Concerns with first gaming rig build!

[Sakaki]

I'm looking to build myself a gaming rig, with the parts below. 

 

 

CPU: Intel Pentium G3258 3.2GHz Dual-Core Processor  

CPU Cooler: Noctua NH-D15 82.5 CFM CPU Cooler  

Motherboard: Asus Z97-K/CSM ATX LGA1150 Motherboard

Memory: Corsair Vengeance LP 8GB (2 x 4GB) DDR3-1600 Memory 

Storage: Samsung 840 EVO 250GB 2.5" Solid State Drive  

Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive  

Video Card: Asus Radeon R9 290 4GB DirectCU II Video Card 

Case: Cooler Master HAF XM (Black) ATX Mid Tower Case  

Power Supply: SeaSonic 650W 80+ Gold Certified Fully-Modular ATX Power Supply  

Additional Fans: Noctua NF-A14 140MM PWM Fan

 

http://www.cybermind.com.sg/pdf-upload/pricelists/cybermind.pdf

 

I'm from Singapore and my budget is about SGD1,600. This build costs me about SGD1621, but I'm sure I can get a few bucks off.

 

I won't be playing much graphics-intensive games like BF4, but more of Dota2, Diablo3 and maybe FFXIV AAR.

 

I intend to move the 200mm that comes together with the HAF-XM and use it at the side panel, while using a couple of Noctua NF-A14 fans at the top for exhaust.

 

The G3258 is a place-holder for the upcoming Broadwell and I intend to overclock it as well. 

 

I also intend to overclock the R9 290, and my concern is with the PSU. I'm wondering if the 650W PSU is able to provide the power for overclocking and stuff.

 

Also, will there be any compatibility issues? Will take any advice into serious consideration

 

[Mooshi]

For a single GPU set up, a 650w unit is more than enough, actually. If you plan on sticking to a single card, you're fine.

 

I must say, it's kinda silly using such a beast cooler for a Pentium, even if it is a place holder.

[Vacsol]

overclock the Pentium and you might decide not to even upgrade to broadwell