PCI 4.0 vs. 3.0: is it time to update your primary card?

PCIexpress (PCIe) is one of the most important technologies in the cards main modern, which helps make the most of the SSD faster with more powerful graphics cards. PCIe 4.0 is still not much use, but has great potential. PCIe 3.0 has the installed base bigger until even 2020. Do you feel lost among so much technology terminology? Don’t know if you should upgrade your computers? It is normal, do not worry: here we will explain the advantages and disadvantages of PCI 4.0 vs. 3.0.


PCIe 3.0 has been available in a large number of master cards since 2010, and continues to be the port for PCIe with the installed base bigger even in 2020. It is located in the master cards of the series 300 and 400 for the processors Ryzen first and second generation of AMD as well as Intel cards and the 300 series used for their processors the eighth and ninth generation. It is also found in most of major cards released for a few years before these generations of processors.

PCIe 4 made its debut with the processors Ryzen third-generation of AMD in their master cards of the 500 series, specifically with the chipset x570. At the beginning of 2020, the only master cards that support PCIe 4 are based on the chipset AMD x570.

Intel has not made any official engagement with the bracket to the PCIe 4 card major support, though has launched their own SSD PCIe 4. Some rumors have suggested that Intel made its debut PCIe 4 with their processors Comet Lake of the tenth generation, but due to problems to implement it, Intel had to reject the role, according to Toms Hardware. Meanwhile, our own reports have revealed internal documents that confirm that the new cards main graphics Xe Intel used PCIe-4.

However, the master cards may still be technically compatible, so that it may be that when the processors of the next generation of Rocket Lake debuten in 2021, the existing plate of Comet Lake can get the feature with an update.

Another speculation says that Intel may skip PCIe 4 completely and, in change, boost the PCIe 5 recently standardized with future generations of processors.


PCI 4.0 vs 3.0

The biggest advantage of PCIe 4 PCIe 3 is its speed or bandwidth general. Like generations of PCIe earlier, to PCIe 4 effectively doubles your bandwidth with respect to the last generation, increasing the bandwidth per lane to 2 gigabytes per second (2GBps). With options for slots 1x, 2x, 4x, 8x, and 16x, this increases the bandwidth maximum potential for a PCIe slot 4 to 64GBps.

This gives everything that connects to a PCIe slot more free space, but for more powerful graphics cards, that’s not really necessary yet. The 2080 You, the graphics card conventional most powerful ever created, it is not close to saturating a PCIe slot 3 x16, only see a bottleneck on the PCIe slots 3 x8, as demonstrated by TechPowerUp in their testing of 2018.

Where you can take full advantage of this additional bandwidth is with other types of additional cards. More specifically, storage, multiple drives, SSD PCIe 4 NVMe can function in configuration with a RAID 0 to offer read/write speeds sequential up to 15 GBps.

Additional lanes and support

With little real world tasks that can take advantage of the full bandwidth of the PCIe slots 4 x16, the main advantage of this is, at least in the foreseeable future, will be the reduction of the requirements of the lane to devices and master card additional. In place of a card 10-Gigabit network that requires multi-lane PCIe 3, you can get away with only one slot 1x. The cards main cards may operate at speeds PCIe 4 x8, enjoying the same bandwidth that the PCIe slots 3 x16, but with half the number of lanes used.

These additional lanes can be released for additional devices on bigger building, or to allow faster devices to operate in PCIe slots smaller systems more compact.

The support plates are not limited to PCIe devices 4 as these are fully compatible with previous versions, which means that any device PCIe previous generation, whether first, second or third generation, will work fine with PCIe 4.

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