Difference between CPU and GPU

Nov 30 -0001

Distinguish, differentiate, compare and explain what is the difference between CPU and GPU. Comparison and Differences.

CPU (central processing unit) is the primary component of the computer systems for performing arithmetic logic and control (I/O) specified instructions. On the other hand, GPU (graphics processing unit) is specialized component intended to quickly control and modify memory to accelerate rendering of images for displaying. CPU and GPU have unique feature and strengths by combining intellectually higher performance can be gained. Architecturally, the CPU consist of few cores that interacts with caches that can deal with few instructions at a time. Conversely, a GPU is comprised of many cores that can deal with a large number of instructions at the same time.

In today’s computers, the GPU can now take on numerous multimedia tasks, such as accelerating transcoding (translating) video between many formats, image processing, pattern matching and others. To an ever increasing extent, the really difficult issues to deal with are those that have a parallel nature such as signal processing, video processing and image analysis etc.

Differences between CPU and GPU

S.No.	CPU	GPU
1	Really fast caches (great for data reuse).	Has lots of math units.
2	Runs lots of differere processes / threads.	Run a program on each fragment / vertex.
3	High performance on a single thread of execution.	High throughput on parallel tasks.
4	Fine branching granularity.	Fast access to onboard memory.
5	CPU are optimised for high performance on sequential codes (caches and branch prediction).	CPU are optimised for higher arithmetic intensity for parallel nature (Floating point operations).
6	CPUs are great for task parallelism.	GPUs are great for data parallelism.