AMD 762 Chipset Tweaking (MP/MPX) Guide - PAGE 1

In this article we are going to look at improving the performance of the AMD's 760MP/MPX chipset which is designed for multi processor use. We have been digging into the white papers on this chipset over the past week to try and find out every last thing we could about this chipset and then figure out how all of you power hungry madmen with the duallies can make it run even faster! If you've been around this site for very long you know all about chipset registers by now.

Please be warned that if something is set wrong it can and will cause windows to crash. Generally when you set something wrong it'll either automatically restart or you will have to press the reset button. If you do not know what one of the settings do then it is probably best that you don't change it ;)

A little lesson in chipset workings:

A LOT of the registers are nearly identical to those that are in the AMD 761 Northbridge. I did find 1 SMP related tweak that determines read ahead data but for the most part this is going to be like our AMD 761 chipset tweaking guide written by Lee. The 762 PCR file is also based on his PCR. I went over every register setting and made sure that they were the same and changed them where necessary.

Since a good amount of the tweaks here are memory related you should have an understanding of what they do. I wrote an article covering this kind of things and posted it here. Please keep checking it for updates because I'll continually be updating it with more DDR timings as I can.

What are the registers?

The chipset registers are pretty simple, they are memory locations in the northbridge that control the way it behaves. They control every aspect of the northbridge. Now as the northbridge is responsible for controlling the CPU, the memory bus, the AGP bus and the PCI bus, then its a pretty important part of your computer. The chipset registers are usually set by the BIOS at the time of boot-up, but by using some very useful pieces of software we can override these settings from Windows. This will help you find the maximum settings for your hardware without having to continually reboot. Of course when you set something too high your system will crash! Also some of the cheaper motherboards out there don't have all of the tweaks that are supported by the chipset. If that is the case this is the only way that you'll be able to make your system perform like you want.

What sort of things can be changed?

You can change pretty much every setting available in the BIOS plus some more that aren't. You can change all the memory settings, RAS, CAS and so on. You can change your AGP aperture size, change AGP modes from 4x to 2x or 1x...and more.