I've copied and pasted all the tips it's given me so I figured I might as well post them just in case someone has the time and knowledge to help me decipher them:
Warning W2543 - Memory hole detected may not be required. For legacy reasons (with 16-bit device drivers/hardware), most chipsets allow you to set memory holes in the legacy memory space (either in the 1st MB or between 0 to 16MB) to be used for data transfers. If you do not have such legacy devices, make sure the hole is off.
Fix: Check BIOS settings and disable the hole.
Tip T2546 - Large memory modules (512MB or greater) should be ECC/Parity. Since the probability that a bit will be corrupt is the same or increases with module density, the bigger the module, the bigger the overall probability that you will get one or more corrupted bits. While these modules add an extra delay on partial writes (e.g. less than data width) as parity for the whole line must be re-calculated, the stability will be worth it.
Fix: If you plan on adding more memory, consider replacing the modules with ECC/Parity modules. Do note that running plain and ECC/Parity modules will turn off ECC/Parity for the whole memory array.
Tip T100 - Large memory systems (1GB or greater) should use Registered/Buffered memory, especially if more than 2 are installed on the same channel. This improves signal quality by reducing the load on the chipset channel. While these modules add an extra clock delay due to the on-board buffers (thus CL2 effectively becomes CL3), the stability will be worth it. Server chipsets with many memory slots generally require Registered memory.
Fix: If you plan on adding more memory, consider replacing the modules with Registered/Buffered modules. Do note that you cannot mix Unbuffered and Registered/Buffered modules on the same channel, but you may be able to if the chipset has multiple memory channels.
Tip T223 - CPU speed, under load, lower than rated speed. Check power management settings.
Fix: Unless you specifically want the CPU to run at lower than rated speed (e.g. to reduce power/temperature) you may be using a power setting that does not allow the CPU to reach its rated (maximum) speed even under load.
Check Power Options that you are using the Balanced Plan and that the Maximum Processor State is 100%.
You may also need to check the BIOS to see whether it has a power plan also and that it is set similarly (i.e. the maximum processor state is not limited).
*[The stat sheet thing said it was running at 3.69 GHz. Is that what they mean by "slower" since it's supposed to be 3.7GHz?
btw: I did check power options, and it is balanced/ max proc. state at 100%.
didn't check the BIOS though... because I don't know how
]*
Notice N224 - SMBIOS/DMI information may be inaccurate. This
information is reported verbatim and cannot be checked by Sandra. While
brand-name companies set this information most generic manufacturers use
generic data that is meaningless. This issue generates more technical support
queries than all other issues combined.
Fix: If the information is not correct, check for a BIOS update (clear
DMI pool) or fix any errors using the DMICFG tool provided with the board.
Alternatively, disable Sandra™'s DMI/SMBIOSreporting from module
Options.
Warning W314 - The video BIOS is more than 3 years old. If the video adapter has a flash video BIOS, check whether an update is available and install it. You may gain extra performance or bug fixes.
Fix: If your video card has a flash BIOS check whether an updated version is available from the manufacturer.
Tip T319 - Usually, a refresh rate of 75Hz or more is necessary to completely remove flicker from monitor screens - depending on resolution, the brightness of the display and the person itself. If you have a flat-panel (LCD) display ignore this tip.
Fix: Switch to a higher refresh rate from Control Panel\Display\Display Properties\Settings, click Advanced Properties\Adapter. Choose the highest supported.
Warning W1320 - The latest service pack available for this version of Windows has not been applied.
Fix: Service packs generally contain many fixes as well as support. Unless there is a known incompatibility you should apply the latest service pack.