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What's holding me back?

post #1 of 15
Thread Starter 
I can get up to 2.8 (260x11) with Vcore @ 1.41...

I tried for 3.0 (273x11) even with MAX Vcore (1.50) and it fails orthos stress test in less than 30 seconds... Is my motherboard holding me back? Maybe my RAM? I haven't OC'd my ram at all (for some reason it seems complicated)

Any ideas?
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post #2 of 15
probably the processor itself, only a minority of AMD chips hit that big 3.0
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post #3 of 15
Quote:
Originally Posted by immanuelx2 View Post
I can get up to 2.8 (260x11) with Vcore @ 1.41...

I tried for 3.0 (273x11) even with MAX Vcore (1.50) and it fails orthos stress test in less than 30 seconds... Is my motherboard holding me back? Maybe my RAM? I haven't OC'd my ram at all (for some reason it seems complicated)

Any ideas?
Ah, a fellow 4400+'er. Well, you're much more fortunate than me--on my crappy mobo, I could only go to about 2.54GHz on 1.4v. Have you changed any RAM settings--have you lowered the RAM multiplier--could be you're clocking your RAM too high--which is likely. Set it lower--to 166MHz or 133MHz (assuming DDR400--couldn't tell if you have a 939 or AM2 system).

EDIT--noticed that you have PC3200, so put the RAM on a divider--unless you have exceptional overclocking RAM with a lot of vdimm going to it, you've probably hit the ceiling for your RAM stability at 260MHz FSB (which gives an equivalent DDR520--might be a bit too much for DDR400)
    
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post #4 of 15
Thread Starter 
Quote:
Originally Posted by guyladouche View Post
Ah, a fellow 4400+'er. Well, you're much more fortunate than me--on my crappy mobo, I could only go to about 2.54GHz on 1.4v. Have you changed any RAM settings--have you lowered the RAM multiplier--could be you're clocking your RAM too high--which is likely. Set it lower--to 166MHz or 133MHz (assuming DDR400--couldn't tell if you have a 939 or AM2 system).

EDIT--noticed that you have PC3200, so put the RAM on a divider--unless you have exceptional overclocking RAM with a lot of vdimm going to it, you've probably hit the ceiling for your RAM stability at 260MHz FSB (which gives an equivalent DDR520--might be a bit too much for DDR400)
Hey, yes I have socket 939 as well (Toledo core)... I have not touched any RAM settings, nor tried to overclock it. Should I still put my RAM on a divider? If so how do I go about doing that?
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post #5 of 15
In bios under cpu configuration then memory settings
Select memclock mode to manual then you should see 200 pop up next to a setting. Lower it down once and give that shot.
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post #6 of 15
Quote:
Originally Posted by immanuelx2 View Post
Hey, yes I have socket 939 as well (Toledo core)... I have not touched any RAM settings, nor tried to overclock it. Should I still put my RAM on a divider? If so how do I go about doing that?
Increasing the FSB speed will automatically overclock the RAM on AMD rigs--so you're overclocking the RAM without really realizing it.

Yes, it seems to me, the next step would be to put your RAM on a divider (and you might also have to increase the voltage to it, but be careful--as a rule of thumb, if you're not quite sure about things, then don't go past 2.8v on most DDR modules--but even that can be too high depending on the type you have).

Have you given some of the OC'ing guides a read? They have some great info that might help you get much higher than 2.6GHz. Here's a link to it:

http://www.overclock.net/amd-general...ing-guide.html

It might look long, but believe me, it gives a good systematic way of going about an OC for an AMD rig, and will also help you to learn what everything is (or understand it a bit better).

I'd say that right now, if I had to bet on it, it's your RAM that is limiting your OC. But don't forget about your HTT speed--for the most part, any HTT speed over about 1150MHz is likely to lead to instabilities (but not always). You should make use of CPU-Z for your OC'ing--it's a nice little program (free) that will give you info on your system--vcore, FSB, HTT link speed, Memory speed, timings, etc.

Also, I'd recommend using Coretemp to monitor your temps--it's also free.

So give that guide a read, and I'm sure a lot of your questions will be answered. And if they're not, or if you run into a wall, please let us know so we can help--I'm interested to see how high you can go 'cause we have the same processor, and I've been debating whether to buy a good S939 OC'ing mobo, but I'm not sure if the limit of these CPU's is high enough to convince me to do so. So good luck and let us know what results you get!
    
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post #7 of 15
Another thing that you might not learn when reading that OC'ing guide is that sometimes, with some AMD motherboards, having more than 3 modules of RAM causes the RAM to be automatically downclocked to 333MHz effective (166MHz) and put to a 2T timing. I don't know if your board does this. I don't understand exactly why some do and some don't--from what I understand, it has to do with the memory controller on the die not properly supporting 4 modules at full bandwidth simultaneously. But perhaps your board doesn't do that--I'm not sure.
    
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post #8 of 15
Thread Starter 
Yep... my RAM is set to 333MHz with a 2T timing... What to do?
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post #9 of 15
Quote:
Originally Posted by immanuelx2 View Post
Yep... my RAM is set to 333MHz with a 2T timing... What to do?
To be completely honest? I don't know. I'm not sure if you can manually set it to higher--I believe it's automatically clocked like that to ensure that the memory controller functions with the RAM properly. However, if the memory is automatically downclocked to 333MHz, then perhaps the RAM wasn't as high as I thought it was with your 260MHz FSB--but perhaps it was still too high for proper operation. Either way, I don't think there's anything you can do about the automatic downclocking and automatic setting to 2T. Most people just get a high enough overclock to bring the RAM back up to 400MHz effective and call it even. It usually works out okay that way.

I'd first find the max FSB for your CPU--by lowering both the RAM and HTT to their lowest and increasing the FSB until you can't boot--then increasing the vcore--this way you know if the OC you've hit at 2.6GHz is limited by the CPU, or by the RAM. That will give you an indication if you should put your memory on a divider. Generally you don't need to OC your HTT (not always the case) to get a good overall OC--just keep the HTT at or near 1000MHz and you're fine.

I think the biggest pain in the ass is once you've finally OC'd your CPU to a point you want is bringing your RAM back up, and loosening the timings--finding the best combo is what sucks 'cause there are so many combos of what might work, but you also want to get the lowest latencies at the same time.

So you might still need to put the RAM on a divider--can't say for certain until you go through the whole OC manipulations step by step to figure things out.
    
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post #10 of 15
try clocking it down to 266mhz (It is giving out dual channel speed - so stock is reading 400mhz and not 200)

Although for it to be auto set down to 333mhz suggests the mobo is automatically underclocking your RAM as you OC the FSB.

Do me a favour and check your memory speed in cpu_z so we can see if the memory is running too fast or not
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Nigel
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