Errors when attempting to OC a 2100+

[KuRnUp]

Allright, so i gots an xp 2100+ t-bred b. I also have an a7n8x dlx. the one thing that i dont have very nice of in my comp is ram: Kingston valueram (3x)256 2100 DDR.

First of all, does ram matter when trying to overclock the cpu....i think i just thought what my prob may be, but its just a guess.

So anyways, im running overclocked right now, with the multiplier up a little, 14x i think. it runs fine, but then, when i try to up the FSB to 266, it wont start windows xp without stating some sorft of error or corruption in data. Do i need to overclock my ram to the same bus speed as my cpu, or what? am i changing the wrong settings in the bios. (i did make sure to up the vcore voltage, its something like 7.5v)

At this rate, i max out with overclocking at 1.8GHz, and i want to go higher than that for sure. Sry if this is all like basic knowledge, but this my first home-built rig, and therefore my first O/C'ed rig.

Thanks a lot for your help.

 

[bgeh]

Originally posted by: KuRnUp
Allright, so i gots an xp 2100+ t-bred b. I also have an a7n8x dlx. the one thing that i dont have very nice of in my comp is ram: Kingston valueram (3x)256 2100 DDR.

First of all, does ram matter when trying to overclock the cpu....i think i just thought what my prob may be, but its just a guess.

So anyways, im running overclocked right now, with the multiplier up a little, 14x i think. it runs fine, but then, when i try to up the FSB to 266, it wont start windows xp without stating some sorft of error or corruption in data. Do i need to overclock my ram to the same bus speed as my cpu, or what? am i changing the wrong settings in the bios. (i did make sure to up the vcore voltage, its something like 7.5v)

At this rate, i max out with overclocking at 1.8GHz, and i want to go higher than that for sure. Sry if this is all like basic knowledge, but this my first home-built rig, and therefore my first O/C'ed rig.

Thanks a lot for your help.

the 2100+ default FSB is 133. so by going to 266 you are trying to x2 the speed of your chip
if the vcore voltage is 7.5v, you would smelling smoke in your room now

 

[cow123]

(i did make sure to up the vcore voltage, its something like 7.5v)

i think u need more voltage !

 

[Shimmishim]

ok ok

joking aside...

vcore of 7.5 doesn't exist... the highest should be 2.15....

also you can't set your ram to a fsb of 266, it'll make bad things happen...

you have ddr ram which means data sent is doubled so when you're running a fsb of 133 it is actually 266....

clock speed = fsb x mult so.. yours is 13 x 133 = 1739

if i were you, i'd up your multiplier because i dunno how high your ram will let you go

pc2100 = 133
pc2700 = 166
pc3200 = 200
pc3500 = 217

good luck!

 

[KuRnUp]

okok, PERFECT, i understand all that now, thx a bunch. just one more question. i have 2100 ram, how does that effect the amount of overclocking i do. my impression was that i needed 2700 ram to take my fsb to 266. is this so?

 

[bgeh]

it will affect your overclocking but you can increase the multiplier to get around it
DDR RAM runs at 133, but since it does it twice in every electrical signal, bandwidth is doubled
so you get 133 x 2 =266=266FSB

 

[KuRnUp]

if i were you, i'd up your multiplier because i dunno how high your ram will let you go

pc2100 = 133
pc2700 = 166
pc3200 = 200
pc3500 = 217

this is what i dont understand. how does ram effect my overclocking of the CPU, or does it??? my multiplier only goes up to 14, which is where it is right now, and its only running at about 1.8Ghz. i dont get it.

 

[adeno]

Since you said you had pc2100 ram, depending on the quality of your modules, you may not be able to get much further from its standard speed of 133 MHz (266 MHz DDR).

RAM affects overclocking because generally, Front Side Bus speed (FSB) is synchronous to RAM speed (some motherboards allow FSB and RAM to run asynchronous.. which is generally a bad idea with AMD systems). FSB is the speed at which the CPU interacts with the RAM. The actual calculation of CPU speed is FSB speed x CPU multiplier.

You said you were running a 14x multiplier.. so with 133 MHz FSB, that would be 133 x 14 = 1862 MHz. So play around with different settings.. increasing multiplier or increasing the FSB (or RAM speed) will get you higher CPU frequencies.

Hope this at least helps a little.

 

[Duvie]

First off 266fsb is wrong and if the board allows it ofcourse it wont start...A true 266fsb would be equivalent to a 533mhz ddr fsb....The fsb is dual pumped like the DDR and thus the default fsb for that 2100+ is actually 133fsb which equates to 266mhz ddr when it is dual pumped....


Your ram effects your oc by limiting it if the fsb gets too high....PC2100 or 266mhz ddr is 133x2 (the 2 being because DDR stands for Dual Data Rate which means it does twice as much per cycle by reading on the high and low of the clock cycle) which runs perfectly in synch with a 133fsb....

Therefore:

133fsb = 266mhz ddr or pc2100
150fsb = 300mhz ddr pr PC2400 (many pc2100 sticks can get to this level at default vdimm)
166fsb = 333mhz ddr or PC2700 (not all pc2100 can make it here but many can with a boost of vdimm to 2.7v)

The default or lowest mem ratio for that board I believe is 1:1 which means it matches the fsb of the cpu...Therefore you may need to run the multipler as high as it can go and then try to couple that with as much a fsb boost as possible....

It is likely your board may not like that multipler and there are certain quirks like that...If you cant do 134fsb for memory speed then that would be the crapiest PC2100 I have ever seen.....

Check you r settings and male sure the ram is set to 1:1 or host clock and the timings are set to spd or normal for now...