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OC FX-8120 BIOS settings for a stable 4500 MHz - Page 15

post #141 of 175
Thread Starter 
Quote:
Originally Posted by Kolovrat View Post

Try to get RAM with higher frequency as posible, FX will benefit from that because it's native support 1866Mhz
Same with me, after switching from G'skill 1600Mhz to A-Data 2000g which is standard 1600 and overckable up to 2000+Mhz
My overall overclock result went up with more stability and performance.

Sweet, good to hear!

I'm going to upgrade my case fans as well...Plus, I think I'll get a fan controller too...

I'm also going to mod my case by adding a couple of more cooling fan holes!

And think, all I was asking was how to be stable at 4500 MHz...

I'll keep everyone updated!

Cheers,

X

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post #142 of 175
Thread Starter 
Quote:
Originally Posted by Ryncrash View Post

XDJ1 just looked at your sig to see what your running i would tweak your system a tad bit. Run some test but you sould be in the 7's on Cinebench with that clock speed.

Your correct on that...I'm on a mission now!

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post #143 of 175
@Xdj1

Wow that is strange that your performance is so low at that clock.

I know that you are already order new DRAM, but did you happen to notice if you have them in the right slots?
Your score looks like when I was running my BD with Single Channel DRAM settings. (for testing purposes)
I was only hitting 6.0 @ 4.6Ghz running single channel.

For example my MOBO runs them in 1 and 3. I see a lot of DRAM stuck in slots 1 and 2, or 3 and 4 because they are side by side.

Either that or you were just getting some extreme Thermal Throttling

I usually get 7.55 on Cinebench @ 4.6Ghz

Some of the Testing I did for DRAM, if you are interested
Edited by ComputerRestore - 4/23/12 at 5:24pm
post #144 of 175
Thread Starter 
Quote:
Originally Posted by ComputerRestore View Post

@Xdj1
Wow that is strange that your performance is so low at that clock.
I know that you are already order new DRAM, but did you happen to notice if you have them in the right slots?
Your score looks like when I was running my BD with Single Channel DRAM settings. (for testing purposes)
I was only hitting 6.0 @ 4.6Ghz running single channel.
For example my MOBO runs them in 1 and 3. I see a lot of DRAM stuck in slots 1 and 2, or 3 and 4 because they are side by side.
Either that or you were just getting some extreme Thermal Throttling
I usually get 7.55 on Cinebench @ 4.6Ghz
Some of the Testing I did for DRAM, if you are interested

Yes, the RAM is in the correct spot, thanks...

My RAM is back ordered, frown.gif

Thanks for the info.

I'll update when I received my new memory!
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post #145 of 175
Thread Starter 
*** Update ***

Ok...

Just received my new memory, G.Skill's ARES 2133 9-11-10 1.65V 2x4 GB.

Plus, some more powerful case fans, 70 to 120 CFM. That should move some air!

Time to test the system again!!!

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post #146 of 175
DAMN! drool.gif

Some tips from AMD;

Memory Performance tuning – AM3+ / DDR3
PLEASE NOTE THAT THE AMD PRODUCT WARRANTY DOES NOT COVER DAMAGES CAUSED BY
RUNNING COMPONENTS OUTSIDE OF SPECIFICATION INCLUDING DAMAGES CAUSED BY
OVERCLOCKING (EVEN WHEN OVERCLOCKING IS ENABLED WITH THE AMD OVERDRIVE UTILITY).
Memory clock speed is tied to HT ref. clock with certain ratios. The following Memory clock modes are
available on the AMD “Scorpius” platform technology with AM3+ socket and DDR3 support:
• DDR3-800 (400MHz) – 2:1 ratio
• DDR3-1066 (533MHz) – 8:3 ratio
• DDR3-1333 (667MHz) – 10:3 ratio
• DDR2-1600 (800MHz) – 4:1 ratio
• DDR3-1866 (933MHz) – 14:3 ratio
• DDR3-2133 (1066MHz) – 16:3 ratio *
• DDR3-2400 (1200MHz) – 6:1 ratio *
(* = not an officially supported memory clock mode
In the case of AM3+ DDR3 platform and AMD FX-series CPUs there are two key strategies for Memory tuning:
1) utilize the maximum memory clock mode that matches your DIMM module specification (or known
performance tuning headroom) - example DDR3-1866 or DDR3-2133 mode with CL9-11-9 timings
2) utilize a lower memory clock mode with faster CL5-5-5…CL7-7-7 timings and HT ref. clock boost (the
amount of HT ref. clock boost will depend on the DIMM OC headroom) – example DDR3-1600 mode
with CL6-6-6 timings
Please refer to the DIMM module specification to determine the optimal Memory voltage value (example 1.65V).
The optimal Tras and Trc timing parameter value is calculated as follows:
Tras = Tcl + Trcd + Trp
Example: Tras should be set to 21 in case of CL7-7-7 -settings
Trc = Tras + Tcl
Example: Trc should be set to 28 in case of CL7 + Tras = 21 -settings
NOTE: Setting Trc to a higher value may improve the margins – example: 42
Enabling 2T –timing mode can improve stability with 4GB or 8GB memory configurations (but will cause a slight
performance hit).
The Memory controller of AMD Phenom and AMD Phenom II CPUs can be set to run in Ganged mode or in
Unganged mode. Ganged mode means that there is a single 128bit wide dual-channel DRAM Controller (DCT)
enabled. Unganged mode enables two 64bit wide DRAM Controllers (DCT0 and DCT1).
The recommended setting in most cases is the Unganged memory mode. Ganged mode may allow slightly
higher Memory performance tuning and performs well in single-threaded benchmarks.
Depending on the motherboard and BIOS, it may be required manually setting the timing parameters for each
DCT (in Unganged mode) when performance tuning the memory or fine tuning the timings. Some BIOS
versions apply the same timings automatically for both DCTs in an Unganged mode.
The DIMM slots furthest away from the CPU socket should be equipped first (usually marked as DIMM slot 1&3
or A2&B2).

Edited by 2advanced - 4/28/12 at 2:57am
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post #147 of 175
Thread Starter 
@2advanced:

Thanks for the info!

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post #148 of 175
any stable 4.6-4.7ghz overclock setting?

thanks OCN!
thug!
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post #149 of 175
Quote:
Originally Posted by jayflores View Post

any stable 4.6-4.7ghz overclock setting?
thanks OCN!

You should head over to Bulldozer Owners Club. Best resource for all things Bulldozer
post #150 of 175
Thread Starter 
Hi All,

Sorry for not posting for awhile...

Ok, I have installed my new RAM and case fans and with the help from damric, have had a stable system running at 4699 MHz with a Cine score of 6.82.

I have had 7.08 score at 4.35 GHz but can not remember the settings and did this very early on in my build so I was very limited to OC'ing my FX 8120. I would be very happy if I could break the 7 barrier again but can't seem to do it!

Any suggestions????

My settings:


Voltages

Vcore 1.488
DRAM 1.65
NB 1.110
CPU NB 1.4

Freq.

CPU Ratio 4693
NB 2470
FSB 247
HT Link 2964
Mem 1976


Or maybe that's the best my chip can deliver and the 7 in Cine was a fluke!!!

Cheers

PS. Thanks to 2advanced for his help as well! thumb.gif
Edited by Xdj1 - 6/1/12 at 7:18pm
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