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post #53781 of 67911
Quote:
Originally Posted by Chopper1591 View Post

Do you guys think one can test FSB stability by just upping it while keeping everything else lowish? Like stress test your cpu on a 4.0 clock with default cpu-nb and ht and try the highest fsb to keep close to those numbers?

I'm not sure, I think someone told me getting the FSB to 250ish mhz is best for overall speed but I can't remember who, I couldn't get my motherboard to post over 240mhz or so.
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post #53782 of 67911
Quote:
Originally Posted by Chopper1591 View Post

Do you guys think one can test FSB stability by just upping it while keeping everything else lowish? Like stress test your cpu on a 4.0 clock with default cpu-nb and ht and try the highest fsb to keep close to those numbers?
that won't work because once you run it at the higher multiplier the requirements change for voltages and such...and running 300 fsb with the lower clocks always takes less voltage than the higher clocks later and that voltage will determine your maxs when you try and scale it...I may be wrong I'm sure if I am I'll hear of it smile.gif

Edit: @ashes wouldn't that put a lesser strain on it and not give realistic results one you try for the clock speed you really want? So you would be just testing fsb stability at those clocks not overall?
Edited by mfknjadagr8 - 10/12/15 at 12:28pm
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post #53783 of 67911
Quote:
Originally Posted by F3ERS 2 ASH3S View Post

YUPPERS,

keep in mind that it OCs the NB and SB and PCI links.. the bus really is what ties it all together. only tricky thing about it is that there are a few voltages that you have to keep in check and watch for.

I can change the PCI frequency separately from the FSB, is there something I'm missing?
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post #53784 of 67911
Quote:
Originally Posted by Benjiw View Post

Quote:
Originally Posted by F3ERS 2 ASH3S View Post

YUPPERS,

keep in mind that it OCs the NB and SB and PCI links.. the bus really is what ties it all together. only tricky thing about it is that there are a few voltages that you have to keep in check and watch for.

I can change the PCI frequency separately from the FSB, is there something I'm missing?

No I was speaking in general.. however lets say that PCIe is set to 104 and your FSB is set to 225, then the outcome of your PCI would be something like 115 (numbers are for an example and not of actual values since I don't have the numbers in front of me)
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post #53785 of 67911
Quote:
Originally Posted by F3ERS 2 ASH3S View Post

No I was speaking in general.. however lets say that PCIe is set to 104 and your FSB is set to 225, then the outcome of your PCI would be something like 115 (numbers are for an example and not of actual values since I don't have the numbers in front of me)

I am confused lol, I have my PCIe clocked to 110mhz nd my FSB set to 232mhz or close to it? Are you saying my PCI is clocked to 120? or close to it? Can I get some more information on this please so I can see what's going on? biggrin.gif
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post #53786 of 67911
Quote:
Originally Posted by Benjiw View Post

Quote:
Originally Posted by F3ERS 2 ASH3S View Post

No I was speaking in general.. however lets say that PCIe is set to 104 and your FSB is set to 225, then the outcome of your PCI would be something like 115 (numbers are for an example and not of actual values since I don't have the numbers in front of me)

I am confused lol, I have my PCIe clocked to 110mhz nd my FSB set to 232mhz or close to it? Are you saying my PCI is clocked to 120? or close to it? Can I get some more information on this please so I can see what's going on? biggrin.gif

Just like how you clock Ram.. when you raise the PCI you are just raising a multiplier, its far more subtle however it is easier to be unstable as well.. FSB is pretty much the arteries of the rig...
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post #53787 of 67911
Some boards allow a high FSB and a fixed PCIe frequency that is somehiw independent to FSB.

The goal in FSB OC is not to get the highest. But to stay within the realm of what the memory / CPU-NB / CPU, will allow as they are your limitting factor.

Say, 250. It can open a Memory OC of 2000 or 2333, etc. If your memory and it's allowed multi can cope, you're good.

The CPU-NB can be clocked to 2500, 2750 etc. Which can still fall to bootable values.

While the CPU may take that FSB. Just note that there are holes in the FSB values that a CPU can accept. So while bootable, it may not be stable.

Now, if these parameters allow a certain FSB, the testing will be the same. It may need some bumps on the Voltages but I would take it slow from there. And not relying on a single stress app is a good technique.

Prime Blend for overall stress.
Small FFT for the CPU Frequency and Voltage
HCI memtest for Memory etc.

Each reacts differently that I would use HCI first when dealing with FSB OC. As Memory can be harder to work out. While CPU-NB will either allow you to boot or no boot at all or errors on Benchmarks that lower the scores.
post #53788 of 67911
Long time lurker here, I have read this thread since day two I think. I have a 980 BE in my rig, and built it in hopes of putting Bulldozer in it, and found out that they were not too good. Just need the money to put the 8370 in it now, that's what I want. I have my 980 clocked at 4.2ghz 24/7 stable, just by reading this thread and listening to the guy's on here, and what they have gone through to get what they have gotten on their chips. They really know their stuff. Thank you Orkinman, you know how you are, GD-80 for the win. I write this only to tell you that you are really better to start off down low with your OC, and gradually work your way up!!! This way, you will learn your chip, and know what it needs to make it stable!!! It will let you know the limits of your board, and your chip, and help in the possibilities of not getting corruptions in your OS. It takes a little bit of time, but you will be far better off in the end. Trust me, these guy's know their sh**.The only other thing I think I can safely say is, I think that your boards is a 6+2 board, so be very careful on the cpu voltage end, because these chips really require an 8+2 board or better to overclock in the 4.6ghz range.
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post #53789 of 67911
Quote:
Originally Posted by STW1911 View Post

Long time lurker here, I have read this thread since day two I think. I have a 980 BE in my rig, and built it in hopes of putting Bulldozer in it, and found out that they were not too good. Just need the money to put the 8370 in it now, that's what I want. I have my 980 clocked at 4.2ghz 24/7 stable, just by reading this thread and listening to the guy's on here, and what they have gone through to get what they have gotten on their chips. They really know their stuff. Thank you Orkinman, you know how you are, GD-80 for the win. I write this only to tell you that you are really better to start off down low with your OC, and gradually work your way up!!! This way, you will learn your chip, and know what it needs to make it stable!!! It will let you know the limits of your board, and your chip, and help in the possibilities of not getting corruptions in your OS. It takes a little bit of time, but you will be far better off in the end. Trust me, these guy's know their sh**.The only other thing I think I can safely say is, I think that your boards is a 6+2 board, so be very careful on the cpu voltage end, because these chips really require an 8+2 board or better to overclock in the 4.6ghz range.

Nice OC on the deneb thumb.gif

There are a handful of guys here that do pretty well with the GD-80. Miklkit is the Air cooling champ and Knifemind has a multiplier locked X6 thuban on his that is hard to top.

Thanks for the kind words smile.gif
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post #53790 of 67911
Hi guys. Just went through testing the highest FSB I can get out of the FX.

What's the highest you guys have tried and validated? I can see me ranked 6th on the kitty together with some 315s on the BOT.

http://valid.x86.fr/index.html
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