What is the difference between PCI Express and PCI Express 2.0?

PCI Express 1.1 was actually introduced in order to meet the requirements of the I/O platforms and actually did not support enriched graphics-based applications, but PCI Express 2.0 supports both the I/O platforms and the enriched graphics-based applications.

The PCI Express 2.0 offers double bandwidth when in comparison with PCI Express 1.1. The per-lane throughout of the PCI Express 2.0 is 500MB/s, while it is 250MB/s in the case of the PCI Express 1.1. While PCI Express 2.0 slots can support 150 watts, PCI Express 1.1 slots can only sustain about 75 watts.

The PCI Express 2.0 standard makes it possible for the limits of slot power to vary or change, while the PCI Express 1.1 does not possess this characteristic feature. The PCI Express 2.0 standard includes all the features present in PCI Express 1.1, while the latter, of course, does not possess many features present in PCI express 2.0.

PCI Express and PCI Express 2.0 are related to the field of technology. They are both I/O platforms. One of the differences between them is how long they have been around. PCI Express is older and has been around longer.

PCI Express 2.0 is newer, and it was released as a way to improve areas that PCI Express lacked. Another difference between the two is how they are used. Between the two, PCI Express 2.0 is mainly used for applications that are based on graphics.

They also differ with the amount of MB/s they can support. PCI Express has support limited to 250MB/s, while PCI Express 2.0 can support up to 500 MB/S.

The PCI Express 1.1 was introduced to meet the requirements of I/O platforms but will not be able to support applications that are purely graphic based. PCI Express 2.0 will be able to support graphics-based applications. The watts that will be supported by PCI Express and PCI Express 2.0 are also different.

PCI Express will be able to sustain 75 watts while PCI Express 2.0 will support up to 150 watts. The throughput that will be given will also be different for both. Expect to get a throughput of 500 MB/s, and it will be 250 MB/s for PC Express 1.1. The PCI Express 2.0 will have slot power limits that can be changed whenever they need to.

Although both PCI Express and PCI Express 2.0 are used on I/O platforms, however, there are some differences between the two. PCI Express is the older of the two, while PCI Express 2.0 was developed to improve on areas where PCI Express has not been providing optimal results.

PCI Express 2.0 is used mostly for graphic-based applications since it has the required bandwidth, unlike PCI Express that does have the required bandwidth. When transferring data through a system, PCI Express can support up to 250MB/s while it can go as high as 500MB/s with PCI Express 2.0. The slots in PCI Express 2.0 can support up to 150 watts, whereas the ones in PCI Express can only support up to 75. Another advantage of PCI Express 2.0 over PCI Express is that it contains all the features of PCI Express plus other features that cannot be found in PCI Express.