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PCI-Express 4.0 vs 3.0 Video Card Performance

Posted on November 30, 2020 by William George

PCI-Express has been the standard for connecting video cards and other expansion devices inside of computers for many years now, and several generations of the technology have now passed. With each of those generations, the amount of data that can be transferred over the PCIe connection has increased. How much impact does that have on modern video cards? Is there any benefit to running a PCIe 3.0 card in a 4.0 slot, or loss if using a 4.0 card in a 3.0 slot?

NVIDIA GeForce RTX 2080 Ti PCI-Express Lane Scaling in OctaneRender and Redshift

Posted on October 15, 2018 by William George

GPU based renderers like OctaneRender and Redshift make use of the video cards in a computer to process ray tracing and other calculations in order to create photo-realistic images and videos. The performance of an individual video card, or GPU, is known to impact rendering speed – as is the number of video cards installed in a single computer. But what about the connection between each video card and the rest of the system? This interconnect is called PCI Express and comes in a variety of speeds. In this article, we will look at how benchmarks for these programs perform across PCI-E 3.0 and 2.0 with x1, x4, x8, and x16 lanes.

Agisoft PhotoScan 1.4.1 – PCI Express Scaling

Posted on April 23, 2018 by William George

PhotoScan makes use of the video cards in a computer to assist with the computation of certain steps. The performance of an individual video card, or GPU, is known to impact the processing speed – but what about the connection between the video card and the rest of the computer? This interconnect is called PCI Express and comes in a variety of speeds. In this article, we will look at how PhotoScan performance scales across PCI-E 3.0 x4, x8, and x16.

Core i7 7820X vs Core i9 7900X: Do PCI-E Lanes Matter For GPU Rendering?

Posted on September 11, 2017 by William George

Benchmark results demonstrating that PCI-Express x8 vs x16 speeds don’t impact GPU rendering performance.

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