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what is the AMD FX 8350 NB overclocking sweetspot

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post #1 of 29 (permalink) Old 04-16-2013, 07:45 AM - Thread Starter
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yes I have a amd fx 8350 I have overclocked to 4.6ghz x8 I leave it here due to better stability temperature is not the issue or power draw I like to keep my volts low in this case 1.368v for 4.6ghz x8. I am now working on the NB now due to past experience with amd cpu's NB seems to be biggest improvement is this still the case at sec I got mine upto 2400mhz. I am still waiting on my other ram to arrive to go that route I also want to point out I am using cool laboratories liquid metal ultra everything is copper so I am good there lol.


I will be running 16gb 4x 4gb sticks of 1866mhz corsair dominator platinum ram.

here is a cpuz of my setup
http://valid.canardpc.com/2771830

i dont know why i did it or why i will do it again

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post #2 of 29 (permalink) Old 04-16-2013, 07:50 AM - Thread Starter
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I also want to point out this isn't my main rig it is already setup and running with system specs listed in my signature this is a testbed rig that will soon be sold to my soon to be brother in law hince why I am after best possible performance / stability he wont like a unstable setup lol. I also want to say almost everything within it is identical to my main rig making a duplicate but I had issues with mine with the NB overclock couldn't get it 100% at 2600mhz but could 2400mhz which is why I started this thread lol.

i dont know why i did it or why i will do it again

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post #3 of 29 (permalink) Old 04-16-2013, 07:51 AM
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There is really no performance boost with ocing the NB on the FX chips. The performance boost with the NB is on Phenom II/Athlon II chips only.

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post #4 of 29 (permalink) Old 04-16-2013, 07:57 AM - Thread Starter
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Ok well with just a bump of 200mhz I seen a noticeable diffrerence in speed with a ssd of course and my main rig has the same ram and everything at 1866mhz on all 4 sticks it was more responsive if you get my meening and in almost every case scored higher in stuff like 3dmark vantage / 06 by around 200 points for a 200mhz boost to NB.

i dont know why i did it or why i will do it again

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post #5 of 29 (permalink) Old 04-16-2013, 08:02 AM - Thread Starter
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I am aware I got lucky with my cpu being capable of handling 4 sticks of 1866mhz ram at 1866mhz and manual timings of 9-10-9-27 and voltage of 1.525v. I am very aware many of these the memory controller cant handle it lol but I got lucky lol. I am fully expecting this second rig not to be capable of it and might have to bump it back to 1600mhz and tighten timings a bit I opened this post / thread to get the common sweet spot on NB settings it is very hard to find any info on the NB overclocking and such for these cpu's.

i dont know why i did it or why i will do it again

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post #6 of 29 (permalink) Old 04-16-2013, 08:08 AM
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For a good time, hit CTRL + F and type "lol".
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post #7 of 29 (permalink) Old 04-16-2013, 08:15 AM - Thread Starter
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I just did that and some script popped up *** is that all about lol .

i dont know why i did it or why i will do it again

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post #8 of 29 (permalink) Old 04-18-2013, 09:01 AM
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2400 to 2600 is about right for the CPU/NB and you also want to set the HT Link speed to match. For some reason, you get the best performance when they're both set about to 2500. There is a thread on here somewhere that has benches with different CPU/NB and HT Link scaling and each around 2500 was where it seemed to work best.

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post #9 of 29 (permalink) Old 04-20-2013, 02:02 PM
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Quote:
Originally Posted by MacLeod View Post

2400 to 2600 is about right for the CPU/NB and you also want to set the HT Link speed to match. For some reason, you get the best performance when they're both set about to 2500. There is a thread on here somewhere that has benches with different CPU/NB and HT Link scaling and each around 2500 was where it seemed to work best.

This may or may not be the thread you are referring to, however, all in all, this thread was pretty damned stellar in helping me revamp my OC and kick the crap out of my "old" OC. Don't let the "Bulldozer" title fool you, this worked incredibly well on my FX-8350, using CHV-Z mobo. Hope this helps you as much as it helped me! smile.gif

https://www.overclock.net/t/1140459/bulldozer-overclocking-guide-performance-scaling-charts-max-ocs-ln2-results-coming
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post #10 of 29 (permalink) Old 04-20-2013, 04:49 PM
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Yes, that is the thread I was talking about. Extremely valuable information in that one right there. And I agree that you can use the same steps you use for Bulldozer with Piledriver. Their architectures aren't that different so a lot of the tricks you use for BD should work for PD as well.

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