They aren't common because modern systems use PCIe slots instead, which offer better performance and compatibility.
They aren't common because modern systems use PCIe slots instead, which offer better performance and compatibility.
It seems you're asking about the absence of risers and shot expenders, possibly in relation to costly server components.
I hope he notices the latency, as it's probably the main factor influencing this issue. The actual reason behind this isn't typical.
It's challenging to maintain stable RAM performance when connected directly to a motherboard. The high speeds RAM operates at can make trace patterns and lengths very sensitive to even small changes. Introducing extra length would cause instability and various problems. That's why overclocking-focused motherboards typically have only two RAM slots. Fewer channels ease the load on the IMC, but also reduce the possibility of achieving higher speeds because of a simpler RAM layout.
ddr5 boards are still in development, with varying opinions on their readiness. The performance is constrained by the traces, and only a few years ago MSI made some enhancements to tracing, resulting in noticeable improvements over older DDR4 models. We currently lack the capability to compete with higher-end options.