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post #2421 of 10657
Quote:
Originally Posted by ebduncan View Post

guys tmp3 is not the CPU TEMP!
TM3 is the north bridge temp.
gigabyte support confirms this, my results confirm this. Don't believe me or gigabyte? put a fan on your northbridge and watch tmp3 temps drop!
on the ud3 the north bridge runs pretty darn hot. On the ud5-7 they have somewhat improved cooling on the north bridge possibly because of the extra PCI-Express lanes causing more load on the north bridge.
anywho yes the north bridge runs hot, its not a problem. I added a fan to mine for added insurance and since i'm overclocked maybe better fsb headroom.

^he is right about TMPIN 3 being the NB.


Proof. This subject has been beaten to death, many time's. This info should be posted on the front page **hint hint**.

According to Gigabyte support they test the NB temps to 80c and it was safe.
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post #2422 of 10657
Quote:
Originally Posted by KhaoticKomputing View Post

All I did was change out the board to a UD3 and I am at 4.0Ghz CPU @ 1.45v(1.44v after Vdroop kicks in) with a 2800Mhz NB freq @1.30v. Thing is rock solid stable on air.
Quote:
Originally Posted by MadGoat View Post

I did some more tweaking because I kept getting a random crash that seemed linked to memory somehow.
I found stability by uping my NB to 1.4 from 1.375 and using some more FSB to get to clock. This also enabled me to DRAMATICALLY drop my CPU voltage... which dropped my temps. thumb.gif
Quote:
Originally Posted by KhaoticKomputing View Post

According to Gigabyte support they test the NB temps to 80c and it was safe.

There are NO negative effects from having your NB temp that high? What kind of gains are you seeing from having your NB at 2800 and how does upping the volts as high as 1.4 affect the temps? Thanks!
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post #2423 of 10657
Quote:
Originally Posted by MadGoat View Post

if I where to take a stab at it, I say none of them are related to the CPU.

I'd figure that the sensors are monitoring ambient (case temps), northbridge, and mosfet temps...

That would make sense, but how would I explain BOTH Coret Temp and OHM showing my CPU staying the same temp at idle and load? I could see that temp 2 might be the NB, but that wouldn't explain my CPU temp not changing?
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post #2424 of 10657
Quote:
Originally Posted by Shadow_Foxx View Post

There are NO negative effects from having your NB temp that high? What kind of gains are you seeing from having your NB at 2800 and how does upping the volts as high as 1.4 affect the temps? Thanks!

I run my NB at 2800 with 1.35v never had to go past that, even when playing with 3000 NB. Highest temps I have ever seen my UD3 NB is at 57c I'm using the stock heat sink and TIM, no washer trick smile.gif Thats after hours of prime95. Room temp was 85f/29.4c... NB temps have not held me back in overclocking or anything. Never had a problem with my board.

There are a bunch of reasons to push your NB that far! First off its a must on Denab Phenom II's for 2 big reasons. When pushing the overclock its a must for stability. Most of the people on here that have problems with OCing don't push the CPU/NB enough. Second, You will see more performance boost overclocking the CPU/NB than you will just clocking the CPU. Its a big performance boost:)

according to gigabyte there are NO negative side affects from having your NB run that hot. However, if your overclocking to the max, having your NB ridding at 80c might be a stability issue? just like with the PII's 62c is max but anything past 55c "might" pose a problem with high clock stability.

IMO if your running stock clocks 80c would be HARD to get to from my experiance with the board, and when overclocking I would feel better about being 70c ish or lower(Never been close with 1.35v). Mind you I have nothing at all to back this up, pure assumption on my behalf based on what I know about basic electronics and heat:(
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post #2425 of 10657
Quote:
Originally Posted by Shadow_Foxx View Post

There are NO negative effects from having your NB temp that high? What kind of gains are you seeing from having your NB at 2800 and how does upping the volts as high as 1.4 affect the temps? Thanks!


Good Info:

http://www.overclock.net/t/933649/northbridge-speed-and-low-ram-timing-significance-on-amd-platforms

http://benchmarkreviews.com/index.php?option=com_content&task=view&id=335&Itemid=63&limit=1&limitstart=10
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post #2426 of 10657
Quote:
Originally Posted by KhaoticKomputing View Post

I run my NB at 2800 with 1.35v never had to go past that, even when playing with 3000 NB. Highest temps I have ever seen my UD3 NB is at 57c I'm using the stock heat sink and TIM, no washer trick smile.gif Thats after hours of prime95. Room temp was 85f/29.4c... NB temps have not held me back in overclocking or anything. Never had a problem with my board.
There are a bunch of reasons to push your NB that far! First off its a must on Denab Phenom II's for 2 big reasons. When pushing the overclock its a must for stability. Most of the people on here that have problems with OCing don't push the CPU/NB enough. Second, You will see more performance boost overclocking the CPU/NB than you will just clocking the CPU. Its a big performance boost:)
according to gigabyte there are NO negative side affects from having your NB run that hot. However, if your overclocking to the max, having your NB ridding at 80c might be a stability issue? just like with the PII's 62c is max but anything past 55c "might" pose a problem with high clock stability.
IMO if your running stock clocks 80c would be HARD to get to from my experiance with the board, and when overclocking I would feel better about being 70c ish or lower(Never been close with 1.35v). Mind you I have nothing at all to back this up, pure assumption on my behalf based on what I know about basic electronics and heat:(

Although dead on about the performance benefits and that most don't push th NB up when OC'ing AMD chips...

One thing needs to be CLEARED UP.

The NB in question regarding overclocking is NOT related to the motherboard AT ALL.

This is a little confusing and has caused a lot of problems with people overvolting the WRONG NB.

The NB that is overclocked on AMD systems of today, is the integrated Memory controller on the actual CPU die itself. CPU/NB = Memory controller = NB = AMD NB = Northbridge

The "Northbridge" can also be referring to the northbridge of the motherboard. The Motherboard has a North and South bridge responsible to everything from Usb, PciE links, Sata, Ide, etc...

The Northbridge of the motherboard in the Gigabyte 990fxa-udx series boards is refered to as the "NORTHBRIDGE" and NB.

The AMD on die Memory controller NB is referred to in the Bios as the CPU/NB (CPU Northbridge).

Makes sure you are applying the right voltage to the right Northbridge! Increasing voltage on the "motherboard" northbridge (motherboard NB) will only increase motherboard NB temps, it will not increase the overclocking headroom of the northbridge (actual memory controller on the CPU) which is the intended goal.



Now, the reasoning behind this retarded naming confusion?!?

Before Memory controllers were integrated onto the CPU die, they were located on the NORTHBRIDGE of the motherboard
. The motherboard was responsible for all memory activities in the system. So when the term Northbridge was used, it was common knowledge that the main portion of the Northbridge logic was the memory controller.

Then came along AMD's incorporated "ON DIE Memory Controller" (or IMC - integrated memory controller). They Still retained the Northbridge moniker even though now it was incorporated on the actual CPU die.

HOWEVER, while this is all good and well, there is still a system controller located on the motherboard that is referred to as the NORTHBRIDGE. And for all intents and purposes is actually the true northbridge. (While the "Northbridge" that is now located on the CPU die is in all reality the "Memory controller")

...
Edited by MadGoat - 1/8/12 at 8:21pm
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post #2427 of 10657
Well im glad to know that the temp 3 is the NB temp. I had to bump up from 1.35v to 1.45v on the CPU-NB voltage just to boot into windows at 3150mhz, and its even stable at that voltage. The thing is my NB or my CPU temp didnt go up at all. My NB is at 30c and CPU idles at 26c. Temps were the same with my sig rig below
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post #2428 of 10657
i had to jump to 1.4 cpu/nb for stability @ 2.85 as well,

But if you have a decent cooler i doubt anyone will see a discernible difference in temp. I did however see a jump in wattage. Which is another reason why I gave up the quest for 4.2ghz. My proc just needs too much voltage to get there.

Temps aren't an issue, its just CRAZY too much wattage at 1.55 compared to 1.44 @ 4.04...
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post #2429 of 10657
For starters, I want to apologize for bad English.I hope to ask for some help, my configuration is GA-990FXA-UD3 / Phenom II X4 945 / Alpenfohn Matterhorn / 8GB Corsair Vengeance DDR3-1600 (CL 8-8-8-24) / HAF 912 Plus / CM SILENT PRO M600 / MSI 5770 HAWK / ASUS VW222U / Microsoft Reclusa / SPINPOINT F3 500gb / A4Tech XL-760H / ZM-MFC3 /.I ill try to stabilize my processor to 3.6 ghz, but is fail.I ill try voltage cpu core 1.425, nb vid 1.25 , NB 2160 and HT 2160, ram 1279 mhz (10-10-10-24), tried and 1600 (8-8-8-24 1 t, 2 t 9-9-9-24 1 t, 2t), as I do 10 minutes prime is a blue screen, where I'm wrong?Here is the picture: 15979745523290146041325530678X1IbbbJSABme9XM1j0kh_s.PNG
post #2430 of 10657
Quote:
Originally Posted by MadGoat View Post

Although dead on about the performance benefits and that most don't push th NB up when OC'ing AMD chips...
One thing needs to be CLEARED UP.
The NB in question regarding overclocking is NOT related to the motherboard AT ALL.
This is a little confusing and has caused a lot of problems with people overvolting the WRONG NB.
.

Correct! Sorry if my post was misleading or confusing.
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