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Problems with overclocking FX-8120 via multiplier - Page 2

post #11 of 15
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Quote:
Originally Posted by dstoler View Post
it seems as we are getting nowhere. you say that it is 100% stable when overclocking the cpu/nb freq alone and not the multiplier? how high can u get it stable with this method? you never answered about your bios revision. Do you have the latest one? Other than that I dont have any more answers I hope it all works out for ya!
My second to last post has it at the end, 0810. I got it to 4ghz stable with NB. Haven't taken the voltage past 1.325 for that though

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post #12 of 15
I can report similar problem with my system. I got FX-8120 and M5A97 PRO. The problem is I can hit 4000MHz with 250x16 but can't with 200x20. When I'm trying ti set CPU multiplier to x20 system even wont start, it shuts down right after start and then report overclocking failure. This is very odd because when I'm raising HTT to 250MHz I'm overclocking my memory as well (1600->1666) and this is even higher performance in the end. I wounder only one thing. Is this a problem of CPU or a MoBo? In theory it's a MoBo's BIOS problem, but I'm not sure about that because I don't know how CPU frequency forming in nowadays CPUs. Any ideas or similar report will help as I can't find anything on Google about this odd situation.

P.S. Sorry for my English.
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post #13 of 15
Hi Loke,

I'm from Malaysia and I have encountered a situation similar to yours. My setup is an FX-4100 CPU with an M5A97 motherboard.

In brief:

Scenario 1
19 multi x 200 htt (3.8Ghz) @ even up to 1.6Vcore, DRAM set to 1333Mhz, everything else stock/auto except all the green power saving stuff off = stable in OCCT but random crashes in games.

Scenario 2
16 multi x 250 htt (4.0Ghz) @ stock 1.4Vcore, mem dividers set to 1333Mhz 1.6VDIMM, everything else stock/auto except all the green power saving stuff off = rock solid stable for around a week already.

I am using 4x4GB Corsair Vengeance DDR1600 memory and I am shocked that they are stable at the resulting auto timings 8-8-8-24. Usually populating all 4 slots require relaxed timings.

The only thing that I note different is that by locking RAM dividers at close to 1333Mhz it changed my resulting HTT frequency.

Originally in Scenario 1, my HTT frequency was at stock 2600Mhz, in Scenario 2, because of using mem dividers, my HTT backed down to 2000Mhz and it was stable.

Not sure if anybody else can correlate this information.
post #14 of 15
hello,
best way i found is to combo your overclocking, try 17x or 17.5 x multiplier and then hit it with a 250 fsb ,you should hit the 4400 with that ,as for getting it stable,no idea,i'am using air and it overheats at that speed.
    
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post #15 of 15
hello MrPerforations,
I did a 12 hour burn-in at 16x250 with OCCT. Seems like the burn-in period did something.
I am now at 21x200 @ 1.5Vcore. It's high, but what to do, it seems stable in OCCT - Large Data Set test for 2 hours... temps are alright, nothing above 57C.

Either this CPU is a dud and needs burn-in periods to help OC, or my M5A97 (non-EVO) mobo is too weak/cheap biggrin.gif.
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