Intel shows that pcie 4.0 doesn't mean anything to gamers
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PCIe 4.0 is about to debut on the AMD platform when Ryzen 3000 processors are released and, most importantly, when X570 motherboards debut.
Intel downplays PCIe 4.0 for gamers
AMD's next series of Radeon 5700 graphics cards, powered by the Navi GPU, will also be the first to support PCIe 4.0. PCIe 4.0 means that the bandwidth is doubled compared to PCIe 3.0, so graphics cards will have higher bandwidth and so will SSDs.
We know that AMD will be the first to adopt the PCIe 4.0 standard and that Intel will stay out of the equation, at least until a new generation of processors and motherboards.
Ryan Shrout, Intel Chief Performance Strategist, recently commented on the impact of PCIe 4.0 right now for gamers, ensuring that no tangible improvement will be seen.
To argue this, Shrout shared graphics showing the total signal bandwidth (Gbps) for those using displays with 1920 × 1080, 2560 × 1440, and 3840 × 2160 resolution.
The graphics (Above) show that none of these popular screen resolutions fully saturates the PCIe Gen3 x16 interface. Those with a 4K and 144Hz 10-bit HDR setup will need to run on PCIe 3.0 x8, not to mention PCIe 3.0 x16. This is why many of the initial 'real-world' PCIe 4.0 demos are being done on workstations performing content creation on an 8K display with a refresh rate of 120Hz. Today's gaming platforms and even first-generation PCIe 4.0 gaming platforms don't take advantage of all the available bandwidth.
Intel also conducted external tests, where they tested more than a dozen games in different configurations with PCIe 3.0. As you can see, only very small performance gains were made by going from the PCIe Gen3 x4 (31.6 Gbps) interface to the PCIe Gen3 x16 (126.4 Gbps) interface with a 4K display. The transition to the PCIe Gen 4 x16 (252.8 Gbps) interface will likely only offer small, if any, performance gains for those playing on 4K or lower screens.
Visit our guide on the best graphics cards on the market
The only area PCIe 4.0 seems to be ready to master is storage. PCIe Gen4 will certainly improve sequential read and write performance and Intel does not question that.
Intel is trying to take something of importance off PCIe Express 4.0, as they still can't support it on their platform and the competition if it will. Although the evidence seems irrefutable, this is not the case for SSD storage, which will be fully benefited with greatly improved read and write speeds.
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