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OC'ing an Athlon II X4 630 - 4x2.8ghz

post #1 of 61
Thread Starter 
Title says it all.

Using stock air cooling I'm idling at 43c on all 4 cores, I ran Prime95 and did the "heat" test for 20 minutes, all 4 cores completely maxed, temps stayed at 61c.

Is that too high to OC ?

It was a barebones system too, so I recognize the possibility that it wasn't set right, the idle temps seem too high I think, not sure.

I basically need an explanation of what to do, especially from anyone using stock cooling for these low end quads.

I saw someone in another thread OC'd each core of a 620 to 3.6 ghz, So figured it's time to OC since I have a 560 Ti arriving in the mail Thursday.

A few things have been bugging me as well, the fan intermittendly speeds up as if the proc needs more cooling but it apparently doesn't.

I also checked the voltage and it seems some parts are being over volted by very small amounts, and others are insufficiently powered by .010 . I'll take another look and write a detailed response.
Edited by Ascii Aficionado - 4/25/11 at 9:50pm
post #2 of 61
This is the system with the 620.

BIOS Settings:
CPU VID = 1.475v
CPU-NB VID = 1.25v
DRAM Voltage = 1.65v
HT Reference Clock = 277
CPU x13
CPU-NB x8
Lock HT link to 2000.
Lock PCIE to 100.
DRAM = x400 (1108MHZ)
DRAM Timings = 6-6-6-18

You can probably manually control your fan in hardware monitoring section of BIOS.

You may get better or worse results than I did, and with more or less voltage. See the pdf in my signature for step-by-step instructions on how to overclock any AM3 platform.
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post #3 of 61
Thread Starter 
Quote:
Originally Posted by damric;13274440 
This is the system with the 620.

BIOS Settings:
CPU VID = 1.475v
CPU-NB VID = 1.25v
DRAM Voltage = 1.65v
HT Reference Clock = 277
CPU x13
CPU-NB x8
Lock HT link to 2000.
Lock PCIE to 100.
DRAM = x400 (1108MHZ)
DRAM Timings = 6-6-6-18

You can probably manually control your fan in hardware monitoring section of BIOS.

You may get better or worse results than I did, and with more or less voltage. See the pdf in my signature for step-by-step instructions on how to overclock any AM3 platform.

Those settings applied to my bios downclocked me to 2.6ghz

Setting CPUx14 and CP-NBx9 put me back to 2.8
Edited by Ascii Aficionado - 4/25/11 at 11:00pm
post #4 of 61
Quote:
Originally Posted by Ascii Aficionado;13274691 
Those settings applied to my bios downclocked me to 2.6ghz

Setting CPUx14 and CP-NBx9 put me back to 2.8

lol yeah. That is the settings for my 620, so the maximum multi is only x13. You have a 640 so use the x14. Your HT ref should be lower, like 257 to get 3600mhz. You can probably use the 667 RAM divder as well. You just need to experiment, but do one thing at a time and start with maximum CPU frequency, then CPU-NB, then RAM Speed, then RAM Timing.
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post #5 of 61
Thread Starter 
I tried max multipliers in everything, and every combination imaginable, the frequency never went above 2.8ghz. So, I'm genuinely confused.

Put everything back to auto. Booted to make sure everything was as it was before I started to OC, and it was. Then I reset the heatsink, think the placement of thermal paste changed as now I max at 66c so I'm not running the pc anywhere near full load now until this arrives.

http://www.newegg.com/Product/Product.aspx?Item=N82E16835100007&cm_re=thermal_compound-_-35-100-007-_-Product
Edited by Ascii Aficionado - 4/26/11 at 10:32am
post #6 of 61
Thread Starter 
Well this was a very unexpected surprise. I read that the 620 using the Deneb architecture was a crippled Phenom II and you could unlock the L3 Cache. My 630 uses the Propus core that's supposed to physically not have it, but I set my bios to "Unlock CPU" and now I have a lvl 3 Cache of 6mb ?

I noticed it says exactly 6MB, but every other SS I see of people's CPU-Z it's usually about 100kb over and such, so perhaps it's a false reading, not sure.

I'm really confused by this, if it's physically not there on the Propus design then how is it appearing ?

http://www.guru3d.com/article/amd-athlon-ii-x4-620-review-test/1
Quote:
Going back to that Deneb design. The initial Athlon II X4 samples actually were Deneb based and as such some of the early samples were able to have their L3 caches unlocked. This is a thing of the past now as AMD switched over to the less expensive 'Propus' design for the Athlon II X4 620 and 630. Propus doesn't have any physical 6MB L3 cache at all, so your chances of activating it using the ACC will be really slim unless you run into a very early production batch.

A few overclockers have found recent success turning an Athon II X4 620 or 630 CPU into a fully-fledged Phenom II X4 just by activating ACC in the BIOS. Instead of a core being unlocked, the ACC is capable of activating the 6MB of L3 cache turned off on the chip. Here's the thing, if you have the older Deneb based processor... you might be in luck. Propus, as explained however, has this cache physically missing and as such it's just not possible to unlock it.

Edited by Ascii Aficionado - 4/26/11 at 11:46am
post #7 of 61
at least you should be using the phenom II stock cooling, since the one provided with your chip is ridiculously small. 61ºC is not that high, for a phenom, an athlon should works 55º max.
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post #8 of 61
Thread Starter 
Quote:
Originally Posted by otaku_ex;13280478 
at least you should be using the phenom II stock cooling, since the one provided with your chip is ridiculously small. 61ºC is not that high, for a phenom, an athlon should works 55º max.

I'm not using a Phenom II though... that's the thing. But if I somehow turned my Athlon II into a Phenom II by activating the L3 cache that shouldn't exist then I guess it will run hotter ? even if that's the case this didn't occur until 15 minutes ago when I accidentally discovered it. So I already see evidence that I need better thermal paste, or more in general since I think i messed up the coating when I reset the heatsink.

Also, I heavily edited my post above yours, please re-read it.
post #9 of 61
more than better thermal paste, you need better cooling solution.
BF6008DC-8C6D-4F5E-BC9EB400523127CE.jpg
Just compare the little rubbish you are using with the one that comes with phenoms x4
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post #10 of 61
Thread Starter 
Quote:
Originally Posted by otaku_ex;13280612 
more than better thermal paste, you need better cooling solution.
BF6008DC-8C6D-4F5E-BC9EB400523127CE.jpg
Just compare the little rubbish you are using with the one that comes with phenoms x4

I'm more than aware even before the increased temps from the heatsink reset the temps were too high.

Either AMD skimped on the Athlon II X4 series cooling or the Pheonom II X4 really does need that much better cooling. BUt apparently the only difference between ad Athlon II X4 and a Phenom II X4 is by default one has a L3 cache and the other doesn't. So that would logically conclude the Phenoms would also have higher clock speeds since they're new and a L3 cache, but that's a huge difference in heatsinks.

I almost want to say I have a mislabeled Phenom II X4 but I don't see that as possible as everything about the proc electronically registers as an Athlon II X4 with a Propus core.

I'm now regretting getting this barebones system, was a quick buy when my old Athlon II dual core had a pin break off.

And just for the sake of proof, http://valid.canardpc.com/show_oc.php?id=1789115
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