Help with OC

[ixelion]

I recently installed an addition 2x512 kit for a total of 2GB ram, however since I populated 4 DIMMs I am unable to get the OC to work like it use to.

If I take the FSB directly to 250 the comp would not boot and will automatically reset the FSB back to 200.

However if I gradually increase it by 10mhz or so I can boot it at 250 FSB but it doesn't stick, next time I restart it resets back to 200.

So I think I can get it to work by changing some BIOS settings, memory timing, voltages? I have no idea what to try to get it to work.

PS I am using a memory divider (memory at 166mhz, 200Mhz after OC) on an Athlon 64 setup. Everything used to work perfectly before I installed the RAM.

Thanks!

 

[Mr Fox]

Originally posted by: ixelion
I recently installed an addition 2x512 kit for a total of 2GB ram, however since I populated 4 DIMMs I am unable to get the OC to work like it use to.

If I take the FSB directly to 250 the comp would not boot and will automatically reset the FSB back to 200.

However if I gradually increase it by 10mhz or so I can boot it at 250 FSB but it doesn't stick, next time I restart it resets back to 200.

So I think I can get it to work by changing some BIOS settings, memory timing, voltages? I have no idea what to try to get it to work.

PS I am using a memory divider (memory at 166mhz, 200Mhz after OC) on an Athlon 64 setup. Everything used to work perfectly before I installed the RAM.

Thanks!

Is the RAM the Same Make and Timimgs of the Original Set ?

Also need to know alot more : MOBO ? BIOS Ver ? Drivers that are Installed ? ETC ETC...


If it isn't Broke.......... Leave It Alone !!


Mr Fox

 

[imported_Tick]

Some boards, for what ever stupid reason, don't like to OC with 4 dimms installed.

 

[n7]

Athlon 64s in general don't work well with 4 dimms. I have personal experience with that too.

If you are running things in 1T, change that to 2T.

Depending on what CPU you have, you might also have to lower the frequency to the 166 divider.

 

[ixelion]

Is the RAM the Same Make and Timimgs of the Original Set ?
Also need to know alot more : MOBO ? BIOS Ver ? Drivers that are Installed ? ETC ETC...

The brand and timings are the same but the chips are different, 2 of them are "Infenion" the other 2 are "Kingston K"

My mobo is Soltek K8TPRO 939, im using the latest BIOS 1.6 and am also using the latest drivers for everything (not using CnQ)

If you are running things in 1T, change that to 2T.

Already using 2T system wont boot with 1T.

So I want to do this because it will have an impact on my upgrade options:

1. Keep my CPU at stock and only upgrade GPU (x1950pro AGP) and later on swap the CPU for X2

2. Replace mobo with PCI-E and (hopefully) OC CPU to 250FSB (so wont upgrade to X2 later on) and get next gen video (G80, R600 whatnot)

Mind you my system is barely a year old, and i'm still hoping I can get my OC to work on my current mobo in which case I can forget option 2 all together.

 

[myocardia]

Originally posted by: ixelion
Already using 2T system wont boot with 1T.

So I want to do this because it will have an impact on my upgrade options:

1. Keep my CPU at stock and only upgrade GPU (x1950pro AGP) and later on swap the CPU for X2

2. Replace mobo with PCI-E and (hopefully) OC CPU to 250FSB (so wont upgrade to X2 later on) and get next gen video (G80, R600 whatnot)

Mind you my system is barely a year old, and i'm still hoping I can get my OC to work on my current mobo in which case I can forget option 2 all together.

You need to choose option #3: take back, send back those new 512Mb sticks, and buy two sticks of 1GB RAM. Then, either sell the 2x512MB original sticks, or keep them as backups.

 

[ixelion]

You need to choose option #3: take back, send back those new 512Mb sticks, and buy two sticks of 1GB RAM. Then, either sell the 2x512MB original sticks, or keep them as backups.

a 2x1024 kit would cost me $260 CDN there is probably cheaper somewhere else, but $200 is not worth only 400mhz increase on the CPU. I might as well use the $200 for an x2 3800+

 

[betasub]

Originally posted by: ixelion
PS I am using a memory divider (memory at 166mhz, 200Mhz after OC) on an Athlon 64 setup. Everything used to work perfectly before I installed the RAM.

That 166 memory divider is causing your memory to run slightly above 200MHz if you are pushing the FSB/HTT above 240MHz. Your original pair of DIMMs can handle this slight overclock, but either the new DIMMs can't or the A64's memory controller can't handle 2 DIMMs per channel at your current settings.

You could try reducing your memory timimgs (e.g. 3-3-3-8-2T) manually, or use a lower divider (e.g. 133), or give a small voltage boost to your vDIMM or vCORE (depending on whether its the DIMMs or the memory controller that's limiting).

 

[ixelion]

setting the memory to 133 worked my OC works and is stable thanks to betasub!!!!

No my only concern is that my memory is only running at 160Mhz so which is faster

1. 2.2 Ghz with RAM at 160Mhz
2. 1.8 ghz with RAM at 200Mhz

I think this means that the problem is with the memory controller since both the mobo and the ram are able to go 206Mhz without problem, in which case upgrading my mobo would not fix this.