Tweak3D - Your Freakin' Tweakin' Source!
CPU/BIOS Tweak Guide (Page 4/6)

Written By: Keith "Farrel" McClellan
Posted: February 25, 2000

Tweaking your BIOS Cont.

Memory Hole - This is an archaic setting and should be disabled.

Passive Release - Disabled

Delayed Transaction - Disabled

PNP OS - This should be enabled unless you are running Linux on your system as well as a Microsoft OS. If you are having problems with Plug and Play, disabling this may fix the problems.

Init Display First - Choose PCI or AGP respectively.

KBC Input Clock - This setting has to do with the Super I/O chip and should be set to 16 MHz.

Overclocking your CPU and L2 Cache Latency

Overclocking your CPU and adjusting the cache latency is one of the best ways to increase the performance of your system, but it doesn't come without its costs. Both of these operations will void any warranty you have on your CPU, and possibly on your computer. Not only that, but it is also quite possible that you could permanently damage your computer -- which can cost big bucks. However, even with those concerns, the likelihood of it causing problems if it is done properly is almost nothing.

If you are of the more conservative type, but still want to milk your processor for all it's worth, lowering the cache latency on the processor is your best bet. The default on most modern processors is a latency of 4, however, on almost any chip that has an on-die L2 cache will be able to hit a latency of one without any trouble. On chips with backside L2 cache like the PIIs, older PIIIs, and the older Athlons, messing with this setting is a little bit more dangerous, and may not be quite as successful.

To perform this tweak, go into the CPU speed selection area in your BIOS. Before you continue, you will need to find out what speed your processor is running at, what its clock multiplier is, and what FSB speed it is running on. Why? Well, simply put, you will need to manually enter the values to be able to mess with the Cache latency. Once you are in the section, set the CPU speed to "User" or it's equivalent, and set the CPU up properly inputting the FSB speed and multiplier. Then go down to the Cache Latency section and change the setting. By default it should be set to four, so you are going to want to set it lower than that.

If you don't have the options to adjust the L2 cache latency in your BIOS, you can download WCPUL2 here.

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