UL Benchmarks has included another PCI Express test to 3DMark without a moment to spare for the arrival of AMD’s third-generation Ryzen processors and going with X570 motherboards. Definitely, users who upgrade to or build a new PC around AMD’s most current hardware will see the best outcomes. That is on the grounds that the X570 chipset introduces support for PCIe 4.0. It offers double the data transfer capacity as PCIe 3.0, which in turn allows for quicker graphics and storage, to an extent.
Try not to put a ton of stock in the benchmark results, however. Even UL Benchmarks admits that as in accordance with the real-world performance, the PCIe bus is not much of a bottleneck for designs and gaming.
“In real-world use with today’s rendering pipelines, a PC’s gaming execution is probably not going to be constrained by PCIe bandwidth. Nevertheless, expansion in transfer speed that PCIe 4.0 brings is certain to open up new conceivable outcomes with future hardware,” UL Benchmark says.
The new test is intended to measure data transfer capacity that is accessible to your GPU over the PCIe interface. Different things get in the way, so you’ll never hit the theoretical maximum that PCIe 4.0 or 3.0 (or whatever you’re running) offers.
In any case, the test plans to make bandwidth the limiting factor for performance. The manner in which it approaches this is by uploading a large amount of vertex and texture data to the GPU for each edge.At the point when it’s done, it spits out an average bandwidth result.
“The 3DMark PCI Express component test offers an accurate and reliable approach to compare bandwidth across PCIe generations and measure the performance of various hardware configurations,” UL Benchmark says.
For reference, here’s an overview of the diverse PCIe specs, including when they were presented and the full-duplex bandwidth each one provides:
- PCIe 1.0 (2003): 2.5GT/s transfer rate, ~8GB/s x16 data transfer capacity
- PCIe 2.0 (2007): 5.0GT/s transfer rate, ~16GB/s x16 data transfer capacity
- PCIe 3.0 (2010): 8.0GT/s transfer rate, ~32GB/s x16 data transfer capacity
- PCIe 4.0 (2017): 16.0 GT/s transfer rate, ~64GB/s x16 data transfer capacity
- PCIe 5.0 (2019): 32.0 GT/s transfer rate, ~128GB/s x16 data transfer capacity
I ran the test on a setup with an Intel Z97 motherboard and got a consequence of 6.53GB/s. Joanna additionally ran the test, yet on an AMD X470 motherboard, and got a result of 13.12GB/s.
That’s a sizeable disparity, particularly since both PCs support PCIe 3.0 x16. I likewise have a Sound Blaster ZxR sound card installed, however no M.2 drives. At this early stage, it’s hard to tell if something is not right with the setup, or if either/both of our outcomes are ordinary.
I’ve connected with UL Benchmarks for additional info and will update this article when I hear back. Meanwhile, 3DMark Advanced and Pro owners can seize the PCIe test for free. It’s not accessible in the free version of 3DMark, unfortunately, however the Advanced version is at present discounted for $4.49 (down from $29.99).