Memory Issues - TYAN THUNDER X Manual

In addition to a dual CPU aware O/S, you will also need an application that
utilizes dual CPUs. These programs usually fit into the CAD, Animation, or
Graphic Design categories and include such programs as Kinetix 3D Studio
MAX, Microsoft's Soft Image, Adobe Photoshop, and Alias/Wavefront's
Maya. If you have any questions as to whether or not your application
supports dual CPUs, please contact the software publisher or your reseller.
Q: When I turn the computer on, the system displays strange CPU speeds.
A: The solution to this is to first check that you have the correct CPU jumper
settings. CPU speed jumpers can be found in the Chapter 2. Next, verify
that your CPU is indeed what you ordered. If you order a 450MHz CPU,
make sure it's not a 400MHz CPU. Overclocking may also play a role in
strange CPU speed behavior. NEVER overclock a CPU. Overclocking may
damage your CPU, system, or both and will void your warranty. If you
have an older sound card, try moving the sound card to the ISA slot
at the edge of the board. This will resolve most problems, but if this fails,
it's possible that there may be a problem with the motherboard's clock
generator. Return the motherboard to the dealer for repair or replacement.

4 - Memory Issues

Q: Can I mix brands, types, and speeds of RAM?
A: It isn't a good idea to mix brands, types, and speeds of RAM because all
Tyan motherboards are produced with performance in mind. When we talk
about performance, it goes hand in hand with tolerances which must be met
in order to reach the performance levels expected of high quality peripher-
als. When you mix memory types, brands, or speeds on any high perfor-
mance board, these timing issues may play a significant role in the stability,
reliability and performance of the entire system. This is why we recommend
using a single type of DIMM brand, speed, and type (particularly unbuf-
fered). Adding different banks of DIMMS of different sizes is fine.
Q: Why don't I get a display after I put in my old DIMM module?
A: The 440GX chipset requires the memory manufacturer to program an
EEPROM chip with SPD (Serial Presence Detection) on the module in order
for the BIOS to program the 440GX's timing registers properly. Your DIMM
may not have the EEPROM chip on the module, or the EEPROM may not
contain the correct program. Check with your memory vendor for details.
http://www.tyan.com
A-5