First Build, would like some input.

My old prebuilt is dead, so I'm biting the bullet and building my first computer but I'm not entirely knowledgeable. My budget is around 400-450 or so (though if I can get similar performance for less, I'd go for it.) I'm mostly just wanting input on if the parts I've picked are worth purchasing before I finalize. And if everything is compatible. I don't want to potentially waste hundreds of dollars anyways since I'm on a budget as is. I plan to use the computer for gaming but I'm not hung up on having max graphics at 60+ FPS. I'll be happy with being able to run at medium with tolerable framerates.
Heres what I've come up with so far.

Case: COOLER MASTER Elite 430 RC-430-KWN1 Black Steel / Plastic Computer Case
http://www.newegg.com/Product/Product.aspx?Item=N82E16811119227

SAMSUNG Internal DVD Writer 22X DVD+R 8X DVD+RW 8X DVD+R DL 22X DVD-R 6X DVD-RW 16X DVD-ROM 48X CD-R 24X CD-RW 48X CD-ROM Black SATA Model SH-222BB/RSBS
http://www.newegg.com/Product/Product.aspx?Item=N82E16827151255

HDD: Seagate ST310005N1A1AS-RK 1TB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive
http://www.newegg.com/Product/Product.aspx?Item=N82E16822148321

Powersupply: CORSAIR Builder Series CX430 V2 (CMPSU-430CXV2) 430W ATX12V v2.3 80 PLUS Certified Active PFC Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139026

Memory: G.SKILL Value Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10600) Desktop Memory Model F3-10600CL9D-8GBNT
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231422

CPU: Intel Core i3-2120 Sandy Bridge 3.3GHz LGA 1155 65W Dual-Core Desktop Processor Intel HD Graphics 2000 BX80623I32120
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115077


MSI H61M-P31 (G3) LGA 1155 Intel H61 Micro ATX Intel Motherboard with UEFI BIOS
http://www.newegg.com/Product/Product.aspx?Item=N82E16813130639

for GPU I planned to reuse my current card for the time being which is a GT 430. I'll likely upgrade when I have extra cash on hand but for now we'll go with it.

And then there is this combo on Newegg (with tax and shipping it's around 30 dollars cheaper). Is it better? The same? Worse? http://www.newegg.com/Product/ComboBundleDetails.aspx?ItemList=Combo.956695

Knowing all this, is there anything I'm missing I may need? Does everything work together? Could I do better for around the same price? Any help is appreciated.

Don't forget, you need a copy of Windows.

I would swap out the CPU you've chosen for the AMD A8-3870K Unlocked Llano 3.0GHz which is somewhat better and is a quad core for roughly the same price. The MSI A55M-P33 FM1 AMD A55 is also a decent board to go with it.

Anything else? Will I need a bigger PSU?

Anything else? Will I need a bigger PSU?

No, you won't need a bigger psu unless your gonna add in a graphics card in the future then yes.

+1 on the A8.

You could save about $10 on your hard drive if you go with this one instead: http://www.newegg.com/Product/Product.aspx?Item=N82E16822148840 and upgrade your power supply if you plan to upgrade to an even beefier card later on.

That combo looks good to me. Also if you don't want to spend money on a windows right now you could get Windows 8 for free at the moment, although many people have shown strong distaste for Windows 8.

If you want to get your own parts the A8 might be the way to go.

it seems it gonan be a good CPU.