SiS 655FX Chipset - Page 4

..:: SiS 655FX Reference BIOS ::..

The BIOS that came along with the 655FX reference motherboard holds a similar layout to those that are commonly seen on OEM oriented computer systems, and follows the common Phoenix BIOS layout. When we initially entered into the system BIOS, we found that there were four separate menus that we could choose from, those being Main, Advanced, Security, and Boot. The Main menu that houses all of the more complex settings will be the Advanced menu, which we will be discussing shortly. From the main menu, we can see that our reference motherboard is running off of the 8/20/03 BIOS.

When we enter into the Advanced menu, we find a rather large amount of available options that are offered by the 655FX reference BIOS. Here, we can see that our 3.20GHz Intel Pentium 4 processor is currently running at a slightly overclocked speed of 3.235GHz. Below this, we find the option to either enable, or disable the Hyper-Threading Technology, the now standard tech on all Intel Pentium 4 processors. The next two items we come across deal with the frequency settings for the FSB, and the “performance mode.” If we take a further look towards the FSB settings, we see that we can manually adjust the CPU’s FSB setting in 1MHz increments, and we also have the ability to choose between a plethora of CPU:DRAM clock speed ratios.

As we move further down towards the DRAM section of the Advanced menu, we next come across the various RAM timings that we are used to seeing. The BIOS we had with our 655FX reference motherboard allowed for six separate, preset RAM timing configurations ranging from Safe, to Fast+++. To give you an idea, the Safe timings are 3-4-4-8-3, while the Fast+++ timings are 2-2-2-4-2. Of course, the BIOS also allows for the manual adjustment of the various RAM timings, such as the CAS Latency, RAS to CAS, RAS Precharge, ACT to Precharge, and Write Recovery. The “Refresh Period Control” setting allows us three different selections, Normal, Fast, and Aggressive.

Overall, the settings that are offered by the 655FX reference motherboard BIOS are quite nice, and if these various settings are also implemented on retail models features the 655FX chipset; they could be a good target for the budget enthusiast market. With the available settings we have seen offered, we can easily see how tweakable the 655FX chipset motherboards can indeed become; it’s just a matter of implementation on the motherboard manufacturer’s part. Since these SiS chipsets are typically used for budget end motherboards, you might need to hunt around for one that offers all of these bells and whistles, but I’m sure there will be several options available at your disposal.