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Old Jan 17, 2009, 07:05 AM   #226
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hmmm, couldnt do anything in windows for more than 5 minutes without a bsod at 200 X 18, but 225X16 seems somewhat stable.. strange.
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Old Jan 17, 2009, 08:39 AM   #227
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i know in the past AMD CPUs liked voltage being pushed, perhaps the Phenom 2 is like that, TBH im usually more worried about a Motherboard crapping out than a CPu under overclocked conditions.
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I am not pushing more than the 3.9Ghz I got from a few tweaks at first, now I am trying stable at lower voltage. So far to remain stable I need to give it 1.48 or better (BIOS Setting) to remain stable at 3.8 but at that same setting I have gotten a couple dxgkrnl.sys errors, and one IRQ not less or equal when I start folding with SMP and on the GPU, possibly the voltage ripple inside the board caused byt the dynamic load change causes vcore fluctuations in this board. So I am back up to 1.5 in the BIOS and it is rock solid, and temps are 46C fully loaded, and I believe that is reading high, as the GPU is running in the loop AFTER the CPU and it only runs high 30's.



I told myself when I ordered that anythign over 3.6 24/7 stable was freakign awsome, and I have 3.8 and have booted now once to 4.2Ghz, but it was unstable and I had to push 1.55 (BIOS again) vcore to get it booted, but windows woudn't load.
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Old Jan 17, 2009, 03:59 PM   #228
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the only AMD chip i have run into not like voltage is kuma....bloody thing became less stable as i cranked the volts

deneb loves them the new design process should allow you to push 1.55v+ 24/7 easily
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Old Jan 17, 2009, 09:00 PM   #229
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Well, im 5 hour prime stable, but i crash in games after about 5 minutes.. anyone know what might cause this?

Memory? thats kind of what i was thinking, maybe this beta bios is messing with memory timings.
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Old Jan 17, 2009, 09:20 PM   #230
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The chip seems to be correcting issues as they come, and the higher the speed if the stability is off, the lower your actual performance. For example, at 3.9Ghz it took on average of 10 runs almost half a second more to run SuperPi on core 0 than any other core. When I clocked down with the same voltage all the cores are within a few miliseconds of each other, and only about 2 tenths slower on the run.



I was thinking about pushing for 4Ghz again, trying 1.575 vcore in the BIOS and see what happens with just a multi OC. So far the only performance difference between the multiplier overclocking and the FSB is the memory speed increase, I only mention this as some have thought using the multi to overclock leads to different results.
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Old Jan 17, 2009, 09:47 PM   #231
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Quote:
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The chip seems to be correcting issues as they come, and the higher the speed if the stability is off, the lower your actual performance. For example, at 3.9Ghz it took on average of 10 runs almost half a second more to run SuperPi on core 0 than any other core. When I clocked down with the same voltage all the cores are within a few miliseconds of each other, and only about 2 tenths slower on the run.



I was thinking about pushing for 4Ghz again, trying 1.575 vcore in the BIOS and see what happens with just a multi OC. So far the only performance difference between the multiplier overclocking and the FSB is the memory speed increase, I only mention this as some have thought using the multi to overclock leads to different results.
since the multi is the actuall internal clock of the CPU

http://en.wikipedia.org/wiki/Overclocking

http://en.wikipedia.org/wiki/CPU_multiplier

http://en.wikipedia.org/wiki/Front_side_bus

http://en.wikipedia.org/wiki/HyperTransport

http://en.wikipedia.org/wiki/Intel_Q...h_Interconnect
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Old Jan 19, 2009, 10:25 PM   #232
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Definitely joining.
Planning to get PII 945 or 950 depending on price.
Also I hope 800 series chipset is out by the time either of these chips are on the shelves. Want to see what else good stuff AMD has to give me.
And ONLY for future-proof, I'll be getting a 6GB/s SATA motherboard as long as they're not crazy over the top in terms of prices.
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Old Jan 20, 2009, 09:04 AM   #233
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Originally Posted by Psychoholic View Post
Well, im 5 hour prime stable, but i crash in games after about 5 minutes.. anyone know what might cause this?

Memory? thats kind of what i was thinking, maybe this beta bios is messing with memory timings.
have u tried using occt?
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Old Jan 20, 2009, 07:08 PM   #234
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Got a 940 BE arriving tomorrow hopefully. Will be running it on a gigabyte GA-MA790GP-DS4H.
Has anybody got any experience of this combo yet? Touch wood my 4gb Reaper 1066 Ram will be arriving as well
Any hints and tips would be appreciated
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Old Jan 20, 2009, 07:13 PM   #235
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I just bought a Phenom II 940
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Old Jan 20, 2009, 07:27 PM   #236
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i wanna join =] ive got a phenom 940, and i just bought an asus m3a78-t 790gx for it.



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Old Jan 20, 2009, 07:35 PM   #237
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Quote:
Originally Posted by eidairaman1 View Post
i know in the past AMD CPUs liked voltage being pushed, perhaps the Phenom 2 is like that, TBH im usually more worried about a Motherboard crapping out than a CPu under overclocked conditions.
+1 on mobo failure. When people use higher voltages they assume CPU failure when mobo failure is more common specially with budget board with no mosfet and bad chipset cooling.
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Old Jan 20, 2009, 08:09 PM   #238
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i wanna join =] ive got a phenom 940, and i just bought an asus m3a78-t 790gx for it.



Good board. I have the same one. Almost exactly the same as the 79-T, except that it's 4+1 phase.
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Old Jan 20, 2009, 11:55 PM   #239
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Mine is hitting 3700mhz 24/7 stable, was hoping for a little more..
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Old Jan 21, 2009, 12:12 AM   #240
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I have a PII 940 up to 3.83Ghz on air and I run it at 3.755Ghz for daily use on an ASUS M3A32-MVP Wifi Deluxe. It runs very cool at 35C @3.8Ghz..... I love this chip so much I would marry it but then the marriage would be annuled because there would be no way for me to consumate the marriage as I am the man in the relationship.
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Old Jan 21, 2009, 12:18 AM   #241
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I have a PII 940 up to 3.83Ghz on air and I run it at 3.755Ghz for daily use on an ASUS M3A32-MVP Wifi Deluxe. It runs very cool at 35C @3.8Ghz..... I love this chip so much I would marry it but then the marriage would be annuled because there would be no way for me to consumate the marriage as I am the man in the relationship.
Not sure how to take this. LOL I'll be posting some benches later, on my new 940BE. Chip is clocking 3.9 on 1.53v (real), but this Asus board has terrible vdroop.
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Old Jan 21, 2009, 12:19 AM   #242
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I have no idea if my board has the droop or not because of DFI's stupid voltage settings. I mean, what the hell is +300mV? I couldn't even get how to convert it on my old DFI P35
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Old Jan 21, 2009, 12:23 AM   #243
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I have no idea if my board has the droop or not because of DFI's stupid voltage settings. I mean, what the hell is +300mV? I couldn't even get how to convert it on my old DFI P35
LOL. +300mV=+.3v
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Old Jan 21, 2009, 12:25 AM   #244
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Old Jan 21, 2009, 12:26 AM   #245
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LOL. +300mV=+.3v
Oh it's millivolts? So if my stock vcore is 1.040v, +300mV is 1.34v? I will test the droop when I get my 940.. I have it set to +450mV in my bios right now for 2.9ghz on my 9750. That's 1.49.. CPU-Z shows 1.47, I guess that's good right?
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Old Jan 21, 2009, 12:30 AM   #246
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Oh it's millivolts? So if my stock vcore is 1.040v, +300mV is 1.34v? I will test the droop when I get my 940.. I have it set to +450mV in my bios right now for 2.9ghz on my 9750. That's 1.49.. CPU-Z shows 1.47, I guess that's good right?
Exactly, and yes it's pretty good. Use smart guardian at full load. That's when you'll see your real vdroop.
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Old Jan 21, 2009, 12:31 AM   #247
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I use AMD OverDrive
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Old Jan 21, 2009, 12:34 AM   #248
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I use AMD OverDrive
AOD is NOT accurate with real voltages. It often only reports what you've actually set it to.
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Old Jan 21, 2009, 12:34 AM   #249
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Oh lol I will install smart guardian when I get my 940 then.
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Old Jan 21, 2009, 01:20 AM   #250
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Some benchies........ these settings were benchmark and gaming stable, just not OCCT stable.





Even benched at 3.714.....................





Not too bad, the latest beta bios from DFI allows to stay 3.6 stable so far. These were from the older bios. Will see how far I can do stably with the new bios. Stay tuned.
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