i wanna do a self-tutorial for this overclocking stuff but i have no idea what half these terms mean i know what front side bus is but what does it do? also how does memory affect your overclocking capabilities to get the maximum out of it. Stuff with voltages as well, which pumps more power into the cpu making it run at higher speeds, also now that the cpu is hotter because of higher voltages where is the mass of the heat being produced is it spread over the entire chip causing the hsf to work less efficiently. also things about cfm, fan speeds, multipliers, pci/agp locking why does it get raised with the fsb causing instability, cpu hardlocks non-posts, what is cache and does a higher level cache mean a better cpu. i know i can read tutorials but i think its better if i test the [H]'s knowledge before i dive in the oc's world and make my own pamphlet on what is correct/incorrect clocking methods. I hope you guys help me out, i wanna see if i can make an essay/article up for newbie's or something. thanks
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Looking for OC terms/reasons for Self Tutorial
- Thread starter Qwertyman
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rogue_jedi
Supreme [H]ardness
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- Sep 6, 2002
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lessee here...
the front side bus is the speed at which the cpu talks to the rest of the system, basically the northbridge and the memory/southbridge/pci/IO ports/etc. through the northbridge. this changes slightly on nforce3 motherboards, in that the memory is connected directly to the cpu, and the southbridge is integrated with the northbridge, and the cpu/northbridge connection is made by the Hypertransport (HT) bus.
memory affects your overclocking capabilities because it limits the fsb you can obtain. if you have overclockable memory, you can run high fsb at a 1:1 divider, granting better performance (a lot better on athlon systems, because the fsb it only doubled, not quap-pumped, to there are less cycles to sync with the memory) the divider (1:1, 5:4, 4:3, etc) affects how the memory speed compares to the fsb. for example, running 250fsb with a 5:4 divider gives you a memory speed of 200mhz (DDR400/pc3200).
that's enough from me for now. (more later when i get more bored)
the front side bus is the speed at which the cpu talks to the rest of the system, basically the northbridge and the memory/southbridge/pci/IO ports/etc. through the northbridge. this changes slightly on nforce3 motherboards, in that the memory is connected directly to the cpu, and the southbridge is integrated with the northbridge, and the cpu/northbridge connection is made by the Hypertransport (HT) bus.
memory affects your overclocking capabilities because it limits the fsb you can obtain. if you have overclockable memory, you can run high fsb at a 1:1 divider, granting better performance (a lot better on athlon systems, because the fsb it only doubled, not quap-pumped, to there are less cycles to sync with the memory) the divider (1:1, 5:4, 4:3, etc) affects how the memory speed compares to the fsb. for example, running 250fsb with a 5:4 divider gives you a memory speed of 200mhz (DDR400/pc3200).
that's enough from me for now. (more later when i get more bored)
rogue_jedi
Supreme [H]ardness
- Joined
- Sep 6, 2002
- Messages
- 4,821
so i get bored quick 
here's more:
multipliers: multipliers are simple. they are basically a plier with some blades and/or screwdrivers and other tools built into the handles. an example is a leatherman.
really, a multiplier adjusts the cpu frequency as it relates to the fsb. the multiplier works with the unmodified fsb, so for example on a p4 2.4C, though it has an fsb of "800mhz", the true fsb is only 200mhz, so the multiplier is 12. they are useful if your memory is not up to snuff when it comes to overclocking, because you can speed up your processor without needing to push the memory any. however, many chips these days are 'locked', meaning the multiplier is not adjustable. the main sources of unlocked chips are mobile athlons (not the 64s, however) and the athlon fx. from intel, the only way to get an unlocked p4 is to buy an engineering sample on ebay or some other source. an unlocked intel is rare indeed.
pci/agp lock: if you have a choice between a motherboard without a pci/agp lock and one with a pci/agp lock, get the one with it if there is any possibility that you will be overclocking in the future. pci/agp lock (i guess i'll call it PAL from now on) is crucial for stable overclocking. if the PAL is not present, adjusting the fsb away from it's default value (whatever it is) to something other than other fsb's that chips in that line run at (for athlon XPs, 100/133/166/200) will result in the pci speed going out of spec. this can cause hdd corruption and also graphical instability, especially with an ATI video card as they are more sensitive to the change in speed than an nVidia card. also, some sata controllers stop working much sooner than pata controllers when the pci speed goes out of spec. avoid raising the pci bus speed from its default of 33mhz (this is shown as the agp speed, 66mhz, and referred to as such on most motherboards) if possible.
the pci speed works with a divider, so the pci:fsb ratio changes based on which one is selected on motherboards without PAL. at 100fsb, the divider is 3, ass 133 it is 4, 166 5, and 200 has 6 as its multiplier. the multiplier can be manually adjusted, or automatically adjusted by the motherboard to keep the pci/agp speed as close to spec as possible. earlier kt400 (and possibly kt400a) chipsets did not have the /6 divider implemented properly, so 200fsb was not possible. the kt600 fixed it, however.
more later, if someone else doesn't get to them first.
here's more:
multipliers: multipliers are simple. they are basically a plier with some blades and/or screwdrivers and other tools built into the handles. an example is a leatherman.
really, a multiplier adjusts the cpu frequency as it relates to the fsb. the multiplier works with the unmodified fsb, so for example on a p4 2.4C, though it has an fsb of "800mhz", the true fsb is only 200mhz, so the multiplier is 12. they are useful if your memory is not up to snuff when it comes to overclocking, because you can speed up your processor without needing to push the memory any. however, many chips these days are 'locked', meaning the multiplier is not adjustable. the main sources of unlocked chips are mobile athlons (not the 64s, however) and the athlon fx. from intel, the only way to get an unlocked p4 is to buy an engineering sample on ebay or some other source. an unlocked intel is rare indeed.
pci/agp lock: if you have a choice between a motherboard without a pci/agp lock and one with a pci/agp lock, get the one with it if there is any possibility that you will be overclocking in the future. pci/agp lock (i guess i'll call it PAL from now on) is crucial for stable overclocking. if the PAL is not present, adjusting the fsb away from it's default value (whatever it is) to something other than other fsb's that chips in that line run at (for athlon XPs, 100/133/166/200) will result in the pci speed going out of spec. this can cause hdd corruption and also graphical instability, especially with an ATI video card as they are more sensitive to the change in speed than an nVidia card. also, some sata controllers stop working much sooner than pata controllers when the pci speed goes out of spec. avoid raising the pci bus speed from its default of 33mhz (this is shown as the agp speed, 66mhz, and referred to as such on most motherboards) if possible.
the pci speed works with a divider, so the pci:fsb ratio changes based on which one is selected on motherboards without PAL. at 100fsb, the divider is 3, ass 133 it is 4, 166 5, and 200 has 6 as its multiplier. the multiplier can be manually adjusted, or automatically adjusted by the motherboard to keep the pci/agp speed as close to spec as possible. earlier kt400 (and possibly kt400a) chipsets did not have the /6 divider implemented properly, so 200fsb was not possible. the kt600 fixed it, however.
more later, if someone else doesn't get to them first.