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***official amd 83x0 overclocking thread***

I seem to be stable at 4.6ghz 1.368v with 75% LLC
All I have done so far is change the multi to 23.

I'm happy with 4.6ghz so I might start messing with the FSB to see if I can get the voltage down a bit as if I lower it even just 1 step down at the moment, I get crashes.
 
That is a nice voltage, would be very cool and 4.6 is enough to get some speed. Getting to 4.8 seems a chunk of voltage to get stable (~ 1.45v dependant on your chip) but above that it seems you need custom cooling to get high clocks for 24/7 use.

I currently have it just under 4.8Ghz, high fsb getting 52c when benching on a H100 cooler.
 
I can't seem to get it stable with any higher fsb than 200, stock in other words. I'm currently at 22.5 x 200 @ 1.41v. I'm currently working on dropping the volts.

To overclock the fsb bus, do I need to apply voltage anywhere else and will I gain any real benefit by overclocking the fsb rather that just the multiplier?
 
ALXAndy said:
From my research I found that raising the FSB came at a much lower temperature than hitting the multi. So basically for my 4.9ghz bench stable (and I ran the torturous Asus Realbench 2.0) I could only achieve it with a balls high FSB and my 20.5 multi. If I raise my multi any more my CPU becomes unstable and temps will soon see the PC locking up.

I was given some advice the other day from a mate of mine who is a bit of an expert with overclocking and he basically told me (this was for my Xeon but I would imagine it's similar in practice to AMD) that I should lower my mutli to the lowest setting (this is a Xeon 1366) and then start cranking the bus at 5mhz intervals. Once I fail to post or get into Windows take the highest stable setting and then start working on the multiplier.
Click to expand...

This is the advice I have been following.

Does seem to give better results on benchmarks, though I havent been through games myself to see if it gives any real world performance benefits though.

So basically, reset to stock, set multi to lowest setting and keep increasing fsb until it no longer boots to windows. At this point, go 5Mhz back on the fsb, then start cranking up multi to give desired speeds, then add voltage for the stability.

NB: ram speed will also change along with changing the fsb, so may need some stability tweaks
 
hey guys im back at last! been working away forever finally back at base. (some may have seen my steam active my son is the culprit there :) lol

hi to all the new faces


so been playing with my clock speeds again and managed to up my 4.9ghz to the magic 5ghz, so far so good stable as im writing this currently running more test for longer periods to see if it fails, have gamed with it a little and touch wood she is holding up.

ran cinebench and broke the 800 mark 812 to be exact see below

GNInBUZ.jpg
[/IMG]

also here are voltages (i managed to get 1.46v i was surprised but at current stable on that i was mega surprised by this, but hey it works, and every clock i have posted has had low voltage compared to most on here must have top chip ;) and also temps, house temp during tests was 20c ( this is idle temps in pic) will post max temps after more tests gaming ect.

Kr9yBFG.png
[/IMG]

I see the thread is still going strong and helping people along never thought it would grow this big!

back now for a while so will be around a lot to help out

peace dudes :D
 
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farmerboy-86 said:
hey guys im back at last! been working away forever finally back at base. (some may have seen my steam active my son is the culprit there :) lol

hi to all the new faces


so been playing with my clock speeds again and managed to up my 4.9ghz to the magic 5ghz, so far so good stable as im writing this currently running more test for longer periods to see if it fails, have gamed with it a little and touch wood she is holding up.

ran cinebench and broke the 800 mark 812 to be exact see below

GNInBUZ.jpg
[/IMG]

also here are voltages (i managed to get 1.46v i was surprised but at current stable on that i was mega surprised by this, but hey it works, and every clock i have posted has had low voltage compared to most on here must have top chip ;) and also temps, house temp during tests was 20c ( this is idle temps in pic) will post max temps after more tests gaming ect.

Kr9yBFG.png
[/IMG]

I see the thread is still going strong and helping people along never thought it would grow this big!

back now for a while so will be around a lot to help out

peace dudes :D
Click to expand...

Wb famerboy! Long time no see.
 
Hi farmer boy. Those cine bench results are impressive almost on par with a bumped up 4770k.

In speed fan how do you rename all the different temps and fan speeds to which components they are?

Cheers, Damien
 
Damo667 said:
Hi farmer boy. Those cine bench results are impressive almost on par with a bumped up 4770k.

In speed fan how do you rename all the different temps and fan speeds to which components they are?

Cheers, Damien
Click to expand...

hey Damien and welcome to the nut house ;)

I'm not 100% have with this clock atm needs more work when I up my memory from 1333mhz it plays up my ram is pants ordered new ram today avexir green 2133mhz current ram patriot it's pants lol. Should be better once that's in I aim to smash that i7 score : only 10 more points ram may help had to up voltage by 1 more increment but still very low for 8350 chip

On the top menus go to temps and highlight say temp 1 for example and press f2 and you can change there heading you have to determine which temp relates to which components and the same for fan speeds.
which rpm is for which fan so disconnect one then it will show 0 rpm that way you can make sure they match I.e side fan top fan ect.

I didn't have to as I know my pump speed and all my fan speeds

and
 
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Nice to meet you :D

Been having a fiddle tonight - trying to get 5Ghz stable. Currently at 1.48v but doesn't want to pass realbench :(

Annoyingly, my cinebench score goes up from 777 to 802 just by going from 4.9 to 5Ghz, while only going from 768 to 777 from 4.8 to 4.9, grr
 
cwgk91 said:
Been having a fiddle tonight..


Annoyingly, my cinebench score goes up from 777 to 802 just by going from 4.9 to 5Ghz, while only going from 768 to 777 from 4.8 to 4.9, grr
Click to expand...

Ooh err!

Yeah I think the cinebench scoring needs a minor tweak. Not really a clear indicator of performance gains.

cwgk91 said:
Double post, sorry
Click to expand...

You WILL be sorry, no OT else ban! :D
 
cwgk91 said:
Nice to meet you :D

Been having a fiddle tonight - trying to get 5Ghz stable. Currently at 1.48v but doesn't want to pass realbench :(

Annoyingly, my cinebench score goes up from 777 to 802 just by going from 4.9 to 5Ghz, while only going from 768 to 777 from 4.8 to 4.9, grr
Click to expand...

cinebench is ok but i can run one test after another and get different results each time :s lol

lowering multi and uping fsb worked for me to get cpu stable, that and i believe my chip is a rare egg i seem to be able to get high clocks at low voltages :p a 9 series slipped there net here i think hehehe
 
farmerboy-86 said:
cinebench is ok but i can run one test after another and get different results each time :s lol

lowering multi and uping fsb worked for me to get cpu stable, that and i believe my chip is a rare egg i seem to be able to get high clocks at low voltages :p a 9 series slipped there net here i think hehehe
Click to expand...

Try running Cinebench at "abovenormal" or "high* priority, it can be quite sensitive to background applications.
 
im somewhat surprised to see this thread still going but its good to see it is! :D

iv more or less completely given up on pc gaming / gaming in general, the pc is rarely even turned on these days so i might pick up where i left and aim for the magic 5ghz again \o/ if it breaks, so be it.. i wont miss it :)
 
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