Donameous,
Here's an idea >
BambiBoom PixelSnaffler Dutcharific WalletJoyScream Expressivo TurboKitten 3000 ©£?^®™(SM)$©
1. AMD A4-5300 Trinity 3.4GHz (3.6GHz Turbo) Socket FM2 65W Dual-Core Desktop APU (CPU + GPU) with DirectX 11 Graphic AMD Radeon HD 7480D AD5300OKHJBOX > $54.99
2. MSI FM2-A75MA-E35 FM2 AMD A75 (Hudson D3) SATA 6Gb/s USB 3.0 HDMI Micro ATX AMD Motherboard > $59.99
3. ADATA XPG v1 4GB Desktop Memory Module - DDR3, PC3-12800, 1600MHz, CL 9, 1.5V (AX3U1600GC4G9-1G) > $34.99 (Tigerdirect)
4. XFX One ON-XFX1-PLS2 Radeon HD 5450 1GB 64-bit DDR3 PCI Express 2.1 x16 HDCP Ready Low Profile Video Card $29.99
5. Western Digital WD Blue WD5000AAKX 500GB 7200 RPM 16MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive > $59.99
6. SAMSUNG DVD Burner SATA Model SH-224DB/RSBS
Item #: N82E16827151269 > $15.99
7. PSU > (Special Deal) CORSAIR Builder Series CX430 430W ATX12V v2.3 80 PLUS BRONZE Certified Active PFC Power Supply > $40, but currently (9.28.13) at Newegg, $19.99 after rebate. I think of Corsair and Seasonic as the best makers of PSU.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139026
8. Antec NEW SOLUTION SERIES VSK-4000 Black SGCC steel ATX Mid Tower Computer Case > $34.99
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Total = $311
The AMD Integrated graphics is not too bad, but it does subtract some system resources. I added a $30, 1GB GT 240 to a 3-core AMD system used for similar purposes(it was using AMD 7025 IG)- and on Passmark the rating went from 262 to 1394 mainly as a result of the 3D score rising from 24 to 640. I tried the revised system with Sketchup and the 3D modeling worked just fine!
Cheers,
BambiBoom