Chapter 1 Student 12 Flashcards
What is the main advantage of having an Integrated GPU? Pg36
Integrated GPU’s take much of the burden off of the CPU itself, in addition to minimizing the amount of off package communication that must occur which improves overall performance .
T or F, Memory is is so inexpensive, you could upgrade your computer to have as much memory as you want. Pg36-37
False, you can upgrade to a point. Motherboards have memory limits as do operating systems and the CPU.
What is parity checking? Pg 38
It is a rudimentary error checking scheme that offers no error correction.
What is Error Checking and Correction? Pg 39
ECC or error correcting code. If memory supports ECC, check bits are generated and stored with data. An algorithm is performed on the data and its check bits whenever data is accessed. If the result of the algorithm is all zeros, then the ft is deemed valid and processing continues. ECC can detect single and double bit errors and actually correct single bit errors.
What is single and double sided memory?Pg39
Single sided memory and double sided memory refers to how some memory modules have chips on one side or both sides. Double sided is treated as two separate memory modules.
T or F, Most manufacturers require that slower memory be inserted in lower numbered memory slots. Pg 41
True….and possibly False. Most systems adapt the memory to the first module it sees, looking at the lower numbered slots first. However it might be required that you install modules in reverse order…refer to the manufacturer documents
What is DRAM? Pg42
Dynamic Random Access Memory. When you expand memory in a computer, you are adding DRAM.
What is Synchronous DRAM? Pg42
Shares a common clock signal with the computer’s system bus clock, which provides the common signal that all local bus components use for each step they perform.
What is SDR SDRAM? Pg43
Single data rate SDRAM. Every time the clock ticks, 1 bit of data can be transmitted per data spin, limiting the bit rate per pin of SDRAM to the corresponding numerical value of the clocks frequency.
What is DDR SDRAM? Pg 43
Double data rate SDRAM. It doubles the transfer rate of ordinary SDRAM, it does so by double pumping the data, which means transferring a bit per pin on both the rising and falling edges of a clock signal. Heating issues can be caused if the clock frequency is increased.
What is DDR2 SDRAM? Pg 44
Think of the 2 in DDR2 as yet another multiplier of 2 in the SDRAM technology, using a lower peak voltage to keep power consumption down ( 1.8v vs 2.5v of DDR).
What is DDR3 SDRAM ? Pg 45
The next generation of memory devices that was designed to double the performance of DDR2 products. It’s peak voltage is only 1.5v.
What is DRDRAM? Pg 45
Direct Rambus DRAM. It is a legacy proprietary SDRAM technology.
T or F, Be careful when shopping for different memory types. Depending on what type of motherboard and CPU you have will dictate what kind of memory you can use. Pg 46
True
What is SRAM? Pg 48
Static random access memory. It does not require a refresh signal like DRAM does. These chips are more complex and that makes them more expensive, but they are faster than DRAM.
