Help with OC on my a8n-sli deluxe

[Rakewell]

Greeting fellas,

I'm new to OCing, but I have been reading like crazy and I've just finished OCing my mobo (a8n-sli deluxe), and it's stable thusfar; however, I need a little help. It seems to be underclocking my memory to 333, 3-7-3-3. Here are my specs + settings:

AMD 3500 Winchester
GeIL Value 2GB dual channel ddr 400

Settings:

CPU Freq: 230
PCI E Clock: 100MHZ
DDR Voltage: Auto
CPU Multiplier: x11
CPU Voltage: 1.550 v
PCI Clock sync: To CPU

First of all, could these settings be improved upon? Also, anyone have any suggestions as to what to do with the memory to improve upon this OC?

Thanks guys.

Cheers,

Rakewell

 

[Neurorelay]

In the cpu settings, there is a sub menu for DRAM configuration. It is most likely set on auto. Download cpu-z and check what your 200mhz timings are, then set those manually in the bios. This is assuming your ram can go 1:1 with the cpu at 230 fsb,

 

[Rakewell]

Thanks for the reply!

My dram config was on auto in the BIOS, and cpu-z said my ram was at the following:

Freq: 180.8
FSBDRAM: CPU14
CAS Lat: 3.0
RAS to CAS delay: 3
RAS Prechrg: 3
Cycle time: 7
Bank Cycle: 16
DRAM Idle: 16

So... its not reading as 200MHZ... pardon if its a dumb question, but how do I change this, or is this the 1:1 you were talking about?

...Perhaps I am not comprehending what 1:1 means.

Thanks mate-

Rakewell

 

[Rakewell]

*bump*

 

[GuitarDaddy]

Hi Rakewell, welcome

I've had the same board since it came out in Dec 04, I'll be glad to assist.

When the "max mem clock" under DDR settings is set to auto, the board automatically applies memory dividers once your HTT goes above 217mhz. On A64's when you overclock by raising the HTT you are also overclocking your ram, the dividers allow you to overclock the CPU even if your ram can't overclock.

Heres how the "max mem clock" settings work

DDR400 - this setting keeps your ramspeed equal to the HTT ie.. HTT=240 Ram=240
DDR333 - this setting runs ram at aprox 5/6th the speed of HTT ie.. HTT=240 Ram=200
DDR266 - this setting runs ram at aprox 2/3rd the speed of HTT ie. HTT=300 Ram=200


I will warn you that this board has a 240mhz 1T limit. Which means if you overclock your ram past 240mhz you must use the 2T command rate setting

And make sure the HTT multi is set to 4x, 3x is you take the HTT higher than 250mhz

 

[GuitarDaddy]

Originally posted by: Rakewell
Greeting fellas,

I'm new to OCing, but I have been reading like crazy and I've just finished OCing my mobo (a8n-sli deluxe), and it's stable thusfar; however, I need a little help. It seems to be underclocking my memory to 333, 3-7-3-3. Here are my specs + settings:

AMD 3500 Winchester
GeIL Value 2GB dual channel ddr 400

Settings:

CPU Freq: 230
PCI E Clock: 100MHZ
DDR Voltage: Auto
CPU Multiplier: x11
CPU Voltage: 1.550 v
PCI Clock sync: To CPU This should be set to 33.33mhz. IMPORTANT, this locks your PCI bus

First of all, could these settings be improved upon? Also, anyone have any suggestions as to what to do with the memory to improve upon this OC?

Thanks guys.

Cheers,

Rakewell

 

[Rakewell]

Thanks for your help, GuitarDaddy!

I guess I don't know what I am missing, here; my rig doesn't seem to post on any of the settings you have suggested.

in the BIOS (v. 1015) Under advanced tab, CPU config, I set my Hyper Transport Freq to 4X, and under DRAM Config, I set timing mode to manual, memclock to 400 MHZ and the out-of-the-box settings for the ram of 3-4-4-8. Then, under jumper free, I set the following:

CPU Freq: 233
PCI E Clock: 100MHZ
DDR Voltage: Auto
CPU Multiplier: x11
CPU Voltage: 1.550 v
PCI Clock sync: 33.33

BAM. No post. Am I missing a setting here?

Thanks for all your help-

Cheers,

Rakewell

 

[Neurorelay]

Change your DDR volatage to 2.8. On the auto setting it is most liekly to low to get a clean signal and thus no post.

CPU-Z has a mem tab that says what the cas latency, tras, trcp and so on should be at various fsb setttings. Set yours to read whatever cpu-z says 200mhz should be at.

However, that is a 1:1 match, 200mhz ram. You will most likely need to run your fsb for your memory at the 166 setting and not 200 to get a post.

For example, my cpu runs at 11x, 219mhz FSB, memory at 200mhz, with a cpu and ddr manually set for their voltages. Then the dram is set at 200mhz, 3-8-4-4 timings. I am running 1:1, meaning the ram is at full speed, no dividers.

 

[crazylegs]

Cool this post just answered a few questions i was going to ask before OC my system....

Nice answers GuitarDaddy...!!

p.s. i'll prob be back when i encounter problems during the procedure

 

[Muggy]

Originally posted by: Rakewell
Thanks for your help, GuitarDaddy!

I guess I don't know what I am missing, here; my rig doesn't seem to post on any of the settings you have suggested.

in the BIOS (v. 1015) Under advanced tab, CPU config, I set my Hyper Transport Freq to 4X, and under DRAM Config, I set timing mode to manual, memclock to 400 MHZ and the out-of-the-box settings for the ram of 3-4-4-8. Then, under jumper free, I set the following:

CPU Freq: 233
PCI E Clock: 100MHZ
DDR Voltage: Auto
CPU Multiplier: x11
CPU Voltage: 1.550 v
PCI Clock sync: 33.33

BAM. No post. Am I missing a setting here?

Thanks for all your help-

Cheers,

Rakewell

Then it should be the memory that is the culprit here. Since urs is Value RAM, it may not do 240 MHz. So its better to use the 333 MHz divider and raise the FSB a few notches ( till u hit a wall ) so that the RAM runs at its rated 200 MHz. U could also try to find the limit of ur RAM. Reduce the FSB to its default value and set the RAM to 400 MHz in BIOS and start increasing the FSB in multiples of 3 till the rig does not POST. U could then try pumping more voltage into the memory and see if it goes any further. Once u find its limit, u'll know for sure what u're playing with. U could then use a divider when the FSB goes beyond what the memory is capable of.

 

[Relion]

Originally posted by: GuitarDaddy
Hi Rakewell, welcome

I've had the same board since it came out in Dec 04, I'll be glad to assist.

When the "max mem clock" under DDR settings is set to auto, the board automatically applies memory dividers once your HTT goes above 217mhz. On A64's when you overclock by raising the HTT you are also overclocking your ram, the dividers allow you to overclock the CPU even if your ram can't overclock.

Heres how the "max mem clock" settings work

DDR400 - this setting keeps your ramspeed equal to the HTT ie.. HTT=240 Ram=240
DDR333 - this setting runs ram at aprox 5/6th the speed of HTT ie.. HTT=240 Ram=200
DDR266 - this setting runs ram at aprox 2/3rd the speed of HTT ie. HTT=300 Ram=200


I will warn you that this board has a 240mhz 1T limit. Which means if you overclock your ram past 240mhz you must use the 2T command rate setting

And make sure the HTT multi is set to 4x, 3x is you take the HTT higher than 250mhz

Hmmm....Id say more of a 250Mhz 1T limit ... look sig