Question

As described in the text, the PCI-Express bus consists of thirty-two "lanes". As of January 2009, each lanes is capable of the maximum data rate of 500 MB per second. Lanes are allocated to a device 1,2,3,8,16 , or 32 lanes at a time. Assume that a PCI-Express bus is to be connected to a high-definition video card that is supporting a 1920 x 1080 true color (3 bytes per pixel) progressive scan monitor with a refresh rate of 60 frames per second. How many lanes will this video card require to support the monitor at full capability?"

Answer 1

0 lanes at full capacity

Step-by-step explanation:

We have that 1 pixel = 3 bytes, we have 1920*1080 pixels, in order to find the number of bytes we do the product

`1920*1080*3=6220800` B or
`6.221` MB.

We have that the monitor refreshes 60 times per second!, let's mutiply that number by 60

`1920*1080*3*60=373248000` [B/second] or
`373.2` [MB/second].

Therefore, we are not using a single lane at its full capacity (500 MB/S), all the information could be carried out by a single lane