Topic Title: FX-8350 Overclocking
Topic Summary: Temperatures...for NB, SB, voltages for CPU/NB, NB...
Created On: 03/30/2014 08:13 PM
Status: Post and Reply
Linear : Threading : Single : Branch
1 2 Next Last unread
Search Topic Search Topic
Topic Tools Topic Tools
View similar topics View similar topics
View topic in raw text format. Print this topic.
 03/30/2014 08:13 PM
User is offline View Users Profile Print this message

Author Icon
-rascal-
Farming Materials

Posts: 538
Joined: 01/15/2011

I've decided to start tweaking my FX-8350, and overclocking the CPU/NB to start.

From the information I've gathered from the interwebs, it's best to no exceed a voltage of ~1.3V - 1.35V for the CPU/NB.

There is also a "rule" saying the HT Link frequency should not exceed the CPU/NB frequency. THe HT Link should be at the same frequency or slightly lower than the CPU/NB frequency.

Achieving a CPU/NB beyond 2600MHz - 2700MHz is not very common.

Out of all the digging around so far, I can't exactly find anything regarding about the suitable temperature for the NB.

 

As of now:

  • CPU/NB is set to 2800MHz (stock is 2200MHz)
  • HT Link is set to 2600MHz (stock is 2600MHz)
  • CPU/NB voltage is set to 1.3V with CPU/NB LLC on High
  • NB voltage is set to 1.23V
  • According to HWMonitor and AIDA64, my NB is operating at 47*C

I did see some people mentioning keeping the NB voltage low - ideally under 40 or 44*C; do you think 47*C is a little high?

I'm going to run some tests now to see if 2800MHz CPU/NB is stable...



-------------------------

Phenom II X6 1090T @ 4.1GHz FX-8350 @ 4.8GHz // ASUS Crosshair V Formula 990FX // Sapphire Radeon HD Dual-X 7970 @ 1150/1500 // Thermaltake Frio w/ push-pull (using Antec Formula 7 Nano-Diamond + Cooler Master JetFlo fans) // 8GB (2 X 4GB) G.Skill RipJawsX 2133MHz  // Corsair TX850 850W // Corsair Force GT 120GB SSD (OS) // Kingston V200+ 120GB SSD // WD Caviar Black 1TB // Windows 7 Ult x64

 03/31/2014 02:19 AM
User is offline View Users Profile Print this message

Author Icon
Dark Fief
Peon

Posts: 10
Joined: 03/29/2014

Hey buddy, 

You my friend are a lucky man. Just do it in the BIOS. You have AI Tweaker bc you have the 990. As for heat, I think in general anything above 50-60 other than the GPU should be throttled down.

I have the fx-8300, which is an OEM cpu in an ASUS M51-BC model I bought. I am able to use overdrive in it, but it is not cool. its actually a little scary. For you, unless you cannot do it in the bios, I would shy away or you might BLOWT IT UP

with my fan setup, my cpi idles at 17C... I know I can do it, but this is terrible software...Can I use another BIOS? I built a computer with the same mobo but I swear, the ONLY mobo I can find ANYWHERE that only has 1 pcie is the OEM one. Also, all the other mobo BIOS have AI Tweaker. My advanced Asus Bios options are, Monitor, Boot, Blah, Blah...No AI Tweaker. 



-------------------------

pffft Asus OEM, M51-BC
fx-8300 3.3-4.2ghz swapped HS w/ fx-6350
12gb ram
evga 760 gtx 2gb
92mm Noctua exhaust (rear) 92mm Delta 92 mm pull front bott
120m CA120 white led (wall pull)
92 Delta mm fr bot pull (ghetto holes drilt frt case) SS Pro SSD 128gb Win 8

 03/31/2014 09:20 AM
User is offline View Users Profile Print this message

Author Icon
AMDforMe
Farming Materials

Posts: 600
Joined: 09/08/2013

In my testing the following works best but each CPU/mobo/RAM combo is different.

HT= 2600 MHz.

NB = 2600 MHz.

CPU NB = ~1.3

HT = 1.25v

RAM = +.05v from default



-------------------------

Building a reliable PC involves more than just assembling the parts. You need to be able to configure all of the BIOS settings appropriately. This can be quite involved and frustrating as it can require a lot of trial and error with stress testing. It is however often the only means to get a 100% reliable PC.



Edited: 03/31/2014 at 12:14 PM by AMDforMe
 03/31/2014 09:29 AM
User is online View Users Profile Print this message

Author Icon
black_zion
80 Column Mind

Posts: 12332
Joined: 04/17/2008

Don't worry over CPU/NB speeds, the real world non server and non HPC difference between 5200MT/s and 5600MT/s (as it is a bi-directional link) outside of benchmarks is negligible with DDR3 1600, much less DDR3 2133.

-------------------------
ASUS Sabertooth 990FX/Gen3 R2, FX-8350 w/ Corsair H60, 8 GiB G.SKILL RipjawsX DDR3-2133, XFX HD 7970 Ghz, 512GB Vertex 4, 256GB Vector, 240GB Agility 3, Creative X-Fi Titanium w/ Creative Gigaworks S750, SeaSonic X750, HP ZR2440w, Win 7 Ultimate x64
 04/02/2014 03:03 AM
User is offline View Users Profile Print this message

Author Icon
-rascal-
Farming Materials

Posts: 538
Joined: 01/15/2011

Aftering having this up in the CPU section, I totally forgot we had a Overclocking/Modding sub-section. Doh!

Originally posted by: Dark Fief Hey buddy, 

You my friend are a lucky man. Just do it in the BIOS. You have AI Tweaker bc you have the 990. As for heat, I think in general anything above 50-60 other than the GPU should be throttled down.

I have the fx-8300, which is an OEM cpu in an ASUS M51-BC model I bought. I am able to use overdrive in it, but it is not cool. its actually a little scary. For you, unless you cannot do it in the bios, I would shy away or you might BLOWT IT UP

with my fan setup, my cpi idles at 17C... I know I can do it, but this is terrible software...Can I use another BIOS? I built a computer with the same mobo but I swear, the ONLY mobo I can find ANYWHERE that only has 1 pcie is the OEM one. Also, all the other mobo BIOS have AI Tweaker. My advanced Asus Bios options are, Monitor, Boot, Blah, Blah...No AI Tweaker. 

I perfer doing all the overclocking in the BIOS anyways. AI tweaker / AI Suite works, but IMO, it's a little buggy. I am itching a little to try out ROG connect with my laptop, though...

Yeah, I assumed somewhere in between 50*C - 60*C the safe operating temperatures for the NrthBridge and SouthBridge chipsets.

17*C idle?? What's your room temperature. I think the software you are using is showing incorrect temperature readings. With tpyical air or water-cooling, the CPU cannot physically be lower temperature than ambient.

If you are using the OEM ASUS motherboard, I'm a afriad you are stuck with the BIOS they provide...of course, if you decide to use a modified BIOS. Another option would be to swap the OEM motherboard out with a retail board (i.e. ones that you can buy from computer sotres / retailers). You would have to do a fresh install of your Operating System...and/ or obtain another Product key.

Originally posted by: AMDforMe In my testing the following works best but each CPU/mobo/RAM combo is different.

 

HT= 2600 MHz.

NB = 2600 MHz.

 

CPU NB = ~1.3

 

HT = 1.25v

 

RAM = +.05v from default

 

Ah, great. Thank you.

I did some testing with CPU-NB set to 2800MHz...

  • It wouldn't always pass POST (Q LEDs showing DRAM error?) all the time. It would struggle after every few power-on's / resets
  • Crashes in Prime95 a few minutes in

2600MHz seems good so far.

I will give the settings you provided a go (especially the voltages).

Originally posted by: black_zion Don't worry over CPU/NB speeds, the real world non server and non HPC difference between 5200MT/s and 5600MT/s (as it is a bi-directional link) outside of benchmarks is negligible with DDR3 1600, much less DDR3 2133.

Oh, ok. I think I will stick with 2600MHz then (as I said above, 2800MHz isn't exactly 100% stable).



-------------------------

Phenom II X6 1090T @ 4.1GHz FX-8350 @ 4.8GHz // ASUS Crosshair V Formula 990FX // Sapphire Radeon HD Dual-X 7970 @ 1150/1500 // Thermaltake Frio w/ push-pull (using Antec Formula 7 Nano-Diamond + Cooler Master JetFlo fans) // 8GB (2 X 4GB) G.Skill RipJawsX 2133MHz  // Corsair TX850 850W // Corsair Force GT 120GB SSD (OS) // Kingston V200+ 120GB SSD // WD Caviar Black 1TB // Windows 7 Ult x64

 04/02/2014 04:53 AM
User is offline View Users Profile Print this message

Author Icon
cirius
Peon

Posts: 3
Joined: 04/02/2014

Hello, I'm interested in the official information about the AMD processor temperatures Vishera (FX).

What is the maximum allowable temperature of processor cores, where it can be read in the documentation.

 

 04/02/2014 06:50 AM
User is offline View Users Profile Print this message

Author Icon
VWM
Peon

Posts: 29
Joined: 12/05/2013

I quote:

Maximum operating temperature

2012-11-15 18:47:40
Posted by: Eliot O Loney

I contacted AMD today and they told me that the Maximum operating temperature is 60°C just in case anyone wanted to know.

from: http://www.cpu-world.com/CPUs/Bulldozer/AMD-FX-Series%20FX-8350.html

Originally posted by: cirius Hello, I'm interested in the official information about the AMD processor temperatures Vishera (FX).

 

What is the maximum allowable temperature of processor cores, where it can be read in the documentation.

 

 

 



-------------------------

CPU: AMD FX-8350 (black edition FD8350FRHKBOOX) + Cooler Master Hyper 212 X Army (push/pull config. fans Enermax T.B.Silence UCTB12P) / MOBO: Asus M5A99FX Pro2.0 / GPU: Gigabyte Amd Radeon R9 279x ( GV-R927XOC-2GD ) / RAM: Kingston HyperX 2x4GB DDR3 1600Mhz / SSD: Samsung Evo 840 250Gb / Case: Coolermaster K280 / PSU: Chieftec Smart Series GPS-600A8

 04/02/2014 10:33 AM
User is offline View Users Profile Print this message

Author Icon
AMDforMe
Farming Materials

Posts: 600
Joined: 09/08/2013

According to AMD engineering the official FX-8000 series max 24/7 core temp is 61.1C. You should have no issues at this or lower temps. IME you can start to get system freezes in the mid 60's on the FX-8000 series when running beyond the recommended max 24/7 core temp. Be advised that some lesser numer of core FX processors may have a max 24/7 core temp as high as 70C.

It's important to understand that "CPU temp" is NOT core temp. Core temp as reported by the applet Core Temp and by some other software using names other than "core temp" is the only temp that matters. CPU temp is typically the CPU socket thermister that often runs 10C-25C higher than the core temp.

Unfortunately AMD has failed it's customers by NOT providing the max 24/7 CPU temp online in at their website. You essentially have to drag basic tech info. from AMD engineering over the course of months of e-mails...



-------------------------

Building a reliable PC involves more than just assembling the parts. You need to be able to configure all of the BIOS settings appropriately. This can be quite involved and frustrating as it can require a lot of trial and error with stress testing. It is however often the only means to get a 100% reliable PC.

 04/02/2014 11:37 AM
User is offline View Users Profile Print this message

Author Icon
cirius
Peon

Posts: 3
Joined: 04/02/2014

CPU temperature, you can use the proprietary utility from AMD - AMD OverDrive, you need to upgrade to the latest version:

http://sites.amd.com/us/game/downloads/amd-overdrive/Pages/overview.aspx

In the CPU Status has temperature monitoring, it is not only shows the current temperature and the heat supply temperature - Thermal Margin. At the temperature of the processor value will decrease, while clearly seen how much is left to the utmost degree.

http://i33.fastpic.ru/big/2014/0402/9a/86d773abd5c496dac1ba470f0c19ac9a.jpg

 04/02/2014 02:02 PM
User is offline View Users Profile Print this message

Author Icon
AMDforMe
Farming Materials

Posts: 600
Joined: 09/08/2013

AMD engineering has confirmed that prior versions of AOD, Core Temp, HWMonitor, etc. CPU temp readouts are only accurate in the 40C-70C range and that only the CPU core temps are of real value.

Unfortunatley with the latest version of AOD, AMD is now suggesting that PC enthusiasts use "thermal temp margin". The temp thermal margin is not always 100% accurate so you're better off to monitor core temps, IMO. It would appear that AMD doesn't want independent software makers to be able to provide 100% accurate CPU core temps over the full operating range - for some unknown reason.

As long as your CPU is below the 61.1C 24/7 max load temp on the FX-8000 series, the CPU should function just fine. Don't confuse core temps and CPU temp or other temps that are not actually core temp.



-------------------------

Building a reliable PC involves more than just assembling the parts. You need to be able to configure all of the BIOS settings appropriately. This can be quite involved and frustrating as it can require a lot of trial and error with stress testing. It is however often the only means to get a 100% reliable PC.



Edited: 04/02/2014 at 03:52 PM by AMDforMe
 04/10/2014 11:39 PM
User is offline View Users Profile Print this message

Author Icon
cirius
Peon

Posts: 3
Joined: 04/02/2014

I am interested to learn when protection starts at a temperature of processor cores or processor cover (sensor under processor). From what temperature begins defense - 70??

 04/11/2014 10:41 AM
User is offline View Users Profile Print this message

Author Icon
AMDforMe
Farming Materials

Posts: 600
Joined: 09/08/2013

When the FX-8000 series CPUs reach 70C the vcore voltage and frequency drop for a few seconds to cool the CPU then it resumes it's normal operation. It keeps cycling back and forth if need be to try and prevent the CPU from burning up. If the overheating is so much that the CPU internal temp continues to climb the CPU will completely shut down. Some folks report this to occur at ~75C on the FX-8000 series. Other model FX CPUs may use higher thermal limits.

None of this information is published on the AMD website for consumers so it has to be derived from actual tests or personal experience.



-------------------------

Building a reliable PC involves more than just assembling the parts. You need to be able to configure all of the BIOS settings appropriately. This can be quite involved and frustrating as it can require a lot of trial and error with stress testing. It is however often the only means to get a 100% reliable PC.

 04/11/2014 10:58 AM
User is online View Users Profile Print this message

Author Icon
black_zion
80 Column Mind

Posts: 12332
Joined: 04/17/2008

Keeping it under 60°C should be your goal, and is easily possible with aftermarket cooling, especially closed loop liquid coolers. AMDforMe will now make his standard copy and paste "DON'T USE LIQUID COOLING OR YOU WILL DESTROY YOUR ENTIRE SYSTEM!!!!!!" post, but you can ignore it. I suggest using AIDA (formerly Everest) to monitor temperatures and voltages.

-------------------------
ASUS Sabertooth 990FX/Gen3 R2, FX-8350 w/ Corsair H60, 8 GiB G.SKILL RipjawsX DDR3-2133, XFX HD 7970 Ghz, 512GB Vertex 4, 256GB Vector, 240GB Agility 3, Creative X-Fi Titanium w/ Creative Gigaworks S750, SeaSonic X750, HP ZR2440w, Win 7 Ultimate x64
 04/11/2014 08:08 PM
User is offline View Users Profile Print this message

Author Icon
AMDforMe
Farming Materials

Posts: 600
Joined: 09/08/2013

You should stop with the H2O comments as you constantly hawk the totally inferior Corsair H60. A Coolermaster Hyper 212 Evo costs 2/3'rds the price of an H60 and significantly out-performs the H60. A HSF can never leak water to destroy your PC like a Closed Loop Cool (CLC), or other H20 cooler can.  

You've demonstrated time and time again in multiple threads that you lack the technical knowledge to understand the details of CPU cooler testing and the results, especially when you post results for Intel CPUs that are different from AMD CPUs.

I not only explain the water-leak liabilities and cooling deficiencies of the H2O coolers and provide accurate test data links to support my comments, I advise people to technically educate themselves and then Buy What Makes Them Happy. The facts don't lie. Some fanbois just can't deal with reality regarding H20 cooling. An educated consumer knows the risks and inferiority of the closed loop coolers before they make a purchase. Those who don't perform due diligence end up learning the hard way.



-------------------------

Building a reliable PC involves more than just assembling the parts. You need to be able to configure all of the BIOS settings appropriately. This can be quite involved and frustrating as it can require a lot of trial and error with stress testing. It is however often the only means to get a 100% reliable PC.



Edited: 04/11/2014 at 08:22 PM by AMDforMe
 04/11/2014 11:56 PM
User is offline View Users Profile Print this message

Author Icon
QB the Slayer
Master Looter

Posts: 325
Joined: 11/27/2012

You should stop with the H2O comments as you constantly hawk fearmongering

 

QB



-------------------------

The MONSTER HTPC:

CPU: AMD FX-8350.||.Cooler: Corsair H80i
MB: Gigabyte 990FXA-UD7.||.RAM: 8 GB Mushkin Blackline DDR3 2000MHz (7-10-8-27-1T)
Case: CoolerMaster HAF 932.||.PSU: Corsair HX750
GPU:Asus R9 270X DirectCU II TOP.||.Audio: Creative X-Fi Titanium Fatal1ty Pro w/ Logitech Z-5300e (5.1, 280W-RMS)
System Drive: 2xSamsung 840 Pro 128GB RAID0.||.Working Drive: 2xMushkin Chronos 60GB RAID0

 04/12/2014 12:10 AM
User is online View Users Profile Print this message

Author Icon
black_zion
80 Column Mind

Posts: 12332
Joined: 04/17/2008

And there's that post. So now that that's out of the way, you would be well advised to go liquid when overclocking a FX-8350, as AMD is not exactly top trumps in thermal efficiency. AMDforMe is completely against all forms of liquid cooling. I, on the other hand, have used both air and water cooling. A Xigmatek HDT S-1283 (which performs within 1.4°C of the CM Hyper 212 Evo using the stock low RPM low hydrostatic pressure fan on the Frostytech review AMDforMe loves to point to even though it is 2 years old and not representative of today's liquid coolers), with a jet turbine capable of burning out your exhaust fans (also known as a Delta AFB1212GHE-CF00, it has enough power that at full tilt your exhaust fans will spin backwards) with an overclocked and overvolted Phenom II x4 965BE C3 in an Antec 1200. When I moved to a Corsair H60 with dual Cougar CF-V12HP 120 R fans in push pull, I experienced a nice temperature drop, not even hitting 55°C under normal operation. TIM was IC Diamond 24 Karat. Another thing AMDforMe will always fail to mention is that Corsair warranties all system components against damage caused by a coolant leak. The reason I chose the Corsair H60 was at the time it was the only model with a clip on AMD style mounting system, whereas most new models when used with AMD processors will not require a backplate change.

-------------------------
ASUS Sabertooth 990FX/Gen3 R2, FX-8350 w/ Corsair H60, 8 GiB G.SKILL RipjawsX DDR3-2133, XFX HD 7970 Ghz, 512GB Vertex 4, 256GB Vector, 240GB Agility 3, Creative X-Fi Titanium w/ Creative Gigaworks S750, SeaSonic X750, HP ZR2440w, Win 7 Ultimate x64
 04/12/2014 11:13 AM
User is offline View Users Profile Print this message

Author Icon
AMDforMe
Farming Materials

Posts: 600
Joined: 09/08/2013

No guys, no fear mongering - just honest, accurate, factual information that the H2O fanbois can't handle, i.e. reality.

Deal with it.

People are free to read all of the information provided and decide for themselves if they want a water leak liability and/or inferior cooling via CLCs or not. I give people the facts not the fanbois and marketing hype.

Few people with developed reasoning skills would use an inferior H2O cooling system in their PC that introduces a very real water leak liability that can and HAS caused PC hardware to be fried via short circuit.

Those who can't understand technical cooling test data on HSFs and H2O coolers are not qualified to be making recommendations on what coolers people should use.

Hating on the messenger and the message does not change reality. That is precisely why I suggest that PC enthusiasts technically educate themselves and then buy whatever makes them happy, unlike H2O fanbois who hawk inferior CLC coolers - because they are in deep denial over the technical truth.



-------------------------

Building a reliable PC involves more than just assembling the parts. You need to be able to configure all of the BIOS settings appropriately. This can be quite involved and frustrating as it can require a lot of trial and error with stress testing. It is however often the only means to get a 100% reliable PC.

 05/01/2014 12:47 PM
User is offline View Users Profile Print this message

Author Icon
madcratebuilder
Peon

Posts: 4
Joined: 05/01/2014

Originally posted by: AMDforMe No guys, no fear mongering - just honest, accurate, factual information that the H2O fanbois can't handle, i.e. reality.

 

Deal with it.

 

People are free to read all of the information provided and decide for themselves if they want a water leak liability and/or inferior cooling via CLCs or not. I give people the facts not the fanbois and marketing hype.

 

Few people with developed reasoning skills would use an inferior H2O cooling system in their PC that introduces a very real water leak liability that can and HAS caused PC hardware to be fried via short circuit.

 

Those who can't understand technical cooling test data on HSFs and H2O coolers are not qualified to be making recommendations on what coolers people should use.

 

Hating on the messenger and the message does not change reality. That is precisely why I suggest that PC enthusiasts technically educate themselves and then buy whatever makes them happy, unlike H2O fanbois who hawk inferior CLC coolers - because they are in deep denial over the technical truth.

 

 

Comparing the number of AIO h2o coolers sold and the number that leak from other than user error, I think you'll find a number under .1%.  If leaks were a real issue would AMD ship CPU’s with a AIO included?

A person of average skill can install a AIO without issue or even assemble a custom loop.  Just apply common sense.

H2O cooling with homemade aquarium parts has been around for over 20 years now and AIO's for over 6 years.  Saying they all leak is a disservice to the community

 

 



-------------------------

Speedbird: FX9590@5.2 CHVF-Z 8gb G Skill@2133 RAID0 SSD's RAID0 Raptors Crossfired R9 280X's Full EK loop dual D5's AQ6 Pro AX1200i


Goonybird: FX8350@4.6 GA990FXZ-UD3R3 16gb Corsair 1866 SSD HDD Sapphire 7970 OC CM Glacer 240L w/res Seasonic 850 Gold

 05/01/2014 11:26 PM
User is offline View Users Profile Print this message

Author Icon
AMDforMe
Farming Materials

Posts: 600
Joined: 09/08/2013

No one said they all leak but most do eventually. It only takes ONE leak to damage PC hardware and pretending this doesn't happen all the time is disingenuous and technically illiterate. In addition your laughable .1% is typical hero worship as Corsair refuses to even disclose their failure rates for obvious reasons...

Introducing an inescapable water leak liability into a PC is technically ignorant when it's unnecessary and there are hundreds of HSFs that cool as well or better and cost less. If you have no clue, you should keep quiet.



-------------------------

Building a reliable PC involves more than just assembling the parts. You need to be able to configure all of the BIOS settings appropriately. This can be quite involved and frustrating as it can require a lot of trial and error with stress testing. It is however often the only means to get a 100% reliable PC.

 05/02/2014 12:16 AM
User is offline View Users Profile Print this message

Author Icon
QB the Slayer
Master Looter

Posts: 325
Joined: 11/27/2012

"but most do eventually"...  "inescapable water leak"... and where did you pull these "facts" from?  I think you are the one who has no clue and should keep quiet...  post some facts or please STFU!

 

QB



-------------------------

The MONSTER HTPC:

CPU: AMD FX-8350.||.Cooler: Corsair H80i
MB: Gigabyte 990FXA-UD7.||.RAM: 8 GB Mushkin Blackline DDR3 2000MHz (7-10-8-27-1T)
Case: CoolerMaster HAF 932.||.PSU: Corsair HX750
GPU:Asus R9 270X DirectCU II TOP.||.Audio: Creative X-Fi Titanium Fatal1ty Pro w/ Logitech Z-5300e (5.1, 280W-RMS)
System Drive: 2xSamsung 840 Pro 128GB RAID0.||.Working Drive: 2xMushkin Chronos 60GB RAID0

AMD Support and Game » AMD Processors (CPU) » FX-8350 Overclocking

1 2 Next Last unread
Topic Tools Topic Tools
Statistics
84687 users are registered to the AMD Support and Game forum.
There are currently 4 users logged in.

FuseTalk Hosting Executive Plan v3.2 - © 1999-2014 FuseTalk Inc. All rights reserved.