How to get past 2.35ghz with A64?

Been struggling to get past 2.35ghz for awhile then I decided to remove one stick of ram. After that I was able to OC to 2.42 with my ram at around 484mhz, that was great! So then after reading about bios version 1009 supporting the 400mhz ram speed I decided to go backwards to the 1009 and add back my second stick, downside, back to 2.35ghz! I have tried reducing the CPU multi to 8 and bumping up the FSB slowly but still does not boot. Also, I swapped out the DIMMS just to make sure that one wasn't bad and they both would go all the way up to almost 490mhz independantly, so I ruled out a bad DIMM. I even tried running on the divider of 333 with no luck. It seems as though once I add back that second stick of ram it won't go past 235FSB no matter what I do. The good news is after downgrading to bios version 1009 I can run at 470mhz whereas before I could not get past 333mhz. Heat is not a problem.

Based on this limitation, wouldn't it be better to have my cpu running at 2.35ghz with 2gigs of ram running at 470mhz or the cpu running at 2.42ghz with 1gig of ram running at 484ghz? Also, what would cause my CPU to hit the ceiling of 2.35ghz by just adding the other matched paired stick of ram?

System specs:
Athlon 64 3000+ Newcastle/CG stepping
Asus 754 K8N-E Deluxe mobo w/bios 1009
Corsair TwinXMS2048-3200 (2x1gigs sticks)
ATI X850XT PE AGP video card

In the memory configuration in the BIOS try to find something like 'mem clock' or something like that. On my A8V Deluxe its default at auto, and if i hit enter it brings up a bunch of dividers to run your memory at a lower clock than the cpu. It'll help you get the max Ghz out of your CPU.

socket 754 systems do have issues when using 2 double sided DIMMS, especially 1GB sticks that don't do very tight timings.

Turn your CAS latency to 3 and timing to 2T. Then, put all the other timings as high as they'll go.

This may be the dumbest question, but can/do 2 ram modules, at least in some cases, require a higher vdimm setting than just 1?

Quote: Originally Posted by alex666
This may be the dumbest question, but can/do 2 ram modules, at least in some cases, require a higher vdimm setting than just 1?

I would say, yes. I have had to raise the Vdimm on several occasions when I added a second stick.

Coversely, I have had to lower Vdimm to its lowest to get some ram to work properly
[Kingston Hyperx 4300].

from what I have seen people stuck with a cpu with a 9 multi can only go about what you got. EDIT : opps you dont have a 9 multi on your 3000

you said Based on this limitation, wouldn't it be better to have my cpu running at 2.35ghz with 2gigs of ram running at 470mhz
Yes this example I think is on dfi street website.
I would stick it here and be happy. I would call it done. You had to be finished at some point. after all it is only a 3000 newcastle. Then again I prefer stabilty, ill play with a box for about a month and thats it anymore.

Also Im happy i didnt jump into the 64 bit board when the 3000 was all the rage. I dont like the timings off that 754 set up. I dont like the 3000 timings by it self either. My system is new and I went with 10 multi with a reasonable 250 fsb that gave me a perfect htt. with memory that could handle it. This build I studied for a long time and the results were a success.

My main complaint was xp pro , it cant handle a power user at default settings.
3 problems
needs a permanent page file
shut off hibernation
shut off system restore.
Every thing was kinda ok until I threw the power hungry game lock on at XP. It was not handleing my memory correctly. I made some tweaks to reg and shut off some unneeded services and now I have a stable and fast system.

Its obvious that some can overclock the 3000 with success just look at Stevens example and thats why everyone loved the msi neo 2 because it makes it possible. I know almost nothing about the 754 boards. But I suppose if you really want to continue tweaking the best info on the 754 boards and overclocking it I found is at the dfistreet website.

Quote: Originally Posted by Orgazmatron
from what I have seen people stuck with a cpu with a 9 multi can only go about what you got.

This cpu has a 10 multi;

http://www.newegg.com/Product/Produ...N82E16819103424

if this is the same as the one he has.

It should do 10x250 without a sweat. Memory is another thing..I don't have any advise for that. I don't run more than 512 in any box except my main 1gig.

lower your memory divider to like 166 and then raise the HTT.. that will reduce your memory bottleneck because your cpu FSB will be able to increase beyond what your memory is capable of

Quote: Originally Posted by mike047
I would say, yes. I have had to raise the Vdimm on several occasions when I added a second stick.

Coversely, I have had to lower Vdimm to its lowest to get some ram to work properly
[Kingston Hyperx 4300].
DOH !!! opps oh yeah that was the hot 3000 wasnt it Hmm he said he reduced the multi to 8? Hmmmm jeeze id use the 10

Tried changing only the divider down to 133 and still no go. Bumped up the FSB one notch to 236 and system would not boot. Why is it that I can remove one stick of ram and the thing will take off big time?

I have my ram timings set to auto and they are 3.3.3.8 at 1T. Any tighter than that and the PC won't boot. Any looser than that and it won't boot. Already have the ram voltage set to 2.7 per Corsair and the CPU volts to 1.575.

it might be a bum memory controller :\

At least one of those corsair twin xms 2 X 1 gig sets has a vdimm voltage rating of 2.75 (the first entry on the following page at newegg), and if that's your memory, then you might be undervolting it a bit.

http://www.newegg.com/Product/Produ...Submit=Property