Custom Gaming PC Build Need Advice

[ViZxR3zolve]

Here it is:

COOLER MASTER HAF 912 RC-912-KKN1 Black SECC/ ABS Plastic ATX Mid Tower Computer Case

ASRock Z68 Extreme3 Gen3 LGA 1155 Intel Z68 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard

PowerColor AX7950 3GBD5-2DH Radeon HD 7950 3GB 384-bit GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support Video Card

OCZ ModXStream Pro 600W Modular High Performance Power Supply compatible with Intel Sandybridge Core i3 i5 i7 and AMD Phenom

Intel Core i5-2500K Sandy Bridge 3.3GHz (3.7GHz Turbo Boost) LGA 1155 95W Quad-Core Desktop Processor Intel HD Graphics 3000 BX80623I52500K

Western Digital Caviar Black WD1002FAEX 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive

G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-8GBXL

ASUS 24X DVD Burner - Bulk 24X DVD+R 8X DVD+RW 12X DVD+R DL 24X DVD-R 6X DVD-RW 16X DVD-ROM 48X CD-R 32X CD-RW 48X CD-ROM Black SATA Model DRW-24B1ST/BLK/B/AS - OEM

COOLER MASTER Hyper 212 EVO RR-212E-20PK-R2 Continuous Direct Contact 120mm Sleeve CPU Cooler Compatible with latest Intel 2011/1366/1155 and AMD FM1/AM3+

Total Cost - About 1000$

I would like to know if everything is compatible with one another
If this a a bottleneck PC because im not really sure
if you have any suggestions for me that will improve my gaming performance
If the case is good for airflow and quality
And last, should i upgrade my chipset to a z77 and I5-2500k to a i5-3570k ivy bridge, will this enhance my gaming performance noticeably

Thanks

[Deleted]

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($189.99 @ Microcenter)
Motherboard: ASRock Z77 Extreme4 ATX LGA1155 Motherboard ($124.99 @ Newegg)
Memory: G.Skill Sniper Low Voltage Series 8GB (2 x 4GB) DDR3-1600 Memory ($51.99 @ Newegg)
Hard Drive: Western Digital Caviar Blue 500GB 3.5" 7200RPM Internal Hard Drive ($67.99 @ SuperBiiz)
Hard Drive: Crucial M4 128GB 2.5" Solid State Disk ($119.00 @ B&H)
Video Card: XFX Radeon HD 7870 2GB Video Card ($317.55 @ Newegg)
Case: Corsair 400R ATX Mid Tower Case ($89.99 @ Microcenter)
Power Supply: OCZ 700W ATX12V / EPS12V Power Supply ($52.80 @ NCIX US)
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer ($17.99 @ Newegg)
Total: $1032.29
(Prices include shipping and discounts when available.)
(Generated by PCPartPicker 2012-06-06 16:46 EDT-0400)

I would not recommend going for a $1000 build without an SSD. This one might get around 5 FPS less, but all loadscreens and such will go extremely much faster. Also, I'd recommend going with the Ivy Bridge and a Z77 motherboard.

Edit: forgot about heatsinks! Budget one's: Corsair CAFA50, Xigmatek Gaia, Cooler Master Hyper 212. More expensive one's: NZXT Havik-140, Thermaltake Frio, Noctua NH D-14, Corsair H100.

[Plagiarizer]

I would like to know if everything is compatible with one another
If this a a bottleneck PC because im not really sure
if you have any suggestions for me that will improve my gaming performance
If the case is good for airflow and quality
And last, should i upgrade my chipset to a z77 and I5-2500k to a i5-3570k ivy bridge, will this enhance my gaming performance noticeably

Thanks

FYI HAF in the case name means High Air Flow so youre good on that point
upgrading the chipset and processor to the next tier should give you a minor difference. i dont know if it would be noticeable or not as i have never had a 2500k.
i recently built a computer with the Z77 and 3570k; i chose those because the Z77 chipset and ivy bridge had newer technology that interfaces better with PCI-e 3.0 so you getter more bandwidth between the CPU and GPU.

everything looks to be compatible and no real bottlenecks that i can see