How to optimize this build?

[hhrrmm]

To whom it may concern:

My son is six, and really wants to start playing Minecraft. He is quite the little gamer, I bought him the Wii U last year, so I don't want to get him the xbox yet. Anyway, I figure it's a better value to buy him a PC to play the game and then he can learn about comps too. My budget is 550.00. I found this Asus at best buy for 450.00:

AMD A10-6700 Accelerated Processor with AMD Radeon HD 8670D graphics
Ensures optimal computing performance.
8GB DDR3 memory
, expandable to 16GB.
Multiformat DVD±RW/CD-RW drive
4MB cache memory
1TB Serial ATA hard drive (7200 rpm)
AMD Radeon HD 8670D graphics
Feature shared video memory for lush visuals. HDMI and VGA (D-sub) outputs enable flexible connectivity.
6-in-1 media reader
Supports Secure Digital, Secure Digital High Capacity, Memory Stick, Memory Stick PRO, xD-Picture Card and MultiMediaCard formats.

This seems like a good deal...Isn't the AMD A10 a really good CPU? My friend said the graphics card is low end. In case my son wants to play better games in the future should I buy a "gaming rig"?
I found this for arnd same price:

Avatar Gaming FX6161OC Desktop PC
AMD FX-Series Six-Core FX-6100 Processor 3.3 GHz (cache)
8GB DDR3, 1TB 7200 rpm Hard Drive
24X DVDRW Internal DVD Drive, USB Mouse, USB Keyboard
Graphics Card: GeForce 610 1GB, Windows 7 Home Premium 64-bit
350W Power Supply, 10/100/1000Mbps LAN

What is the better CPU?
Is it easy to change graphics card in Asus?

System requirements for Minecraft:


Minimum Requirements:
CPU: Intel Pentium D or AMD Athlon 64 (K8) 2.6 GHz
RAM: 2GB
GPU (Integrated): Intel HD Graphics or AMD (formerly ATI) Radeon HD Graphics with OpenGL 2.1
GPU (Discrete): Nvidia GeForce 9600 GT or AMD Radeon HD 2400 with OpenGL 3.1
HDD: At least 200MB for Game Core and Other Files
Java 6 Release 45

Recommended Requirements:
CPU: Intel Core i3 or AMD Athlon II (K10) 2.8 GHz
RAM: 4GB
GPU: GeForce 2xx Series or AMD Radeon HD 5xxx Series (Excluding Integrated Chipsets) with OpenGL 3.3
HDD: 1GB
Latest release of Java 7 from java.com

 

[DonkeyOatie]

Hello. At my middle school, I am putting together a course to have students build a computer to play Minecraft. This is one of the possible configurations

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i3-4150 3.5GHz Dual-Core Processor ($97.27 @ NCIX US)
Motherboard: ASRock H97M-ITX/AC Mini ITX LGA1150 Motherboard ($82.98 @ Newegg)
Memory: Team Zeus Red 8GB (2 x 4GB) DDR3-1600 Memory ($70.98 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($50.49 @ OutletPC)
Case: Thermaltake Core V1 Mini ITX Tower Case ($39.99 @ Newegg)
Power Supply: Antec 450W ATX Power Supply ($29.99 @ Newegg)
Total: $371.70
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-12-06 20:12 EST-0500

This another.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i3-4150 3.5GHz Dual-Core Processor ($97.27 @ NCIX US)
Motherboard: ASRock H97M PRO4 Micro ATX LGA1150 Motherboard ($82.98 @ Newegg)
Memory: G.Skill Sniper 8GB (2 x 4GB) DDR3-1600 Memory ($78.98 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($50.49 @ OutletPC)
Case: Azza SIRIUS ATX Mid Tower Case ($40.98 @ Newegg)
Power Supply: Antec Neo Eco 620W 80+ Bronze Certified ATX Power Supply ($69.97 @ OutletPC)
Total: $420.67
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-12-06 20:13 EST-0500


The power supplies are larger than needed for future upgrades.

This would do

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i3-4150 3.5GHz Dual-Core Processor ($97.27 @ NCIX US)
Motherboard: ASRock H97M PRO4 Micro ATX LGA1150 Motherboard ($82.98 @ Newegg)
Memory: G.Skill Sniper 8GB (2 x 4GB) DDR3-1600 Memory ($78.98 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($50.49 @ OutletPC)
Case: Azza SIRIUS ATX Mid Tower Case ($40.98 @ Newegg)
Power Supply: Antec Basiq 350W ATX Power Supply ($26.89 @ OutletPC)
Total: $377.59
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-12-06 20:14 EST-0500

but would limit future improvements.