Your statement is not very accurate.
For a gaming PC,
Graphic card > Processor > RAM > HDD
Graphic card is judged on its Core Clock , Memory Clock and Shader Clock.
As well as Bus Width(most important).
Explanation for Graphic card:
Bus Width is most important! The smaller the Bus Width, the weaker your graphic card is.
A higher Bus width allows for the transfer of more data per LOAD operation.
Provided the GPU can execute all its data in a single cycle, the higher bus width would clearly be faster. Of course, that almost never happens, so most of the data needs to be stored in RAM, where faster RAM speeds then start to close the distance.
The number of memory(MB) is actually the Memory Clock(use MHz as its unit).
The higher the memory(MB), the higher the Memory Clock.(sometime is not true but this make easy to understand)
However, memory(MB) of a graphic card can be DDR, DDR2 and DDR3.
DDR3 provides the fastest speed.
For example:
Nvidia GF 9500MGS 512MB DDR-2 V.S Nvidia GF 9500MGS 512MB DDR-3
The Memory Clock of 9500MGS 512MB DDR-2 shown 400MHz.
The Memory Clock of 9500MGS 512MB DDR-3 shown 700MHz.
I read an article said that Core Clock is not as important as Memory Clock.
However, if your graphic card does not possess Core Clock, it can't function as well.
Shader Clock is actually directly proportionate to Core Clock. The MHz of Shader Clock is 2x of the MHz of the Core Clock.
But not all kind of graphic cards use this theory.
Conclusion,
Bus Width > Memory Clock > Shader Clock > Core Clock
Explanation of Processor(I dig it out),
The processor (CPU, for Central Processing Unit) is the computer's brain. It allows the processing of numeric data, meaning information entered in binary form, and the execution of instructions stored in memory.
The first microprocessor (Intel 4004) was invented in 1971. It was a 4-bit calculation device with a speed of 108 kHz. Since then, microprocessor power has grown exponentially.
CPU stands for central processing unit. Overall a personal computer can be divided into the following major parts from point of view of functions performed:
1. Input devices (keyboard, mouse)
2. Output devices (monitor which displays the output or results of work being done on the computer)
3. CPU (central processing unit, which is the brain of the computer which does all the processing and calculations on data inputs and provides output on screen or printer)
4. Storage devices (memories, hard disk which store data).
Many times in common language the CPU term is used for the computer box unit which contains motherboard, processor, hard disk, CD/DVD and floppy drives. This is the box to which we connect monitor, keyboard, mouse and printer through cables. In technical terms the term CPU is used only for the processor, which fits on the motherboard.
Central Processing Unit (CPU), in computer science, microscopic circuitry that serves as the main information processor in a computer. A CPU is generally a single microprocessor made from a wafer of semiconducting material, usually silicon, with millions of electrical components on its surface. On a higher level, the CPU is actually a number of interconnected processing units that are each responsible for one aspect of the CPU's function. Standard CPUs contain processing units that interpret and implement software instructions, perform calculations and comparisons, make logical decisions (determining if a statement is true or false based on the rules of Boolean algebra), temporarily store information for use by another of the CPU's processing units, keep track of the current step in the execution of the program, and allow the CPU to communicate with the rest of the computer.
A CPU is similar to a calculator, only much more powerful. The main function of the CPU is to perform arithmetic and logical operations on data taken from memory or on information entered through some device, such as a keyboard, scanner, or joystick. The CPU is controlled by a list of software instructions, called a computer program. Software instructions entering the CPU originate in some form of memory storage device such as a hard disk, floppy disk, CD-ROM, or magnetic tape. These instructions then pass into the computer's main random access memory (RAM), where each instruction is given a unique address, or memory location. The CPU can access specific pieces of data in RAM by specifying the address of the data that it wants.
As a program is executed, data flow from RAM through an interface unit of wires called the bus, which connects the CPU to RAM. The data are then decoded by a processing unit called the instruction decoder that interprets and implements software instructions. From the instruction decoder the data pass to the arithmetic/logic unit (ALU), which performs calculations and comparisons. Data may be stored by the ALU in temporary memory locations called registers where it may be retrieved quickly. The ALU performs specific operations such as addition, multiplication, and conditional tests on the data in its registers, sending the resulting data back to RAM or storing it in another register for further use. During this process, a unit called the program counter keeps track of each successive instruction to make sure that the program instructions are followed by the CPU in the correct order.
It executes instructions and handles multitasking
Processor is the brain of the computer, performs most of the computer calculations which enables computer to work.
Explanation of RAM,
http://en.wikipedia.org/wiki/RAM
Explanation of HDD(hard disk drive/space),
http://en.wikipedia.org/wiki/Hard_disk
Problems? See this thread at archive.org.
