ($53.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($59.98 @ Outlet PC)
Video Card: Gigabyte GeForce GTX 760 2GB Video Card ($259.99 @ Amazon)
Case: Corsair 300R ATX Mid Tower Case ($49.99 @ Newegg)
Power Supply: XFX 550W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($29.99 @ Newegg)
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer ($14.99 @ Newegg)
Operating System: Microsoft Windows 8 (OEM) (64-bit) ($88.90 @ Amazon)
Monitor: Asus VE248H 24.0" Monitor ($169.99 @ Newegg)
Total: $1042.78
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-08-12 21:25 EDT-0400)
Without an operating system and with peripherals (again, not sure about mouse and keyboard, still left 30$)
PCPartPicker part list /
Price breakdown by merchant /
Benchmarks
CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($189.99 @ Microcenter)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.99 @ Microcenter)
Motherboard: MSI Z77A-G43 ATX LGA1155 Motherboard ($94.98 @ SuperBiiz)
Memory: GeIL EVO Veloce Series 8GB (2 x 4GB) DDR3-1600 Memory ($53.99 @ Newegg)
Storage: Samsung 840 Series 120GB 2.5" Solid State Disk ($90.99 @ Amazon)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($59.98 @ Outlet PC)
Video Card: Gigabyte GeForce GTX 760 2GB Video Card ($259.99 @ Amazon)
Case: Corsair 300R ATX Mid Tower Case ($49.99 @ Newegg)
Power Supply: XFX 550W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($29.99 @ Newegg)
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer ($14.99 @ Newegg)
Monitor: Asus VE248H 24.0" Monitor ($169.99 @ Newegg)
Total: $1044.87
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-08-12 21:27 EDT-0400)