new to computers? Here are a few basic things.
PCI Express was designed to replace the general-purpose PCI (Peripheral Component Interconnect) expansion bus, the high-end PCI-X bus and the AGP graphics card interface. Unlike previous PC expansion interfaces, rather than being a bus it is structured around point-to-point full duplex serial links called lanes. In PCIe 1.1 each lane carries 250 MB/s (250 million bytes per second) in each direction. PCIe 2.0 doubles this, emerging in late 2007, and is found on newer systems such as the Mac Pro. The latest proposed PCIe 3.0 standard will increase this further (scheduled for release around 2010).
PCI-E 2.0 is basically the same as 1.0 but has a higher bandwidth.
PCI-E is backwards compatible, meaning that a PCI-E 1.0 card will work in a PCI-E 2.0 socket, but not the other way around.
^^some information taken from wiki^^
Ram (random access memory) is what feeds information to you CPU (central processing unit) it uses cycles to send data to the CPU. There are many different types of ram but the most relevant are DDR, DDR2, DDR3, and GDDR. DDR is an older version of ram that is still in use but not as much as DDR2. DDR2 is the ram that is most commonly used in computers because of the price and performance. DDR3 is uncommonly used but it does have a slight performance increase over DDR2 but its price diverts people from using it. GDDR can be GDDR up to GDDR4 but is used on GPU’s as there source of memory not as system memory. The main difference between DDR, DDR2, DDR3 and DDR4 is the amount of data that is processed in each cycle. EX. DDR2 memory processes more data each cycle then DDR.
All Ram is not compatible, if your motherboard supports DDR2 memory it does not support DDR or DDR3, only DDR2. Your Motherboard does not need to be compatible with GDDR ECT. Ram.
SATA (Serial Advanced Technology Attachment) has a transfer rate of 1.5gbit/s. SATA is a computer bus primarily designed for transfer of data between a computer and storage devices such as hard disk drives and optical drives.
The main advantages over the older parallel ATA interface are faster data transfer, ability to remove or add devices while operating, and thinner cables that let air cooling work more efficiently.
SATA2 (Serial ATA II) has a transfer rate of 3.0gbit/s. SATA 2 only has faster transfer rates, other then that it is the same as SATA.
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