HyperX PC3000 settings? UPDATE - moved a jumper & now things are better!

[Wiz]

I got my 2 pieces of 256 meg HyperX PC3000 and 1700+ b from eXcaliberPC.com today.

I've got it in my A7N8X Deluxe in slots 1 & 3.

So what timings should I be able to reach with this supposedly "370 mhz ddr"?

When I run it above 11x175 I get some stability issues, at 6-2-2-2T timings.
Is this normal?
I get spontaneous reboots when trying to run at 185fsb, no matter what the multiplier (tried 10x - 12x) even at timings of 7-3-3-3T.

Is there some secret I don't know about that will help me get stability with higher fsb & fast timings?

 

[rommelrommel]

I just got a stick for a buddy, and it did 4-4-4-2T @ 420 DDR (w/2.8V tho)

 

[Wiz]

I just tried 4-4-4-2T @ 185fsb & got a reboot. I'm still at 11x multiplier.
Right now it is at 6-6-6-2T and seems to be running, but for how long? Still, this is not working as advertised by eXcaliberPC.
I could lower the multipler as that's not really much of an issue but I don't think I can go lower than 9.5x

I have it at 2.8v now as it wouldn't run past 166 down at 2.6v



EDIT:

I got a reboot right after posting that above.

Now running a low multiplier - 7.5x @ 185fsb @ 6-6-6-2T just to see if it lasts more than 5 minutes.

 

[Spicedaddy]

I'm not very up to date with AMD overclocking, but are you sure your CPU can do those speeds? Tried upping the voltage?

 

[Cat13]

I'm running 2x 512 of HyperX pc3000 at 6-3-3-2. cpu is a 2100+ @ 2230 using 12 x 185. Everything is stable.

 

[Wiz]

Well I'm at 11x 180fsb with 6-2-2-2T now, seems ok so far.

It's a 1700+ Tbred b 0307 cpu - it can handle it.

Any ideas or thoughts about whether it's better to put the ram sticks in slots 1&2, 1&3 or 2&3 on this mobo?
They say to enable dual channel you put them in 1&3 or 2&3 but there was some discussion about enabling dual channel adding latency.
What's the current thinking along these lines?

 

[Shimmishim]

that is very strange that your hyperx can't do the 185 mhz mark (default for 3000)....

why don't you try one stick ... and see if that works...

maybe you have one bad stick and one good stick...

also try memtest86

after you start it do:
c-2-3-1-2-0

 

[Wiz]

Shimmishim, thanks! I'll try that.

I did try one at a time and got pretty much the same results.

It boots at 185 if I have the timings really slow like 6-6-6-3T but then I get reboots in WIndows under load.

I'll try memtest86 and see what happens.

 

[Shimmishim]

that's WAY to slow for the hyperx

i have one stick of the 512 pc3000 and it can do 190 @ 2-2-2-6

 

[Wiz]

memtest86 produces nothing but:

@X:1000
AX:0212
BX:3E00
CX:0101
DX:0000.

repeating over and over - I don't get any control and can't give it any commands.

This happens both with the overclocked settings and with all settings at stock speeds.

 

[syberscott]

As you can see from my sig I have been very pleased with my HyperX3000. I have low timings and that's at 2.77 vdimm. I think it might be your motherboard. Have you tried running the ram async at a higher speed than your FSB? I don't reccommend running it like that all the time but it would be a good test to see if it's the ram or not.

 

[XBoxLPU]

Running :

2X256 mb HyperX 3000
2.77 voltage
185 fsb
6-2-2-cas2

 

[Wiz]

Ok, someone else suggested that I need to put some cooling on my northbridge & southbridge - I'm gona look into this.

 

[Assimilator1]

Let us know the results ,then maybe I can go higher than 178MHz

 

[Necrolezbeast]

I have a 512mb stick of the HyperX pc3000 and I'm running it at 187 5-2-2-2....I think that your cpu may not be able to handle it, just lay off and lower the multi to get some tests in.

 

[Wiz]

So what do you recommend? I tried going down below 10X mult - even went down to 7.5X & tried each stick one at a time.

Last night it went bad & I had to boot ionto the recovery console. (Could not find c:\windows\system32\system)
Fortunately running chkdsk /p found & fixed the problem.

Now I'm running prime95 at 11x175 and it's not complaining about anything. It just passed Test 1000.
I guess I can try going up 1 mhz at a time and see what happens.

Still need to put some cooling on those northbridge & southbridge chips.

 

[alchemize]

TheWiz,

I have the *exact same* configuration you do. I found I was never able to operate stable above about 180FSB, regardless of timings or mulitplier used. I think this is a A78NX Deluxe issue, not the RAM. I've read some stuff on the AMDMB forum that supports this theory...I think voltage mods are the only way to get past it.

BTW I'm running it at 177Mhz x 12.5 right now with 2-2-2-6 timings stable at 1.8V. If I go 1 Mhz higher, Prime95 errors. At this I can run Prime95 9 hours.

 

[Wiz]

Thanks alchemize, right now I'm at 10x178 and running prime95 with no errors.
I tried 180 but started geting "double mouse pointers" so I backed off.

Have you tried any cooling on your north & south?

 

[Wiz]

Ok, I just ordered a

PCToys ICECHIP Copper Chipset Cooling Kit Model CCB-A1C Retail Solid Copper VGA and Chipset cooler from Newegg.
Seen Here

When it arrives I'll connect it all up and see if it makes any difference at all

I'm hoping that copper fan cooler will mount in place of the big aluminum heat sink that is now sitting on my northbridge, and since there is nothing at all on the southbridge this has to help!

 

[ShowdOWN]

i must have some good sticks because im running 2x256 at 2-2-2-4 185fsb dual channel on 8rda+. memtest doesnt give me any errors and prime95 and 3dmark both looped for hrs.

 

[Wiz]

ShowdOWN, must be nice - I guess sometimes you just plug the stuff in and it works eh?
Do you have any cooling on your north/southbridges?

 

[Wiz]

I just read (courtesy of something found at AMDMB forums) that some have found they can more easily overclock on the A7N8X by moving the cpu/fsb jumper from 133/166 to 100.

I just did this, my bios still allows me to set any speeds I want so I set it at the old 11 x 175 and all was good.

Now I have it up to 11 x 180 and have been running Prime95 for a while without any errors.

It always gave me errors at 180 before moving the jumper

I'll Prime95 it a while more and make sure it's stable, then I might just bump up a little more...

 

[alchemize]

Wiz,

That sounds more like the goodies I think I set the jumper to 100 also...I'll have to double check as maybe I've got more room in mine I would advise you to peak out before you add the SB cooling, then see what it does. I was able to run 11 x 180 as well...I think I even got to 11 x 183 or so, but I didn't get the nice fat 2+ Ghz untill I started using the 12.5 mulitplier.

PS I have no additional cooling on my NB/SB.

 

[Wiz]

Ok, it was ..... --- ***Almost***---... stable at 11 x 180 6-2-2-2T
It rebooted after about 15 minutes of Prime95.

I took it down to 11 x 179 and it will run Prime95 forever.

Now I have something to compare it to for after I install the chipset cooling.

 

[chizow]

Originally posted by: Wiz
I just read (courtesy of something found at AMDMB forums) that some have found they can more easily overclock on the A7N8X by moving the cpu/fsb jumper from 133/166 to 100.

I just did this, my bios still allows me to set any speeds I want so I set it at the old 11 x 175 and all was good.

Now I have it up to 11 x 180 and have been running Prime95 for a while without any errors.

It always gave me errors at 180 before moving the jumper

I'll Prime95 it a while more and make sure it's stable, then I might just bump up a little more...

I actually removed the jumper completely with good results. I think I posted this obscure tweak in the main A7N8X thread as well. One strange by-product is that the same settings FSB and multi settings result in slightly different resulting clockspeeds and multipliers higher than 13 are no longer accessible.

Chiz