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AMD® Athlon™ II Overclocking Thread

Ok

Try dropping your CPU multiplier as low as it can, IIRC itx 5x then set the FSB at 261 and all other voltages.

If it boots then you have a poor CPU, if it still doesnt boot your motherboard has a very low FSB wall.

Going to be trying to better my max overclock when I get back in a couple of hours. Along with an attempt at some 4-4.2Ghz winky waving wprime and fritz runs
 
Good luck with your runs mate.

Possibly right about the poor cpu, however these motherboards are apparently half decent, I was recommended it from a guy earlier in this thread :p

No did not like that either. 5x261 was fail on desktop.

Clutching at straws, I have removed one of the memory modules and will try using one in different slots.
 
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If its failing at that clock your board has an FSB wall as you chip cannot possibly be unstable at 1.3ghz. You may be able to get past this by getting a fan blowing onto your northbridge and power regulation circuitry.
 
Have you seen this board it has a nice little heatink over all that circuitry so it keeps it nice and cool. :)

dfi_790GX_M2RS_054474.jpg


Its early days but running one of the memory modules in a different slot is allowing me 255 fsb x 13 the fastests its been, no inital errors or warnings in prime blend, its looking up, only problem is 2gb of memory is slow :D
 
The first stick of memory went through fine at 255, removed that module put the other in alone and it brought error in prime after 5 minutes.

Will get the memtest program, is it windows based or through command prompt?
 
Hey frozennova, nice results from a sub £50 chip . . . I'm wondering though if the CPU-Clock is being limited by the Geil Value DDR3-1333? . . .

Have you tried switching the Memory-Multiplier down from [3:8] to [1:2] in an effort to remove the strain from the memory and help "isolate" the CPU overclock? . . . . I'm not sure if all AM3 boards have the [1:2] memory option though?

iTek: As suggested by frozennova, download Memtest86+ V4.00 here and make a bootable CD-ROM and test both sticks separately at their rated speeds, you can also test the sticks in different slots if you have time . . . . really like the look of your new board (as suggested by CAT-THE-FIFTH in post #73) . . . it appears to have all the overclocker friendly options like a decent PWM heatsink and 8-pin ATX +12v as well as a decent BIOS etc

How hot does the PWM heatsink get while the system is running a heavy load?
 
Frozennova - very good overclock buddy.

Big.Wayne - I would say that area in terms of temperature is mild at most, it feels like it could cope with a huge overclock just sadly its not going to get it from me.

I will test both sticks individually and see what comes up, strangle from my observations I can run at 255 with one stick of memory in (aint tried higher) but when I put a second one it just crashes, I initially thought it was a faulty module now, I just dont know what it is.

Only thing I need clearing up is, rated speed... i mean do i set it to ddr 800 which allows me to change the bus speed or do you set it to 1066 and wont let me change the bus speed (13x200)
 
iTek, that's a good point actually . . . I would say set the stick to DDR2-800 [1:2] in BIOS, drop processor multi to [x10] and drop both the CPU-NB/HT-Link multi to [x8] then change the HT ref. Clock from 200MHz to 266MHz . . .

2660/2128/2128/1064

That config will test the ram at it's stock speeds and also test the boards Ht ref. Clock . . . . good luck! :cool:
 
Ok - one test complete on one module - it passed.

Look at this image I took on my phone, is this normal.

MEMTEST what I am referring to is it saying 200 Mhz 400ddr (You can see top left shows I am actually at 3315 (13x255)

going to test the other piece on its own now in different slot.
 
Thats actually a problem I'm having wayne

When setting my memory timings and ram speed in bios when I save and exit the settings switch back to auto and the defualt for ram speed when i re-enter the bios. I've tried an update of the bios but to no avail
 
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Yup mine does that when I change to anything over then DDR 800 and have a modified fsb.

Now guys cast your eyes over this, something which I cant explain...

Module 1
Module 2

If you looked at the last one you would have seen in memtest it showed up as 200mhz/400ddr this one showed up as 400mhz/800ddr...

So when one stick is in the yellow ddr slot its shows up ddr200/400 and when the other module is in the other yellow ddr slot it shows ddr400/800

So i have two matching sticks yet memtest sees one as slower then the other...

what do you make of that.
 
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Big.Wayne - lol thanks for been honest.

thingemajib - think i'll be playing lucky dip with a 550/555 this week.

here is a memtest with both modules in together - FAIL
 
shouldn't that say (128 bits) for dual channel? (I can't remember?) does it say dual-channel is CPU-z? . . . . reset the system back to stock and test the memory with no overclock . . . . is it a faulty stick or is it a faulty slot?
 
check out the new sig Big.Wayne

Using a lower memory divider when I didnt think I would have to! The chip is good for the power its just is it the memory controller on the board or memory are holding back at 1:2 DDR800 ratio.

BTW here is the memory I am using.

Everest seems to recognise this memory as DDR400/800 which is strange it should 533/1066.

I only get the memtest error when running it at a 1:2 ratio.

I will start moving vcore voltages down and see if I can keep stability.

Thoughts are welcomed

AMD® Athlon™ II X4 620
f_ejntxf7m_f9f0249.png
 
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Hello iTek . . . some progress I see! :)

You mentioned the "memory controller on the board" . . . This was moved from the NorthBridge and placed inside the AMD CPU some years ago . . . It's now called an Integrated Memory Controller (or IMC for short) . . .

As your making an effort to get some screenies up can I ask you make them similar to the results in post #2 with a two CPU-z windows open side-by-side, this makes it easy for anyone to see your current config! . . . also if you are able run some Prime95 *blend* for as long as you can then make a screenie of that . . . . if you click on the results in post #2 you can copy the layout for your stability screenies!

 
Interesting, shows my knowledge is a little dated, my last overclocking experience was from Thoroughbred and Barton cores, things have changed. Well then it appears the memory is probably to blame here but by using a lower multiplier she's working great at the moment.

Ok have edited that one above, I will also carry out some blend tests however, these will be limited to about 8 hour runs, computer is my kids room.
 
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