Best PC build for League of Legends?

Look, this might sound like a dumb question, but I just want some info—how much cash am I looking at for a build that can actually run League of Legends?
I don't need peripherals like a mouse, keyboard, or speakers, and I'm good on the monitor too.
Here are the recommended specs for the game:

• OS: Windows 7 / Vista / XP (64 bit Compatible with 7 / Vista) (*NOTE: the game officially supports Linux too, so this isn't strictly required)
• Processor: Intel core 2 duo 2.4GHz
• Memory: 1 GB for XP / 2GB for Vista / 7
• Graphics: DirectX 9 compatible video card with Shader model 3.0. Nvidia 7600, ATI X1600 or Better hard Drive
• Hard Drive: At least 2.5 GB of free space
• Sound: DirectX 9.0c compatible sound card

EDIT:
Realized I posted this in the wrong section. Hey mods, could you please move this over to Desktop PCs? Thanks

For Max details:

MSI AMD A78-G41_PCMATE Motherboard (SFM2+, DDR3, SATA III, RAID, GLAN, USB2.0, USB3.0, VGA, HDMI, DVI) ATX Box
AMD Athlon ii x4 760 processor
Adata DDR3 4GB 1600MHz, AD3U1600C2G11-R memory
ZAL-CNPS10X Optima MS PLUTOS CPU Cooler with 120mm fan
MS PLUTOS case without power supply
Sapphire Radeon R7 260 x OC graphics card, 1GB GDDR5, DVI, DP, HDMI 11222-05-20G
desktop Toshiba DT01ACA050 HDD (3.5", 500GB, 32MB, SATA III-600)
Chicony Active 400 w ATX PSU, CHI-HPA-400W

Total: $3,077.68+$27 shipping via google.com

For Medium / high settings with slightly lower FPSom:

Adata DDR3 4GB 1600MHz, AD3U1600C2G11-R memory
MS PLUTOS case without power supply
desktop Toshiba DT01ACA050 HDD (3.5", 500GB, 32MB, SATA III-600)
Chicony Active 400 w ATX PSU, CHI-HPA-400W
MSI H81M-P33 iH81 Motherboard (S1150, DDR3, SATA II, SATA III, PS/2, USB2.0, USB3.0, LAN, audio Line-In, Audio)
Intel Pentium G3220 processor
Asus Radeon HD7750-1GD5-V2 graphics card

Total: $794 + $27 shipping via google.com

This game is pretty CPU intensive... I guess the first build gives you a stronger processor, better graphics, and more room for overclocking or upgrading the GPU later.

Thanks for getting back to me. I'm just wondering what the deal is with the power supply, since both configurations list the "ZAL-CNPS10X Optima MS PLUTOS case without a PSU."
One more thing—if I decided to hold off for maybe another 2 or 3 months, could I actually "score" better deals on certain parts, or do you think the market is going to stay pretty much the same as it is right now?

neondrifter26 said:Thanks for getting back to me! I was just wondering about the power supply situation—it looks like both configurations mention the "MS PLUTOS case without a PSU," so what's the deal there?
Also, one more thing—if I decided to hold off for maybe another two or three months, do you think I could actually score some better deals on certain parts, or do you feel like the market isn't going to shift much from where it stands right now?

It actually lists the power supply right there—you might have missed it... it's a Chicony Active 400 w ATX PSU, specifically the CHI-HPA-400W.

neondrifter26 said:Thanks for the reply. I'm just wondering what I should do about the power supply, since both configurations list the "MS PLUTOS case without a PSU."
One more thing—if I decided to hold off for another 2 or 3 months, would I be able to "score" some better deals on certain components, or do you think the market won't change much from where it stands right now?

It’s nothing major. We might see those 250x and 265 ATI/AMD cards hit the market, and maybe the 260x will drop slightly in price (in the USA they're already around $110-$120, but the question is what the pricing will look like here in the States; we might only be talking about a few extra bucks if we're lucky.)

Thanks to everyone for the info and the advice 🙂