Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to buy a high performance video card [title] Understand the graphical processing unit. [step] The gpu is the most important part of a video card, as it performs all of the calculations necessary to display beautiful, real-time graphics on your screen. A gpu's strength is measured in clock speed, notated with " hertz " as its unit of measurement.

Ending1: This unit records time, and can help you with the graphics cards that you are reviewing. [substeps] As the profile shows, a gpu is able to produce graphics very fast. Ending2: In general, the higher the clock speed, the more power it has. Upper tier gpus will have a clock speed between 700 and 800 mhz. Ending3: This is the atomic production time needed to generate animation. [title] Know what other features are necessary to play video games. Ending4: [title] Assess the graphics you are looking at. [step] Determining how many graphics should be present on your screen will help you with the pros and cons of a graphics card, as well as how much space and rotation they can add to your budget.

Answer format: ending1/ending2/ending3/ending4