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Upgrading to X2 4400+ - Page 3

post #21 of 49
Quote:
Originally Posted by fac View Post
I understand your point, and of course I'll try to push it as far as I can, but it has to be quite stable and relatively cool (say < 50° C), or it won't do any good for me. I use this machine for music production and data processing, and if it hangs it'll ufck up my work

I think 2.5-2.6 should be no problem. 2.7-2.8 would be great. But 3.0 with air cooling and my crappy power source? I'm not so sure.

Anyway, the X2 should be here by tomorrow. Meanwhile, I might try to squeeze 2.5 Ghz out of my 3200+. Last time I tried, the system wouldn't even boot.

Peace.
My friend has the 4800x2 s939 and the max he got on a good board was 2.8.

So i think 2.5-2.6 is fine, but nothing above 2.8
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post #22 of 49
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Originally Posted by fac View Post
Thanks for the comments.

My 4400+ did 2.3 Ghz with no problems. No need to lower the RAM divider or the HT multiplier. Of course, that's only a 100 Mhz gain. I tried 2.4 but Windows crashed, even if I lowered the RAM divider and HT mult, so I may need to bump up the vcore a bit. The default is 1.35 v, you guys say 1.45 is still safe? I'll try that tomorrow.
Well, I don't know about the quality of your RAM, but your HT should be fine if all you did was bump the FSB up to 209/210, keeping the CPU multi at 11, so you shouldn't really have to mess with your HT until you exceed 1100 (give or take, though I know that the common idea is to keep it as close to 1000 as you can, but 1100 is fine). I'd say that even your RAM should be fine with such a small increase in FSB, though it might not be good overclocking RAM--however, 10MHz higher on the RAM should be nothing--and taking it down to the next lowest setting will probably be worse than running everything at stock because I think you'll have to run the FSB up to 240MHz just to get the RAM back to stock speeds--there's no guarantee that you can do that with your mobo. Just out of curiosity--did you make a note of the stepping of the CPU before you installed it? If so, what stepping was it?

Also, before you put a divider on the ram, see if you are able to increase the voltage to the RAM/loosening timings to keep it as close to stock frequencies--you might not need to use a divider just yet.

Also, did you first systematically go through your overclocking?--things like make sure to find your mobo/CPU's max FSB? Like by lowering the HTT and RAM to their lowest multipliers (to take them out of the OC'ing equation) and slowly increase the FSB and vcore (keeping the highest CPU multiplier) until you get so high in FSB that adding vcore no longer helps and the computer no longer posts (this is your max mobo/cpu fsb)? And then you should find your max RAM speed--then use a divider (or dividers) to get to a point where you get as close to your CPU's max FSB setting and keep the RAM as close to stock speed (or faster if possible) as possible--you'll have to tweak the RAM's voltage and latencies to get the fastest settings that allow for the most stability. Then, take care of the HTT so it's around 1000 (admittedly, while I said that you can go over 1000, the HTT doesn't really affect performance until it drops to something like below 600 I think). Make sure to run a quick stability test each time you change a RAM setting--like orthos for a few minutes until you go to the next tighter setting. Once you think you've found a good combination of CPU/RAM/HTT settings, let orthos run for hours--if it fails, you likely have to change something like a ram latency or add more vcore or vdimm (or lower the fsb).

So, perhaps I've mentioned (don't remember if it was on this thread or a different one), unfortunately I have the worst OC'ing stepping, and my 4400+ runs fine with 1.3v at 2.3GHz. But the CPU will safely tolerate 1.45v--that shouldn't be harmful at all. But it shouldn't be necessary to get 2.4ghz stable--my mobo doesn't put out more than 1.4v vcore, and I can get to 2.5 stable with that. Are you sure you don't have FSB holes on your mobo, or it's some other setting (not vcore-related)? FSB holes have been known to happen with some mobos--don't know about yours though.

Well, good luck--I strongly recommend going with the systematic method of OC'ing, otherwise there are so many things you think you can change to possibly troubleshoot your OC, you're kinda just shooting in the dark--check out the OC'ing sticky in this forum, it's a great resource and full of info.
    
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post #23 of 49
Thread Starter 
My mobo is able to run the FSB at 240 Mhz with no problems, and my RAM is able to run at 438 Mhz. I know this because these were the settings I had with my previous CPU (Athlon 3200+ @ 2.4 Ghz). 250 Mhz and the system didn't post anymore.

BTW.- My mobo only supports a HT speed of 800 Mhz, so I have to set the multiplier to 3x or 4x

Unfortunately, I also have an CCBWE stepping CPU. Maybe I won't get as far as I initially thought. Not that it's a big problem - I'm quite happy with this setup.
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post #24 of 49
Quote:
Originally Posted by fac View Post
My mobo is able to run the FSB at 240 Mhz with no problems, and my RAM is able to run at 438 Mhz. I know this because these were the settings I had with my previous CPU (Athlon 3200+ @ 2.4 Ghz). 250 Mhz and the system didn't post anymore.

BTW.- My mobo only supports a HT speed of 800 Mhz, so I have to set the multiplier to 3x or 4x

Unfortunately, I also have an CCBWE stepping CPU. Maybe I won't get as far as I initially thought. Not that it's a big problem - I'm quite happy with this setup.
Ah, well, seems like you had the OC'ing worked out from before--didn't realize you previously used that mobo (I would have been a bit less long-winded--sorry for that...). Well, good to know that you can make it to 240 if you want. But I'm surprised that you're having trouble with only 2.3. Perhaps it is the vcore like you thought?

Even with the ccbwe stepping, they should make it to 2.54GHz--but I don't think many of them make it past that. Well, good luck--looks like you have plenty of vcore to work/tweak with. Hopefully you can prove the 2.54GHz wall wrong!
    
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post #25 of 49
Thread Starter 
I just increased the vcore to 1.4 and had no problems raising the FSB to 220 Mhz (CPU @ 2420 Mhz). I used a 11/12 DDR divider and a 3x HT mult just to be safe. Everything went fine, but when running at full load (two instances of Stress Prime 2004), CPU temp went up to 58° C after a few minutes. I dare not push it any further.

I'll leave it at 2.42 Ghz and tomorrow will try to set the DDR at 1:1 and the HT to 4x. My mobo allows an increase of HT link voltage by 0.1-0.3 V. Would that be safe? I don't have a system fan.
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post #26 of 49
Quote:
Originally Posted by fac View Post
I just increased the vcore to 1.4 and had no problems raising the FSB to 220 Mhz (CPU @ 2420 Mhz). I used a 11/12 DDR divider and a 3x HT mult just to be safe. Everything went fine, but when running at full load (two instances of Stress Prime 2004), CPU temp went up to 58° C after a few minutes. I dare not push it any further.

I'll leave it at 2.42 Ghz and tomorrow will try to set the DDR at 1:1 and the HT to 4x. My mobo allows an increase of HT link voltage by 0.1-0.3 V. Would that be safe? I don't have a system fan.
Hmm...58 is getting a bit up there--what's the idle temp like? Generally people say under 55C to keep things safe (but before my AS5 break-in period, my CPU would get a bit over 55C, now it's about 45-48C under full load, ambient is 72F). I think the thermal limit quoted by AMD for the 939 X2's is 65C. So TECHNICALLY if you're below that, you're okay, but I would keep it below 55C load. Also, you can run orthos--one instance of orthos will run on both cores--it's a good stress test for stability and temps. I don't know about increasing the chipset voltage--I think it would depend on the temps. But I don't know why it would be necessary--I don't think such a modest increase in FSB would require an increase in the htt voltage for stability. Is anything indicating that you should increase it?

If I recall, my CPU was very happy at 2.4, but when I pushed it to 2.54, it gave so many problems, and was quite unhappy But maybe with 1.45vcore, you can push it a bit more stably than I could with 1.4. Anyway, I'd say keep going if the temps are okay. What cooler are you using? I think the stock opteron 4 heat-pipe cooler that came with some of the 4400's was good, but you might want to consider getting an aftermarket cooler if you want to keep pushing your CPU more. And good luck with the OC. I really wish these would get a bit closer to 3GHz.
    
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post #27 of 49
Thread Starter 
Idle temps are a little below 40° C.

Before I increased the vcore; that is, at 2.3 Ghz with 1.35 vcore, temps were about 37° idle and 45° C at full load.
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post #28 of 49
Quote:
Originally Posted by fac View Post
I don't have a system fan.
Considering that (1) you live in a warm climate and (2) your OCing, do get plenty of air flow for that case!
You should also consider a better HSF too.
    
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post #29 of 49
Thread Starter 
Yeah, I'm thinking about staying at 2.3 Ghz until I can get better cooling.
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post #30 of 49
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BTW.- I have a ThermalTake Big Typhoon HSF, which I haven't installed yet. I decided to use the stock HSF first since the Big Typh requires removal of the HSF retention module, which in the case of my mobo, isn't hold with screws but with those plastic things which may break.
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