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AMD FX (Bulldozer) Owners Club! - Page 259

post #2581 of 8112
Quote:
Originally Posted by DevilDriver View Post

well been tweaking on this thing abit.
Got my cpu/nb and HT both to 2610Mhz
cpu/nb took 1.275v, HT took 1.25v.
Brought my latency down to 59.1 in maxxmem, and in AIDA64 latency is 45.2
Also finally broke 10,000 in geekbench 2.2
To answer the FSB question and maybe we can get a list going, I was able to get my FX-6100 stable up to 275 FSB.
Also it seems to be above 4.5Ghz where I need to start putting voltage to my chip. I've had this thing run and bench at 4.2Ghz with 1.27 vcore

It took me 1.38 to get my NB to 2400mhz, is this because I am only using the multiplier? would changing the FSB make it so I wouldnt have to use as much voltage?

EDIT: to answer my own question, yes, by changing my FSB I am able to lower the NB/CPU voltage to 1.3v. And my windows is working, awesome
Edited by RedSunRises - 1/3/12 at 2:59pm
post #2582 of 8112
Quote:
Originally Posted by mav2000 View Post

Thanks for that. But why cant a software be written to take this "arbitrary scale" into accoutn and project the real temperatures that a user may want to see.
I think on an Intel chip, actual temps can be seen, rather than an arbitrary number that may or may not be your temps as you are using it.
Also when we say 70 degrees, does that mean that all temps are arbitrary till 70 degrees?

No because both Intel and AMD consider the max operating temp for their process a trade secret. And I think it's no problem. Why do you want to know the absolute temperature? AMD says "70" on whatever scale is the maximum and Intel says "0" on their scale is max. Neither tells you the absolute temperature and any tool that pretends to display a "degrees C" temperature on an absolute scale is lying. When you get to the limit you crank your fans and pumps to the max and if you exceed it significantly you're running too hot.
Both Intel and AMD say that the temperature sensors get more inaccurate the lower they go because they're calibrated to be accurate at the high end. But both scales are supposed to be 1:1 near the limit, i.e. "69" means "1 degree C below the limit" on AMD and "-1" means "one degree C below the limit" on Intel.
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post #2583 of 8112
speaking of temps with these things. Has any one else noticed coretemp has a tjmax of 90° for them not 70° like previous AMD cpu's? headscratch.gif
Edited by DevilDriver - 1/3/12 at 4:18pm
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post #2584 of 8112
yes i have noticed.

i dunno about FX max temp, but if makes you feel any better i was cleaning my rad the other day. Plugged everything back in, and fired the computer up. Water pump had a air bubble, so no liquid was flowing through the water block. Got so Hot the computer turned itself off after about 10 seconds. Of coarse i turn it back on, it shuts right back off. I feed 12 volts to directly to the water pump and get liquid flowing again while tapping it to rid myself of that nasty air bubble.

The Cpu lived through 90c+
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post #2585 of 8112
I did a lot of testing with different fsb, cpu/nb, and ht link speeds. I did different cpu/nb and ht speeds for 200Mhz, 225Mhz, 250Mhz, 260Mhz, 275Mhz FSB speeds.

There is no considerable change in performance when altering these frequencies. I have a list of number I would like to post but I got to figure out the best way to do it since there are so many.

Also I am getting some really low temps right now and I have been able to to run cinebench at 5.25Ghz.

These are my temps right now at 4.2Ghz.

338

These are my temps at 5.2Ghz.

338

This is what I was able to get on cinebench at 5.25Ghz. Not stable though. Most I could get stable was 5.1Ghz.

338

338

I am really considering disabling the overvolt protection and increasing voltage to 1.65v and seeing how far I can take it.
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post #2586 of 8112
Quote:
Originally Posted by DevilDriver View Post

speaking of temps with these things. Has any one else noticed coretemp has a tjmax of 90° for them not 70° like previous AMD cpu's? headscratch.gif

I'm pretty sure it's between 90 and 100C these days. Laptop CPUs run at those temps all the time due to their limited cooling. Yes you'd want a little more margin in a big desktop CPU that can burn more power but probably not much.
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post #2587 of 8112
Mike you sure thats the minimum for 5.2ghz cinebench?

I can do that with 1.55v and LLC set to the second highest (high maybe)?
post #2588 of 8112
Quote:
I am really considering disabling the overvolt protection and increasing voltage to 1.65v and seeing how far I can take it.

Bro, I dont wanna see nothing bad happen but I would SO LOVE if you could bring er up a notch! I mean what if these are "safe" up to 90C? What if AMD really don't want people to know that because of people pushing that envelope too much and all of the rma'd cpu's. What if you had 30 more degrees celsius on your fx cpu??? That's 86F more! Imagine what you could do and what clocks you could reach. Man be throwing 1.7V's on it for 5.8 ghz and destroying other cpu's out there.

******PLEASE NOTE THAT THESE STATEMENTS ARE NOT OFFICIAL OR EVEN TESTED FOR THAT MATTER. DO NOT TRY THIS AT HOME. UNLESS MONEY ISN'T AN OPTION AND YOU WANNA TEST THESE SETTINGS FOR THE BENEFIT OF OTHERS. ******

LOL, an 8120/50 at 5.8/6ghz would smoke ....... ah not gonna start a flame war. those certain people would be on it like flies on you know what!

Moral of the story Mike, do as you wish and i shall support you no matter the decision haha
    
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post #2589 of 8112
Quote:
Originally Posted by dstoler View Post

Bro, I dont wanna see nothing bad happen but I would SO LOVE if you could bring er up a notch! I mean what if these are "safe" up to 90C? What if AMD really don't want people to know that because of people pushing that envelope too much and all of the rma'd cpu's. What if you had 30 more degrees celsius on your fx cpu??? That's 86F more! Imagine what you could do and what clocks you could reach. Man be throwing 1.7V's on it for 5.8 ghz and destroying other cpu's out there.
******PLEASE NOTE THAT THESE STATEMENTS ARE NOT OFFICIAL OR EVEN TESTED FOR THAT MATTER. DO NOT TRY THIS AT HOME. UNLESS MONEY ISN'T AN OPTION AND YOU WANNA TEST THESE SETTINGS FOR THE BENEFIT OF OTHERS. ******
LOL, an 8120/50 at 5.8/6ghz would smoke ....... ah not gonna start a flame war. those certain people would be on it like flies on you know what!
Moral of the story Mike, do as you wish and i shall support you no matter the decision haha

I know these chips vary but with mine, if it doesn't like temps, it won't let me go further regardless of voltage. I would guesstimate max safe temp to be 75c and not for extended periods of time. But the FX chips supposedly have a feature now that is similar to Intel's prochot which shuts down the system if temps get too high. I've taken mine up to 70c but it hasn't shut down, really don't want to test my chip's limits since it's all I have at the moment lol. I remember on Intel cpus, Nehalems anyway, the temp for prochot to engage was around 90c.
post #2590 of 8112
Hey CP whats up man. Yea I was being vey over zealous in my post. Was not serious and I can imagine that there is just TOO big a wall there once you get in the 5ghz and up range. so temps arent a problem but other things are. I was looking at some phase change coolers with bulldozer on them and dudes have 5.8 to 6ghz. I wonder if they can run that 24/7 or atleast get some good benches from it. I jsut would like to see some game benchmarks at 6ghz with an fx and 4x7970 or something lol. EXTREME overclocking right there
    
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