Computer | Hard Drive Capacity | RAM | Processor Speed | Price | USB Ports | Style | | HP-Pavilion Slimline 400-224 | 1 TB | 6 GB | 1.5 GHz | $379.99 | 6 (2 3.0, 4 2.0) | Desktop | | Lenovo Erazer | 1 TB + 128 GB | 12 GB | 3.6 GHz (turbo up to 3.8) | $1,419.99 | 10 (3 3.0, 7 2.0) | Desktop | | HP-Pavilion 17-ell3dx | 750 GB | 4 GB | 1.9 GHz (turbo up to 2.8) | $399.99 | 3 (2 3.0, 1 2.0) | Laptop | | Toshiba Satellite | 750 GB | 8 GB | 1.6 GHz (turbo up to 2.6) | 699.99 | 4 (2 3.0, 2 2.0) | Laptob | |

Term trader: A term trader will need a computer with good memory and capable speed for online trading of energy at up to the second pricing. If he uses a computer that is short on the needed speed than he could miss out on a good trading price for oil, electricity, or nuclear fuels. For this job 4 GB of RAM and at least 1 GB of hard drive will suffice just fine. But for up to the second price change you will most likely want a processor speed of 3 Ghz. So for this job you want the Ghz of the Erazer but only need the hard drive and RAM of the Slimline. So I would go with a model type that would have those specifications. Which isn't in the above table.
Graphic designer: Graphic design integrates computers in virtually every step of the design process from conception to production and in a range of media including print, video, and web. For graphic design 8 GB or more of RAM is preferred and 750 GB of hard drive capacity. Processor speed is not as important as it is with a Term Trader. So 1.5 Ghz is plenty. Knowing those requirements I would be inclined to use the Toshiba Satellite Notebook.
Teacher: A teacher does not need anything above the standard hard drive, RAM, and processor speed. The could get by on 128 MB of RAM. Since their job has no certain system requirements than you should go with the cheapest and most comfortable model. If chooding from