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PCI Vs PCI Express: What’s the Difference?


PCI Vs PCI Express are two different versions of internal bus standards for connecting or injecting peripheral devices into equipment like computers, network servers. But do you know about their relations? And could you tell the differences in PCI Vs PCI Express? To figure out these questions, an exploration for PCI and PCI Express will be introduced in this post.

What Does PCI Vs PCI Express Stands for?

What Is PCI?


PCI, also called peripheral component interconnect, is a connection interface standard developed by Intel in 1990. Originally, it was only used in servers. Later on from 1995 to 2005, the PCI was widely implemented in computer and other network equipment like network switch. Most commonly, PCI is used as the PCI-based expansion card to insert into the PCI slot in a motherboard of a host or server. In the expansion card market, the popular PCI expansion cards are NIC card or network interface card, graphics card, and sound card.

What Is PCI Express?


PCI Express Network Card

Figure 1: PCI Express Network Card

PCI Express, also abbreviated as PCIe, refers to the peripheral component interconnect express. As the successor of PCI, PCI Express is also a type of connection standard carried out by Intel in 2001, which provides more bandwidth and is more compatible with existing operating systems than PCI. Similar like PCI, PCIe also can be used as expansion cards like PCIe Ethernet card to insert into PCI Express slot.

Comparison of PCI Vs PCI Express

As the replacement of PCI, PCI Express differs with it in several aspects, such as working topology and bandwidth. In this part, a brief comparison of PCI Vs PCI Express will be made.

PCI Vs PCI Express in Working Topology: PCI is a parallel connection, and devices connected to the PCI bus appear to be a bus master to connect directly to its own bus. While PCIe card is a high-speed serial connection. Instead of one bus that handles data from multiple sources, PCIe has a switch that controls several point-to-point serial connections.

PCI Vs PCI Express

Figure 2: PCI Vs PCI Express

PCI Vs PCI Express in Bandwidth: Generally, the fixed widths for PCI are 32-bit and 64-bit versions, running at 33 MHz or 66 MHz. 32 bits with 33 MHz, the potential bandwidth is 133 MB/s, 266 MB/s for 66 MHz, and 532 MB/s for 64 bits with 66 MHz. As for PCIe card, the bandwidth varies from 250 MB/s to several GB/s per lane, depending on its card size and version. For more detail, you can refer to the post: PCIe Card Tutorial: What Is PCIe Card and How to Choose It?

PCI Vs PCI Express in Others: With PCI Express, a maximum of 32 end-point devices can be connected. And they support hot plugging. While hot plugging function is not available for PCI, it can only support a maximum of 5 devices.

FAQs About PCI Vs PCI Express

1. Is the speed for PCI slower than PCI Express?

Sure, the speed for PCIe is faster than PCI. Take the PCIe x1 as an example, it is at least 118% faster than PCI. It’s more obvious when you compare the PCIe-based video card with a PCI video card, the PCIe video card x16 type is almost 29 times faster than PCI video card.

2. Can PCI cards work in PCIe slots?

The answer is no. PCIe and PCI are not compatible with each other due to their different configurations. In most cases, there are both PCI and PCIe slots on the motherboard, so please fit the card into its matching slot and do not misuse the two types.

3. What is a PCIe slot?

PCIe slot refers to the physical size of PCI Express. By and large, there are four slot types: x16, x8, x4, and x1. The more the slot number, the longer the PCIe will be. For example, PCIe x1 is 25 mm in length, while PCIe x16 is 89 mm.


In this post, we make a comparison in PCI Vs PCI Express from their origin, working mode to their bandwidth, etc. In the final part, there are several frequently asked questions listed for your information. Hope this post will give you some inspirations in telling PCI Vs PCI Express.

Overview The Ethernet Technology

The term Ethernet in basic terms is cables linked to a network which in-turn send data packets across several networks. Ethernet works by linking computers and other devices through cables. One end of these cables is connected to the computer, and the other is to a connector. These Fiber Connectors could be Repeaters, Hubs or fiber switch.

In the present, the Ethernet technology is available in many versions. The earliest ones are the 10BASE5 (the very first standard), 10BROAD36 (the first standard that allowed long-distance connections), 10BASE2 (also known as the Cheapernet) and 1BASE5 (said to be a failure but started the following developments in Ethernet technology).

The more modernized generation of the technology came with different speed performances. The 10 megabit Ethernet was the first to step out of the previous 1Mbit/second rating. And then the Fast Ethernet, which upholds the rate of 100Mbit per second, dethroned the previous by executing ten times higher.

And then the Gigabit Ethernet was born, priding itself with an even more edgy speed of 1 gigabyte per second data transmission. The Gigabit Ethernet soon opened doors for the 10 Gigabit Ethernet, the variant that surpassed its already-powerful precedent. And today, the public is only waiting for newer versions 40 and 100 Gigabit to be released.

Some Ethernet knowledge you must know. The 10 Mbps protocol continues to be most widely used for most networks, and commonly regarded as ‘Standard Ethernet’ as well as 10BASE-T. Many networks are currently making use of something known as the ‘Fast Ethernet’ which uses a 100 Mbps protocol and is known as 100BASE-T. Finally you will find the 1000 Mbps protocol which is referred to as the ‘Gigabit Ethernet’. Most LAN systems at present use a Fast Ethernet for the main system, and every one of the computer workstations will use particular 100BASE-T or 10BASE-T ethernet card which the LAN facilitates.

The Ethernet is classified making use of international standards, explicitly IEEE 802.3. It makes it possible for the connection of fiber optic cables, up to 1024 coaxial nodes and the twisted-pair cable and the most often used is the Category 5 cable.

The Ethernet functions in such a way that signals are transmitted serially from the primary location to all locations within the network. The Ethernet will make use of a CSMA/CD Carrier Sense Multiple Access/Collision Detection. This implies that all locations will hear all transmissions but is only to listen to the ones that have been meant for it.

Depending on the size your network you are able to select Standard, Fast or GigaByte Ethernet setups. Obviously, the bigger the network the higher the Ethernet setup you need to utilize. If you use the Standard Network but have hundreds of workstations on the network, it may not be able to handle all the transmissions and can have too many collisions which will decelerate everything. Want to have some products to support your Ethernet, like serial to ethernet, ethernet card,ethernet Media Converter and so on. FiberStore maybe can help you.

Many newer versions of Ethernet are updated often as the necessity for more performance primarily based services becomes imperative. The wants of organisations differ and thus does the dimensions of the network. The value for putting in place an Ethernet network depends upon the quantity of computers that is to be connected on the network. The computers therefore connected through the Ethernet network can share a common operating system, security measures and unique identification certificates. It uses special routers, switch or modems for this according to the need or necessity. It wants minimal hardware and that is principally Ethernet cables to connect. It will be used for both wired and wireless interfaces. Even for personal use one will founded the Ethernet affiliation to attach a pair of-three computers among the same home network. Thus it is extremely helpful to form a standard communication network within an area. Knowing what ethernet communications are will be terribly helpful to all technocrats and even the laymen as everyone is using computers at home and within the office.

Some Steps Of CCTV Installing And CCTV Tester

CCTV(Closed-circuit television) uses one or more video cameras to send out video and sometimes audio images to a monitor, group of monitors, or video recorder. The real difference between CCTV and standard TV is the fact that standard TV openly broadcasts signals to the public. CCTV is not openly transmitted to the public. CCTV uses either wireless or wired transmission to send the broadcast from your cameras on the monitor or recorder. Most CCTV systems can be used surveillance, that may include security monitoring, spying, or safety monitoring. CCTV systems have become extremely popular over the past a long time since the technology has improved and be cheaper. Virtually all CCTV cameras being used today are generally for surveillance and security purposes. CCTV systems are available in nearly all bank, casino, mall, and big mall. CCTV systems have grown to be so affordable, most smaller mom and pop stores also have CCTV systems included for security purposes. To install a cctv in your life, you must have a cctv tester to testing the equipment, make sure the CCTV systems can work. Testing is very important to complete the project on agreed deadline and not to overspend or duplicate the work.


a. Ensure that the cables you might need to use is right.
b. Ensure that the cameras are in the correct location.
c. Ensure that you will find a proper reason for entrance externally of the house for the inside.
d. Find the best area for the screen and DVR to become stationed.
e. Find a sort of large capacity DC voltage because the energy with the CCTV video cameras.
f. After all the previous steps have being carried out, a appropriate CCTV security camera tester should be required.


The CCTV tester may be the useful gizmo for CCTV system, that is experiencing a leap in technology using digital techniques and also the Internet.CCTV tester can be used for displaying video, controlling PTZ, generating images, capturing data of RS485 and testing LAN cable etc. Its functions, easy operation, and convenient portability enable it simple for that contractor to set up and look after the playback quality camera, promote working efficiency and cost-down the expenditure from the project. .

Fiberstore is a professional fiber optic products supplier, you also can find other optical fibre products ethernet card, fiber switch, fiber optic connectors, etc. Welcome to our store to choose your fiber optic products.

The Detail For RJ45 Interface Connector

In this network era, the connector has been becoming more and more popular in our life. All kinds of copper wires and fiber optic cables are likely to require corresponding connectors such as RJ45 connectors/plugs and fiber connectors. Here, we focus on the connector for RJ45 Interface involved with RJ45 Ethernet cable.

What Is RJ45 Interface Connector?

Commonly known as “crystal head” given its appearance, RJ45 interface connector is a kind of component that can insert along a fixed direction into a RJ45 interface and can prevent loss of plastic connectors automatically. RJ45 is a kind of network interface specification (similar to RJ11 interface, commonly used as “telephone interface” to connect telephone lines). Crystal head is suitable for the equipment or horizontal subsystem field termination, shell material with high density polyethylene. Both ends of the twisted pair must be installed RJ45 plug to plug the RJ45 connector on the RJ45 interface card (NIC), the hub or switch on RJ45 interface, for network communication. Each of the twisted pair at both ends by installing crystal head with NIC connected to a hub (or switch). RJ45 interface is typically used for data transmission, the most common application interfaces for the network card.

RJ45 Interface Connector

Line Sequence for Network Cable Cords

The RJ45 network cord, made up of a total of eight core, is widely used in LAN and ADSL broadband Internet between network devices for network cable connection. It is often inserted into a RJ45 interface connector to form a RJ45 Ethernet cable.

There are two connection orders  (line sequence) for the eight cores. Normally, the two line sequence were referred to as T568A line order and T568B wire order in the specific application. One order for T568A is white green, green, white orange, blue, white blue, orange, white brown, brown; the other is white orange, orange, white green, blue, white blue, green, white brown, brown.


RJ45 Interface Connector Types

Common RJ45 connector can be divided into two categories: DTE type used in Ethernet card, router, etc., and the DCE type used in switches, etc. DTE is called “data terminal equipment”, DCE is known as “data communications equipment”. In a sense, DTE device known as the “active communication equipment”, DCE devices referred to as “passive communication equipment”. When two types of devices using RJ45 interface connection communication, one must use a crossover cable connection.


In network products, network cable and RJ45 connector may be ordinary but necessary. Although Internet cable and crystal head is not important things, but if the quality of cable with crystal head is not good, then you will often meet all kinds of puzzling problem when surfing the Internet for transmission and the exchange of important data. So the choice and buying of cables and crystal head is important as well. By the way, FS.COM offers RJ45 Plugs with high quality and have superior performance in your networking system.

Related Articles:
How to Choose and Buy the Best Ethernet Cable
Difference of Straight Through and Crossover Cable
Patch Cable vs. Crossover Cable: What Is the Difference?
Quick View of Ethernet Cables Cat5, Cat5e And Cat6