unawezaje kutofautisha hard drive ya SATA na IDE?

[Joeli]

NNA MASWALI MAWILI 1. unawezaje kutofautisha hard drive ya SATA na IDE? (KWA KUANGALIA TU) 2. UNAWEZAJE KUTOFAUTISHA MEMORY YA DDR1, DDR2M NA DDR3

 

[Nyasiro]

HHD ya IDE huwa na pin nyingi halafu ile slot yake ya data ambayo inapin nyingi huwa ni pana lakini ya SATA sio pana na haina pin nyingi. (Ingawa nadhani kuna tofauti kati IDE na SATA za desktop na laptop.)

 

[Herbalist Dr MziziMkavu]

What is the difference between DDR3, DDR2, DDR, and SDRAM?

Most desktops and notebooks use one of four popular types of dynamic random access memory (DRAM) for the main system memory.

Single data rate (SDR) SDRAM is the older type of memory, commonly used in computers prior to 2002.

Double data rate (DDR) SDRAM hit the mainstream computer market around 2002 and is a straightforward evolution from SDR SDRAM. The most significant difference between DDR and SDR is that DDR reads data on both the rising and falling edges of the clock signal, enabling a DDR memory module to transfer data twice as fast as an SDR memory module.

Systems implementing the follow-on technology to DDR, called DDR2 began to appear in mid-2004. DDR2 achieves speeds beyond that of DDR, delivering bandwidth of up to 8.5 GB per second. Frequently, DDR2 based systems can use memory installed in pairs to run in "dual channel mode" to increase memory throughput even further.

The latest generation of memory technology, DDR3, began to appear in systems in late 2007. DDR3 is an evolutionary step beyond DDR2 and operates at lower voltages, thereby consuming less power, and can transfer data at rates up to 12.8 GB per second. Typically, DDR3 based systems can address memory modules in banks of 1, 2 or 3. If a system supports it, installing memory in matched sets of 2 or 3 modules (dual channel or triple channel modes) will deliver greatly increased memory performance over running a single memory module by itself.

Generally speaking, motherboards are built to support only one type of memory. You cannot mix and match SDRAM, DDR, DDR2, or DDR3 memory on the same motherboard in any system. They will not function and will not even fit in the same sockets.

The right type of memory to use is the one that your computer takes! The easiest way to find the right memory for your computer is to look up your system in Crucial's Memory Advisor tool. The Memory Advisor tool will list only compatible memory for your system.

If you don't know the exact model of your computer, the Crucial System Scanner can scan your computer hardware to automatically detect your system configuration and give you a report on which upgrade is right for you.


IDE vs SATA

IDE and SATA are different types of interfaces to connect storage devices (like hard drives) to a computer's system bus. SATA stands for Serial Advanced Technology Attachment (or Serial ATA) and IDE is also called Parallel ATA or PATA. SATA is the newer standard and SATA drives are faster than PATA (IDE) drives. For many years ATA provided the most common and the least expensive interface for this application. But by the beginning of 2007, SATA had largely replaced IDE in all new systems.
The ATA interface (ATA stands for AT attachment where "AT" refers to IBM's PC/AT for which it was originally built) evolved in stages from Western Digital's original Integrated Drive Electronics (IDE) interface. After the introduction of Serial ATA in 2003, the original ATA was retroactively renamed Parallel ATA.
Comparison chart

[TABLE="class: zebra-striped, width: 586"]
[TR]
[TH="class: acol, align: center"][/TH]
[TH="class: vcol"]IDE[/TH]
[TH="class: vcol"]SATA[/TH]
[/TR]
[TR="class: comparisonRow"]
[TD="class: acol, bgcolor: #F9F9F9"]Stands for / AKA:[/TD]
[TD="class: vcol, bgcolor: #F9F9F9"]IDE: Integrated Drive Electronics / PATA: Parallel Advanced Technology Attachment[/TD]
[TD="class: vcol, bgcolor: #F9F9F9"]Serial Advanced Technology Attachment Serial ATA[/TD]
[/TR]
[TR="class: comparisonRow"]
[TD="class: acol"]Lineage:[/TD]
[TD="class: vcol"]Superseded by SATA[/TD]
[TD="class: vcol"]Supersedes Parallel ATA (PATA) aka IDE[/TD]
[/TR]
[TR="class: comparisonRow"]
[TD="class: acol, bgcolor: #F9F9F9"]Year Created:[/TD]
[TD="class: vcol, bgcolor: #F9F9F9"]1986[/TD]
[TD="class: vcol, bgcolor: #F9F9F9"]2003[/TD]
[/TR]
[TR="class: comparisonRow"]
[TD="class: acol"]Hot plugging (add/remove component while the computer is running):[/TD]
[TD="class: vcol"]IDE interface does not support hot plugging[/TD]
[TD="class: vcol"]SATA interface supports hot plugging[/TD]
[/TR]
[TR="class: comparisonRow"]
[TD="class: acol, bgcolor: #F9F9F9"]Speed:[/TD]
[TD="class: vcol, bgcolor: #F9F9F9"]data transfers at the rate of up to 133Mb/sec[/TD]
[TD="class: vcol, bgcolor: #F9F9F9"]data transfers at the rate of 150Mb/sec to 6Gbits/sec[/TD]
[/TR]
[TR="class: comparisonRow"]
[TD="class: acol"]Data cable:[/TD]
[TD="class: vcol"]Ribbon-like, wide, can be up to 18 inches long[/TD]
[TD="class: vcol"]Narrow, can be up to 39 inches long[/TD]
[/TR]
[TR="class: comparisonRow"]
[TD="class: acol, bgcolor: #F9F9F9"]Advantages:[/TD]
[TD="class: vcol, bgcolor: #F9F9F9"]Maximum compatibility[/TD]
[TD="class: vcol, bgcolor: #F9F9F9"]SATA cables are also smaller in size than a PATA cable, allowing for increased airflow inside the computer case and decreased heat build up. This can help improve the overall life of a computer.[/TD]
[/TR]
[TR="class: comparisonRow"]
[TD="class: acol"]Disadvantages:[/TD]
[TD="class: vcol"]Lacks support for new technology such as native command queuing and hot-plugging hard drives[/TD]
[TD="class: vcol"]1. SATA hard drives will sometimes require a specific driver to be loaded to a computer when installing an operating system 2.SATA is that the cable allows for only one SATA hard drive to be connected at a time. Whereas a PATA cable allows for hookin[/TD]
[/TR]
[TR="class: comparisonRow"]
[TD="class: acol, bgcolor: #F9F9F9"]Jumpers:[/TD]
[TD="class: vcol, bgcolor: #F9F9F9"]In a computer system, it's possible to have more than one harddrive. To connect multiple IDE drives, you need to chain the ribbon cables from one to the next. The computer system has no idea which is the main drive, from which to load the OS.[/TD]
[TD="class: vcol, bgcolor: #F9F9F9"]SATA drives don't use jumpers. Each drive connects directly to the motherboard. To set the primary drive, you can access the settings from the computers BIOS (special software that runs when you start the computer).
[/TD]
[/TR]
[/TABLE]

Mkuu C6 ndivyo hivyo?