De mannen van iXBT-Hardware hebben een review klaar liggen van de Tyan S1854 Trinity 400 moederbord. Dit plankje is gebaseerd op de VIA Apollo Pro 133A chipset en bleek erg goed te presteren t.o.v. de i820 chipset. Helaas heeft Tyan geen rekening gehouden met overklokkers, die dan ook weinig plezier aan de S1854 Trinity 400 zullen beleven:
However, Tyan S1854 Trinity 400 doesn't have any specific functions for overclocking. There is no way to set manually the AGP and PCI dividers as well as to change Vcore and Vio (memory chipset and AGP voltage). Moreover, there is one more especially upsetting thing: it appears absolutely impossible to clear the CPU settings in BIOS if you overclock the CPU too high and the mainboard doesn't boot at all. In this case you will have to open the case and to clear CMOS settings with a jumper.
But this is also not the very end. The gravest problem about the processor overclocking on S1854 Trinity 400 is the AGP divider. To set it the mainboard uses the info about FSB frequency provided by the CPU. It means that if we install Intel Celeron, then the AGP frequency will be always equal to FSB frequency no matter which FSB frequency we had in BIOS Setup beforehand. The same thing happens if we install a 100MHz CPU: the AGP frequency will always be equal to 2/3 of the FSB. And only if the processor used is intended for 133MHz FSB, we will get AGP equal to 1/2 of the FSB frequency.