• We’re currently investigating an issue related to the forum theme and styling that is impacting page layout and visual formatting. The problem has been identified, and we are actively working on a resolution. There is no impact to user data or functionality, this is strictly a front-end display issue. We’ll post an update once the fix has been deployed. Thanks for your patience while we get this sorted.

Another 2.4C Problem, this one with Dual Channel...

M

Macleod

Junior Member
Ok, overall specs:
2.4c, 1gig 3200 Corsair, watercooled CPU & 9800 Pro via Danger Den. Albatron i865 MB. Can't remember how much wattage on my PS, but it's 400+, and an Antec True Power. I have 3 drives, 2 roms, and 3 120mm fans though.

Here's the deal, My temps are good w/ my watercooling, but I've never been able to overclock much in dual channel mode. I'll get random hard reboots at just about anything over stock. (Not sure just how pitiful it is, but I get reboots at 2.7, at which point I just didn't care anymore). In single channel mode, I can run up to 3.5 though, so long as my office isn't too hot.

I've had two of the same m/b Albatron PX 865 V2 w/ the same results (I RMA'd one for another reason). Incidentally, never buy Albatron, their service is exceedingly poor.

I've run through some standard memory tests and found no problems.

Thoughts? Thanks guys.


😕
 
I would take a good look at the memory, maybe try different modules. Also it would be a good idea to run memtest, maybe you have a bad module. Other things to look at are making sure your agp pci bus are locked (should be a setting in the bios) when overclocking and using the proper dividers. Most 2.4c's should do 2.7 or more easy
 
Hi are you using just two stick of ram for the 1 gig 2x 512 or 4x 256.
I have noticed I can't overclock as high if all the slots are filled. Using 2x512 allows full speed. I can't overclock too much overstock though so what I do is I underclock the memory to 320 mhz and then overclock the FSB to 250 mhz. That makes the ram at stock speed PC 3200 which is default, but the processor is overclocked to 3 ghz. I can even go higher to 3.1 at all times. That is on air cooling.
 
I'm a bit fuzzy on what settings I was at when I ran memtest last, but the system passed. I'll rerun and get back to you on that issue. I would try new memory if it wasn't prohibitively expensive to do so. I'll see if I can manufacture an excuse to get more... HTPC? 🙂

I have locked my PCI/AGP at stock speeds, disabled spread spectrum, played with voltages...

I do have just two sticks of 512.

My Ram is underclocked via dividers as you suggest.

Oh one other thing, enabling PAT (the 875 thing) REALLY iritates it in dual channel mode...

Thanks for the responses guys.

 
Here's one other thought... At the stock 2.4, my ram running at 3200 right? I know I did a memtest at that speed, and when I overclock, I have to slow it down as Guiness pointed out, so even if I haven't tested the RAM at the various overclock speeds, my RAM should already be tested past the speed I'm asking it to give right?

Are there any m/b settings that can affect this that anyone knows of? As I mentioned, I've locked my PCI/AGP bus speeds, but is there any other way that things could get hosed on me?

Thanks again...
 
You can lower the timings on the ram , sometimes that is the key. But with my motherboad I have noticd the memory controller is my limiting factor in overclocking. It will only go so fast no matter what settings I use. I have pc 4000 hyper x but no settings will enable my motherdoard to run it at that speed. The most my ram will go is 416 mhz or PC 3328
For you it might be your ram that limits it. Corsair I think their pc 3200 is designed to have fast timings but not overclock well. I think the Niorthbridge just doesn't like to send data to the ram any faster though.
 
My mobo supports these ram multipliers:
1.33
1.6
2
2.5
2.66

Ok guys, check me on this. My proc mult is 12, so at bus speed 200, I have 2.4ghz. Bus Mult of 2 = 400, which is stock for my Corsair.

At 3ghz, I have bus speed 250, and 1.6 will again yield 400.

I think my chip will reach 3.4 comfortably, which puts my bus at 2.83. This forces me to 1.33 mult, which is only running at 376mhz. So at my highest overclock, my ram should be running slower than it is at stock speeds, right?

I shouldn't need 3200 hundred unless my CPU could reach 3.6, (using 1.33 mult.)

If I lock PCI/AGP, what else is being overclocked when I crank up my CPU? The northbridge is what handles the PCI/AGP right, so it should be ok? Anything else?

Thanks again!
 
what is your ram voltage ??? most ram will handle 2.55 to 2.95 and ive had similar issues and its seem that the board just cant put out the voltage for all the dimms being full of RAM to be stable so i got a 500 watt + PSU and its all peachy now 🙂
 
Ok, here's where I'm at. All of the FSB's below use dividers that keep my ram running at 3200

@FSB: 200, 2.4ghz, I'm stable in single channel, dual channel, & dual channel w/ PAT

@FSB: 250, 3.0ghz, I'm stable in single channel, but hang getting into windows w/ dual channel (no PAT). However, MemTest seems to be running fine (I've only run it for an hour, but assume that if I hang immediately getting into Windows, that my problem must lie elsewhere.

@FSB: 300, 3.6ghz, I'm stable in single channel, but haven't tried it in dual channel

Again, my PCI/AGP clocks are locked. Does this really sound like a RAM issue? The only thing I can figure is that I'm overclocking something else by bumping the FSB that I don't know about.

Thanks again guys.
 
You must log in or register to reply here.

TRENDING THREADS

Back
Top