SiSoftware Sandra (the System ANalyser, Diagnostic and Reporting Assistant) is an information & diagnostic utility. It should provide most of the information (including undocumented) you need to know about your hardware, software and other devices whether hardware or software.
Sandra is a (girl) name of Greek origin that means "defender", "helper of mankind". We think that's quite fitting.
It works along the lines of other Windows utilities, however it tries to go beyond them and show you more of what's really going on. Giving the user the ability to draw comparisons at both a high and low-level. You can get information about the CPU, chipset, video adapter, ports, printers, sound card, memory, network, Windows internals, AGP, PCI, PCI-X, PCIe (PCI Express), database, USB, USB2, 1394/Firewire, etc.
In regards to bandwidth the Black Edition reacts slightly better to higher frequencies over tighter timings. A combination of tighter timings and good frequency allows for slightly better performance and lastly the highest overclocking profile gives better cache performance overall. In all these tests the Black Edition accelerates past the slower rated Mushkin example. So with a combination of tighter timings and good frequency overclock the Black Edition can be encouraged into providing even better results no doubt.