Things remember to purchase a PC

Here are the main components to keep an eye on.

• CPU: The "brains" of your computer, the processor has a huge influence on performance, but depending on what you want to do, even the least-expensive model may be good enough. Here's a rundown.
  • AMD A series or Intel Core i3 / i5: If you're looking for a mainstream laptop with the best combination of price and performance, get a Core i5. Core i3 is a small step down. AMD A series CPUs are less common, but promise similar performance.
  • Intel Core i7: High-end performance for gaming rigs and workstations.
  • AMD E Series or Intel Pentium/Celeron: Found on low-cost laptops. It provides just enough performance to enable basic tasks such as video viewing, document editing and Web surfing.
  • Intel Atom: Also found on low-cost laptops and 2-in-1s. It offers basic performance but more battery life than Celeron/Pentium.
  • Intel Core m3 / m5 / m7: Low-power and low heat allow systems with these processors to go fanless. Performance is better than Celeron, but a notch below Core i3 / i5.
• RAM: Some sub-$250 laptops come with only 2GB of RAM, but ideally you want at least 4GB on even a budget system and 8GB if you can spend just a little more.
• Storage Drive ( Hard Drive): Even more important than the speed of your CPU is the performance of your storage drive. If you can afford it and don't need a ton of internal storage, get a laptop with a solid state drive (SSD) rather than a hard drive, because you'll see at least three times the speed and a much faster laptop overall.
  Display: The more pixels you have, the more content you can fit on-screen, and the sharper it will look. Most budget and mainstream laptops have 1366 x 768 displays, but if you can afford it, we recommend paying extra for a panel that runs at 1920 x 1080, also known as full HD or 1080p. (The difference is typically about $TK.) Some higher-end laptops have screens that are 2560 x 1600, 3200 x 1800 or even 3840 x 2160, which all look sharp but consume more power, lowering your battery life.
• Touch Screen: If you're buying a regular clamshell laptop, rather than a 2-in-1, you won't get much benefit from a touch screen and you will get 1 to 3 hours less battery life. On 2-in-1s, touch screens come standard.
• Graphics Chip: If you're not playing PC games, creating 3D objects or doing high-res video editing, an integrated graphics chip (one that shares system memory) will be fine. If you have any of the above needs, though, a discrete graphics processor from AMD or Nvidia is essential. As with CPUs, there are both high- and low-end graphics chips. Nvidia maintains a list of its graphics chips from low to high end, as does AMD.
• DVD/Blu-ray Drives. Few laptops come with optical drives, because all software and movies are downloadable. However, if you really need to read / write discs and your laptop of choice doesn't come with a built-in DVD drive, you can always buy an external one that connects via USB