Pretty sure you meant "PCI-Express" (or "PCIe") not "PCI-X". PCI-X is the name of an obsolete bus type. Totally agree with your view of the advice given. For

Pretty sure you meant "PCI-Express" (or "PCIe") not "PCI-X". PCI-X is the name of an obsolete bus type. Totally agree with your view of the advice given. For example, TRIM has surprisingly little effect because modern SSDs (Micron) will move cold data to worn cells so that all cells participate in wear leveling. TRIM still saves you some, just nowhere near what you might expect.