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post #8571 of 67002
Quote:
Originally Posted by testface View Post

Hello,

Is anyone here using an aftermarket CPU fan / heatsink with the fx-8350? Which thermal compound and application method were used, and what temperatures are you seeing?

I ask because i've been researching this chip and thermal paste like mad. The cores being along the four corners of the chip seems to render the dot / pea method insufficient. The "X method" i was told would not create a flush interface between sink and cpu.

I have talked to AMD twice, and Arctic Silver twice, and Cooler Master once over the phone regarding the application of compound for this chip, and have heard different suggestions from each, some even suggesting the spread method, which i've heard to avoid from other sources.

I've also heard you don't want to go over 60c temperature, AMD's literature seems to suggest this (61c) for some FX-series chips, and then hear from someone at AMD that 70+c is nothing to be concerned about.

I've just been hearing so much conflicting, if not contradictory information, and would really appreciate the help of some who have actually done the testing.

TL;DR : What aftermarket cooler are your using, which thermal compound and compound application did you use, and what are your idle / load temperatures?

Cheers smile.gif...

Im using the hyper 212 evo cpu cooler with the cooler master thermal compound. I use the "grain of rice" method and my cpu hasnt cracked 50 degrees.
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post #8572 of 67002
Quote:
Originally Posted by SkateZilla View Post

shouldnt something used by all modules kinda be in the center?, roflmao.

You would think that would be obvious right? Although it's probably related to them recycling failed 8 Core models into 6 and 4 core models. (they can just laser off that section without issues from the IMC.

I say they put the IMC in the center and stop screwing around. Worst case scenario they have 2Ghz 8 Core models for sale right? Then there's no issue where the IMC is. tongue.gif
post #8573 of 67002
Quote:
Originally Posted by ComputerRestore View Post

You would think that would be obvious right? Although it's probably related to them recycling failed 8 Core models into 6 and 4 core models. (they can just laser off that section without issues from the IMC.

I say they put the IMC in the center and stop screwing around. Worst case scenario they have 2Ghz 8 Core models for sale right? Then there's no issue where the IMC is. tongue.gif

the can still disable modules with the IMC in the center.
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post #8574 of 67002
Thread Starter 
Quote:
Originally Posted by sdlvx View Post

Quote:
Originally Posted by testface View Post

Hello,

Is anyone here using an aftermarket CPU fan / heatsink with the fx-8350? Which thermal compound and application method were used, and what temperatures are you seeing?

I ask because i've been researching this chip and thermal paste like mad. The cores being along the four corners of the chip seems to render the dot / pea method insufficient. The "X method" i was told would not create a flush interface between sink and cpu.

I have talked to AMD twice, and Arctic Silver twice, and Cooler Master once over the phone regarding the application of compound for this chip, and have heard different suggestions from each, some even suggesting the spread method, which i've heard to avoid from other sources.

I've also heard you don't want to go over 60c temperature, AMD's literature seems to suggest this (61c) for some FX-series chips, and then hear from someone at AMD that 70+c is nothing to be concerned about.

I've just been hearing so much conflicting, if not contradictory information, and would really appreciate the help of some who have actually done the testing.

TL;DR : What aftermarket cooler are your using, which thermal compound and compound application did you use, and what are your idle / load temperatures?

Cheers smile.gif...

I am using Raystorm RS360 with GPU in the loop. I used Prolimatech Pk-01 and it seems to be very good. I only used a dot in the center. However I did do the x pattern on the GPU and it is icy cold. Like, it doesn't break 40c even at 1.25v and 1267/1450.

This cooler falls apart at 1.65v running IBT. That is well beyond recommended safe voltages so it's irrelevant I suppose.

Also, maximum temp is 70c and it degrades at 90c. AMD is just saying 62c to leave safe room. It is generally considered that you run 62c if you want to be safe and 70c if you want to live on the edge. 1.55v is maximum recommended vcore but i've gone beyond that for 24/7 and a few others have as well without any ill effects (yet).

"Max" = 62C
"OK" = 70's
Thermal shutdown = 90C
Degrade = 96C
Quote:
Originally Posted by ComputerRestore View Post

Quote:
Originally Posted by SkateZilla View Post

shouldnt something used by all modules kinda be in the center?, roflmao.

You would think that would be obvious right? Although it's probably related to them recycling failed 8 Core models into 6 and 4 core models. (they can just laser off that section without issues from the IMC.

I say they put the IMC in the center and stop screwing around. Worst case scenario they have 2Ghz 8 Core models for sale right? Then there's no issue where the IMC is. tongue.gif

All information from RAM goes through Cache anyway, which is in the center.

RAM -> L3 -> L2.

Also, you generally want the part that talks to ram to be as close to the ram as possible and vice versa. Trust me here; you do not know more then AMD does about building a chip.
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post #8575 of 67002
I found out why my socket temp is much higer than my core temp it isnt the the CPU that generates the Heat it is the small grey blocks between Cpu and Mosfet i dont know the name or what it is but its going real heat its going up to 75C+ after 10mins ibt.

I dont know how i got them cool think i buy a new Case with better air conditions...
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post #8576 of 67002
I fold @ 72-75's on my FX8320 quite often while i'm still on stock cooler tongue.gif

On a side note decided to get OCZ ZX 850W for my amd rig as i have bunch of hdd's and under higher oc power requirement is high to swap out my Chieftec 500W unit

Also bought the thingy which measures how much W is being pulled from wall , pretty sure my both rigs + router/table lighting and monitor (given pcs are at 100%) could be pulling close to 1kw
Edited by jellybeans69 - 2/15/13 at 3:39am
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post #8577 of 67002
Quote:
Originally Posted by KyadCK View Post

"Max" = 62C
"OK" = 70's
Thermal shutdown = 90C
Degrade = 96C
All information from RAM goes through Cache anyway, which is in the center.

RAM -> L3 -> L2.

Also, you generally want the part that talks to ram to be as close to the ram as possible and vice versa. Trust me here; you do not know more then AMD does about building a chip.

It looks like it's going Ram -> IMC and then splits off into each of the L3 Cache (there's better pictures that show the grids)

We definately don't know more than AMD about building chips, but as enthusiasts that push the limits, we probably see some things they don't.

If someone does try the lower NB/RAM speed to push their Overclock at lower voltages, please post your results.
post #8578 of 67002
Them engineers you know... they tend to miss the simple things. LOL (former engineering student)

My RASA kit couldn't handle my 8350 at 1.55v. So I just put in an order for a Koolance 380a today. Supposedly one of the top waterblocks to get now.
Edited by Krusher33 - 2/15/13 at 8:10am
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post #8579 of 67002
Quote:
Originally Posted by Krusher33 View Post

Them engineers you know... they tend to miss the simple things. LOL (former engineering student)

My RASA kit couldn't handle my 8350 at 1.55v. So I just put in an order for a Koolance 380a today. Supposedly one of the top waterblocks to get now.

I know what you mean, that Phenom II IMC bottleneck was a huge fiasco. thumb.gif (good thing for NB Overclocking)
post #8580 of 67002
Quote:
Originally Posted by ComputerRestore View Post

Warning: Spoiler! (Click to show)
Sorry, I didn't actually click the links. I just saw one link said Crosshair V Forumla and the other said Crosshair V Formula-Z
In other news, I was wondering if anyone would like to test this OC method: (as my Piledriver Rig is sold)

I'll post a couple pics to explain the reasoning.




The block, that's just to the left of the DDR3 is the IMC. See how far the other two cores are away, compared to the ones that are right next to the IMC.

I suspect that on the CPU that I had, the Cores that were of the highest performance were the ones directly next to the IMC.

So I wonder if you are able to get higher Overclock potential with lower heat, if you run with reduced NB speeds and reduced DRAM speeds.

I'd recommend running the NB 1600Mhz and DRAM 1600Mhz and then seeing how low you can run the CPU/NB Voltage.

What we could expect to see is less heat and resistance generated by the IMC and those lengthy pathways to the other Cores, to hopefully reach higher CPU Overclocks with less voltage and heat.

If that method works, then it's just a matter of figuring out if that low of Frequency for the IMC will bottleneck CPU performance and where to find a balance.
As well, installing the Windows 7 Hotfix's for Bulldozer, stopped some issues I was troubleshooting for an FX 8350 running some Steam Games. (COD: Black OPs and some others)
The issues included:
-freezing between maps
-complete system shutdown

Maybe the link to those on the Microsoft Website would make a good addition to the Main Page.

Wow this Is really awesome info here. I'll try it when I get home tonight at 6pm

Edit:
I just noticed that this may not help since I only have half the die, a FX4300. Hell, I'll still try it anyways. Its a good overclocker. 4.4ghz @ 1.35v will boot and run all day 4.5ghz 1.35v and even OCCT but then ill get a random BSOD at some point a day or two later.

Edit:
I was able to undervolt all the way down to 1.175v 3.8ghz the next voltage step down wouldn't POST. not sure if that will help or not.
Edited by zer0entropy - 2/15/13 at 9:09am
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