Overclocking FX-6200 on water

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mcopinger

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Hey Guys,

I'm currently overclocking my FX-6200 on an Asus Sabertooth 990FX. I have corsair vengence memory running at 1866Mhz and a Sapphire 6870 graphics card all being powered by a Antec 750w bronze rated PSU.

currently my overclock is 4.6Ghz @ 45C on stock voltage with a 23x multiplier. I have all the power options in my bios turned to extreme as far as power is concered and all the other features (such as cool n' quiet) disabled. When I bump up to 23.5x Multiplier I BSOD and increasing the CPU bus speeds usually results in my 3 or 4th core failing within 20 minutes of a prime95 test.

Unrealistically I'd like to see 4.9-5Ghz and realistically I'd like to push for an extra 200Mhz stable (4.8Ghz) for a full 1Ghz OC. let me know if you guys have any thoughts, tips, hints or if these chips don't respond well to CPU bus speed increases and this is all I'll get.

honestly, I'm not sure if this speed was granted by my water cooling or not but I'd like to push the limits of that too, I believe these chips top out at about 63C but I'm not 100% on that... Prime95 is programmed to shut down at 60C to be on the safe side but hasn't gotten above 52C
 
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noob2222

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is that 23.5 multiplier without upping the voltage? you will eventually hit a point where you have to start feeding it voltage on a very sharp curve.

For example, my 8120 runs fine at 4.7 ghz @ 1.344V. upping only 300 mhz to 5.0 ghz requires 1.475V ... and adds 10c.

To me thats totally not worth it other than bragging that I can run at 5.0 ghz. Even going to 4.8 ghz requires a jump to almost 1.4V, so my chip 4.7 ghz is the breaking point for efficiency.
 
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mcopinger

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that was without bumping up the voltage but I just checked Prime95 and 2 workers stopped working at about the 3 hour point so I dropped down to 23x and bumped up the voltage to 1.452 (I think, CPU-Z keeps jumping between 1.332 - 1.432volts) if it runs stable like this until tomorrow morning I'll bump back up to 23.5x. have you noticed that increasing the CPU buss speeds puts you in BOSD with a high multi? b/c I go up 5-10 with a "stable" multi (testing for about an hour) and usually blue screen right away or once I open Prime95
 
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noob2222

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A lot of the FSB speed will increase the rest of your cpu and memory. Nb, HT, Memory are all affected by FSB. you have to play a balancing act. NB MUST REMAIN BELOW 2600 MHZ at all costs, ht below 3400.

Current oc, 267 fsb, 17.5 multiplier, 4.688 ghz cpu, 2403 NB, 2670 HT, 2133 memory.

With your CPU-Z voltage jumping around, you need to turn your load line control to ultra.

And as Moto said, ram us usually tested very well for what its rated for, overclocking just a little may unstabilize it, but going slower than its rated for should run without any issues at all. good for testing.
 
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mcopinger

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I do have the load line control on ultra, it's still jumping around between 1.352 and 1.452, I've also turned the Ram down to 1333Mhz for now - it's rated for 1866Mhz. running Prime95 again and watching for workers to stop. hopefully this memory adjustment is my answer.
 
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mcopinger

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it's cool - I keep having a problem with core #3 failing, it's not crashing the computer. it's just stopping during the Prime95 test - everyone else is running strong... so far. going to reboot at 4.5Ghz though
 
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noob2222

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wich bios are you running? Mine doesn't change voltage at all, only thing disabled is C1E and Turbo. Idle at 0.97V and load at 1.344. something doesn't seem right if its still jumping voltage.

This is on 901 bios.
 
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mcopinger

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alright, I've seen what your talking about. I'll give it a try tomorrow after work/school so I can give Prime95 a full +24 hours to test system stability before I start tweaking the CPU bus speed to push past 4.5Ghz
 
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HugoStiglitz

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nope there should be software on your motherboard CD called ASUS Update

you can load the .ROM file into that softwaer.

MAKE SURE YOU RESET TO FACTORY SPEEDS (NO OVERCLOCKING) to do the upgrade.
You do not want ANY instability while playing with bios updates.
 
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mcopinger

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checked the computer and Prime95 is still running stable at 4.5Ghz across all 6 cores, tonight I'll save that profile and start upping the CPU bus speed to see what else I can get out of the system...
 
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mcopinger

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because I can is really the only answer. also I'm one of those people that bought a liquid cooling loop not out of necessity but out of desire and now I'm trying to put it to good use to I'm really looking to push that thermal limit (or at least come close) and then have to back off. which I'd be perfectly happy with.

though 4.5 isn't anything to laugh at I think haha..
 
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mcopinger

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alright cross your fingers that I'm stable at this particular set up. 22.5x multipler, 204 CPU Buss speed at 1.4volts (about) WITH the Memory running at 1900Mhz all at 49C!

I'll leave it here unless there is something to tweak that I don't know about that won't require I up the voltage. this is as high as I want to go!

thanks for the help everyone =D
 
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