What do you think about my build?

Basically both compatibility notes are about the case. That case has no front USB 3.0 connectors and so the USB headers on the Motherboard will have no where to plug into.

Basically, your best option is to choose a case with USB 3.0 front connectors.
 
It means that your case dont have USB 3.0 port on the front but your motherboard has option to connect USB 3.0 connector for front panel so if your case had front USB 3.0 port you could connect it to the motherboard so it would work

Does this fit your budget ?

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4460 3.2GHz Quad-Core Processor ($176.95 @ SuperBiiz)
Motherboard: ASRock H97 Anniversary ATX LGA1150 Motherboard ($69.89 @ OutletPC)
Memory: A-Data XPG V1.0 8GB (2 x 4GB) DDR3-1600 Memory ($42.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($52.49 @ OutletPC)
Video Card: Asus GeForce GTX 970 4GB STRIX Video Card ($319.99 @ SuperBiiz)
Case: Thermaltake Versa H24 ATX Mid Tower Case ($20.00 @ Newegg)
Power Supply: XFX Core Edition 650W 80+ Bronze Certified ATX Power Supply ($39.99 @ Newegg)
Total: $722.30
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-07-11 08:37 EDT-0400


why i changed things

i picked a bit weaker i5 so i could fit GTX 970
you dont need Z97 chipset motherboard if you wont OC, you cant OC with non K CPUs
cheaper RAM that will perfrom the same
Better GPU
Cheaper case to fit GTX 970
Your PSU was low quality, the one i picked is very good quality
 


Well that might be a problem, I changed the case in my build to the Cooler Master N300. http://pcpartpicker.com/p/T2V9dC
No compatibility notes whatsoever. Is it fine?
 


Well that might be a problem, I changed the case in my build to the Cooler Master N300. http://pcpartpicker.com/p/T2V9dC
No compatibility notes whatsoever. Is it fine?
 
As others have said, your motherboard has USB 3.0 headers, but your case only has USB 2.0 ports on the front. You'll still have USB 3.0 on the back, but it can be nice to use your fast ports without reaching around to the back of your case. What were your reasons for picking that case? Most cases designed in the last 2 or 3 years have front USB 3.0 ports and you can find some decent cases under $70.

I also agree with the H97 suggestion. unless there was a particular reason for the Fatal1ty.

Turbopiki is right about the power supply. It's not that great, and you can get better PSUs for less money.

He also has a point about the video card, Unfortunately, both AMD and nVidia seem to have abandoned the $250 "sweet spot" card. The 280X is fine if you can get a good deal, but stretching to a GTX 970 or an R9 390 would deliver a lot of performance. It seems the $330 level is now where you get the most bang for your buck.

One final note, I didn't see an SSD. If you're going for a bang for the buck computer, I would at least include a 256 GB SSD at around $100, for the OS and games. If you're really strapped, a 128 GB one would do, and those run around $50.
 
I'm assuming you already purchased that R9 280X since there's no price on it? I also changed the MB to a H97 since you have a locked CPU and got a PSU that will support Crossfire (MB supports as well).

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4690 3.5GHz Quad-Core Processor ($214.99 @ NCIX US)
Motherboard: ASRock H97 PERFORMANCE ATX LGA1150 Motherboard ($79.99 @ Newegg)
Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory ($64.99 @ Amazon)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($52.49 @ OutletPC)
Video Card: Gigabyte Radeon R9 280X 3GB WINDFORCE Video Card
Case: Cooler Master N300 ATX Mid Tower Case ($49.99 @ Newegg)
Power Supply: EVGA 750W 80+ Bronze Certified Semi-Modular ATX Power Supply ($54.99 @ NCIX US)
Total: $577.44 BEFORE $60 MIR
 


Sadly, prices here in Bulgaria vary extremely. It's not near my budget, it goes around 2000 Bulgarian Levs when my budget goes around 1500. Still a great build
 
CPU: http://www.stealtech.org/cpu/INTEL_Core_I5-4460_3_2G_6MB_BOX_LGA1150_id45728/
RAM: http://www.stealtech.org/ram/KINGSTON_HYPER_FURY_8G_DDR3_1600_id44951/
MoBo: http://www.stealtech.org/dunni_platki/ASROCK_H97M_ANNIVERSARY_1150_id52326/
GPU: http://www.stealtech.org/video/GIGABYTE_R928XOC-3GD_R9_280X_3G_D5_id46085/
HDD: http://www.stealtech.org/hard_drives/WD_1TB_SATAIII_Caviar_Blue_7200rpm_64MB_id30676/
PSU: http://www.stealtech.org/zahranvane/SEASONIC_SS-620GB_BRONZE_id44969/
Case: http://www.stealtech.org/kutii/RAIDMAX_HORUS_322_id53407/

TOTAL: 1,450.69 BGN

This is the best i can do with your budget, you can spend the rest 50 BGN on a bit better CPU i5 4590.

Dont know how did you manage to get parts from PCpartpicker link under 1500 BGN, because when i put all of that parts in the baske it came up to 1,707.70 BGN

If you can go up to 1700 BGN then i would get the build above but i would change R9 280X for http://www.stealtech.org/video/GIGABYTE_N970IXOC-4GD_-_GTX_970_id50402/