I was asked this question more than once, so now I will try the most accessible as possible and briefly answer it, for this I will give pictures of the PCI Express and PCI expansion slots and PCI on the motherboard for a more visual understanding and, of course, will indicate the main differences in the characteristics, T .. Very soon, you will learn what are the interfaces and how they look.
So, for starters, let's briefly answer such a question that is generally PCI Express and PCI.
What is PCI Express and PCI?
PCI - This is a computer parallel input-output bus for connecting peripheral devices to computer motherboard. PCI is used to connect: video cards, audio cards, network cards, TV tuners and other devices. The PCI interface is obsolete, so finding, for example, a modern video card, which is connected via PCI, will probably fail.
PCI EXPRESS. (PCIE or PCI-E) is a computer sequential I / O bus to connect peripherals to the computer motherboard. Those. This already uses a bidirectional sequential compound that several lines (X1, X2, X4, X8, X16, X2, X4, X8, X12, X16 and X32) are already used, the higher the bandwidth of the PCI-E tire. The PCI Express interface is used to connect such devices as: video cards, sound cards, network cards, SSD drives other.
There are several versions of the PCI-E interface. This is: 1.0, 2.0 and 3.0 (the version 4.0 will soon be released.). Denotes this interface usually, for example, like this PCI-E 3.0 x16What is the version of PCI Express 3.0 with 16 lines.
If we talk about whether it will work, for example, a video card that has pCI-E interface 3.0 on the motherboard, which only supports PCI-E 2.0 or 1.0, so the developers claim that everything will work, only of course note that the bandwidth will be limited to the capabilities of the motherboard. Therefore, in this case, overpay for the video card with more new version PCI Express I think not ( if only for the future, i.e. You are planning to purchase a new motherboard with PCI-E 3.0). Also, on the contrary, let's say, you have a motherboard supports the version of PCI Express 3.0, and I will say a video card version 1.0, then such a configuration should also work, but only with PCI-E 1.0 capabilities, i.e. There is no restriction here, since the video card in this case will work at the limit of its capabilities.
Differences PCI Express from PCI
The main difference in the characteristics is, of course, the bandwidth, in PCI Express it is significantly higher, for example, in PCI at 66 MHz bandwidth 266 MB / s, and PCI-E 3.0 (x16) 32 GB / s.
Externally, interfaces are also different, so connect, for example, the PCI Express video card in the PCI expansion slot will not work. PCI EXPRESS interfaces with different amounts of lines are also different, I'll show it all in pictures.
PCI Express and PCI Expression Slots on Motherboards
PCI and AGP slots
PCI-E X1, PCI-E X16 and PCI slots
WiFi modules and other similar devices. The development of this tire began Intel in 2002. Now the development of new versions of this tire is engaged in the Non-Profit Organization PCI Special Interest GROUP.
On the this moment The PCI Express bus completely replaced such outdated tires as AGP, PCI and PCI-X. The PCI Express bus is placed at the bottom of the motherboard in a horizontal position.
PCI Express is a tire that was developed based on the PCI bus. The main differences between PCI Express and PCI lie at the physical level. While the PCI uses a common bus, a star type topology is used in PCI Express. Each device is connected to a general switch to a separate compound.
The PCI EXPRESS software model repeats the PCI model. Therefore, most existing PCI controllers Can be easily finalized to use PCI Express bus.
PCI Express and PCI Slots on Motherboard
In addition, the PCI Express bus supports such new features as:
- Hot connecting devices;
- Guaranteed data exchange rate;
- Energy consumption management;
- Monitoring the integrity of the transmitted information;
How does the PCI Express bus running
To connect the PCI Express bus devices, uses a bidirectional sequential connection. In this case, such a compound may have one (x1) or several (x2, x4, x8, x12, x16 and x32) of individual lines. The more such lines are used, the greater the data transfer rate can provide the PCI Express bus. Depending on the number of supported lines, the size of the variety on the motherboard will be different. There are slots with one (x1), four (x4) and sixteen (x16) lines.
Visual demonstration of sizes slot PCI Express
In this case, any PCI Express device can operate in any slot if the slot has the same or large quantity lines. This allows you to install the PCI Express card with the X1 connector in the X16 slot on the motherboard.
The PCI Express bandwidth depends on the number of lines and the bus version.
|
In one / both sides in Gbit / s |
|||||||
|
Number of lines |
|||||||
| PCIE 1.0. | 2/4 | 4/8 | 8/16 | 16/32 | 24/48 | 32/64 | 64/128 |
| PCIE 2.0. | 4/8 | 8/16 | 16/32 | 32/64 | 48/96 | 64/128 | 128/256 |
| PCIe 3.0. | 8/16 | 16/32 | 32/64 | 64/128 | 96/192 | 128/256 | 256/512 |
| PCIE 4.0. | 16/32 | 32/64 | 64/128 | 128/256 | 192/384 | 256/512 | 512/1024 |
Examples of PCI Express Devices
First of all, PCI Express is used to connect discrete video cards. Since the advent of this tire, absolutely all video cards are used precisely.
Gigabyte GeForce GTX 770 Video Card
However, this is not all that the PCI Express bus can. It uses manufacturers of other components.
Sound Card SUS Xonar DX
SSD OCZ Z-DRIVE R4 Enterprise Drive
Problems with PCI-E connector. Food connectivity, north bridge. It should be borne in mind that motherboards - mutants may not work with all video cards.
ASUS P5Q does not define a video card
Hello. The ASUS P5Q Rev 1.03 mother starts - at Postos 99 or 98 after 3-5 seconds, posts start running. The speaker gives a signal 1 long 3 short and then pass posts and a short single signal. There is naturally nothing on the monitor, judging by the HDD activity. On the PCI card The picture is also a speaker Only one short signal gives although at the start still there is a pause on codes 99 or 98. The BIOS flash drive has been replaced and a visual inspection is carried out on mechanical damage. Did the bridge or anything else? Video card 100% working, even somewhat tried different generations.
Lenovo H81H3-LM ceased to see the video card PCIExpress16x
Good day! The Lenovo H81H3-LM fee ceased to see the PCIExpress16x video card, it starts normally on the integrated. The video card is a whole, was checked on another PC. On the PCIExpress16x connector - all 12 volts are present, 3.3, too, on 0.3 volt Receiver Lane lines, and on TRANSMITTER LANE 0.1. In Bios included different priorities Video, nothing happened. Condals in the slot of the slot are all physically. Assumptions 2 either Bios drives, or dump socket! From the manufacturer's website downloaded BIOS, but it goes the ROM file for the utility. If anyone has in BIN format for a prier, I will be grateful.
GA-8I915MD-GV is the FF post, but the video signal is absent, both with the built-in and PCI-E
Good time forumchan. There is a GA-8I915MD-GV mother, turns on normally, there is a single post signal, as the status on the PCI POST Card "FF" but there is no video signal from the built-in card and from any video card to PCI-E. Accordingly, the wires and monitors were checked and changed.
If you lose BIOS Loading The PCI POST CARD comes to "7f" click F1 and then everything is OK "FF" on the keyboard the mother reacts.
The visual inspection of the results did not give. Tearing for the presence of heated elements, as the result did not give. Probs and memory changed.
Tell me where else can you see!?
Thanks in advance, Alexander.
GA-MA770T-UD3
There is a motherboard GA-MA770-UD3 speaker swears on the Viyukh (.--) In the PCI-E slot. With PCI, the image has and speaker picks once as it should be (+ post the same 25). Probs changed, RAM, too, in different slots. Changed in places of dual bios; Climbed in Bius; At the PCI-E Section, there are noft, contacts in order (cereals. Condals are normal). Aft at the Procedal and RAM is normal. What's wrong with her? Really bridge? Lord pros tell me what to do! Pliz!
+ USB resistance - ok
Gigabyte GA-M52L-S3P does not work PCI-E
Hello! Next problem:
Gigabyte GA-M52L-S3P Rev.1.0 board starts
POST card stops on Code 18 / 88-24 1 - initialize slot 4. Video output on PCI-E is missing (voltage 3.3V and 5V on the connector are present), the system continues to load and works if you install a PCI video card.
Bios reflash, changed even another chip.
According to the owner, this happened after the wrong connection of the cabinet fan to the motherboard.
Tell me, please, what to measure and check.
ASUS M2N-E goes through video cards
Hello everyone. Motherboard ASUS M2N-E.
GV-RX26P512H video card works fine in this motherboard.
I want to put ASUS EN9600GT / HTD / 512M / A, and the mother does not see it. Frozen 1 long, 4 short
9600GT Working 100%, in another computer starts normally.
