Need help for building a gaming computer

[hototo]

Hi guys , i need a computer that can run dota 2 on high settings and with good fps and still be able to stream at the same time . My budget are below $1000.

 

[DarkSable]

This'll do what you're looking for. Slightly over budget, but you can drop the optical drive and install windows from a USB stick.

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i7-3770 3.4GHz Quad-Core Processor ($284.99 @ NCIX US)
Motherboard: ASRock H77 Pro4/MVP ATX LGA1155 Motherboard ($82.55 @ Newegg)
Memory: G.Skill Ripjaws Series 8GB (2 x 4GB) DDR3-1600 Memory ($62.99 @ Newegg)
Storage: Samsung 840 Series 120GB 2.5" Solid State Disk ($89.99 @ NCIX US)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($69.99 @ NCIX US)
Video Card: Sapphire Radeon HD 7870 XT 2GB Video Card ($234.99 @ Newegg)
Case: BitFenix Ghost (Black) ATX Mid Tower Case ($79.99 @ NCIX US)
Power Supply: SeaSonic G 550W 80 PLUS Gold Certified ATX12V / EPS12V Power Supply ($89.99 @ Newegg)
Optical Drive: Samsung SH-224BB DVD/CD Writer ($16.98 @ Outlet PC)
Total: $1012.46
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-04-11 17:04 EDT-0400)

 

[hototo]

Can i take Intel Core i5 3570k instead of intel core i7 3770 ?

 

[DarkSable]

Can i take Intel Core i5 3570k instead of intel core i7 3770 ?

Yes, and I'd normally recommend it over an i7 any day, because there won't be a difference in gaming between the two, but if you do stream a lot, the hyperthreading (the only thing the i7 has that the i5 doesn't) will help.

However, if you want to stay in budget, the i5 is a great choice - keep in mind, however, that buying the 3570k won't let you overclock unless you ALSO buy a z77 motherboard (I suggest the AsRock z77 Extreme 4) and an aftermarket CPU cooler. (I suggest the Hyper 212 EVO.)

 

[hototo]

what do you think about this build ? Can this build run on high settings with good fps and stream ?
CPU: Intel Core i5 3570k
Motherboard: Gigabyte Z77X-UD3H
Memory: 8GB Corsair Vengeance 1600MHz DDR3 Low Profile 1.5v
GPU: EVGA GeForce GTX 670 FTW
Case: Antec One Computer Case
Hard Drive: OCZ Vertex 4 128GB SSD
Optical Drive: OEM DVD Drive or OEM Blu Ray Drive
PSU: Corsair TX650 V2
CPU Cooler: Cooler Master Hyper 212 Plus
OS: Windows 7 Home Premium 64 bit