Overclock.net › Forums › AMD › AMD CPUs › FX-8120 or Phenom II X4 980?
New Posts  All Forums:Forum Nav:

FX-8120 or Phenom II X4 980? - Page 12

post #111 of 124
Quote:
Originally Posted by JNielson View Post

not idle man. thats under load. it can handle a 4.0Ghz OC but you get into some games and its gonna hit that. and really? an H50? first time i ever heard of someone saying something good about closed loops. my buddy had an H80 (i dont remember the model. just that it was corsair). Hose split and fried the whole rig... talk about unlucky. i guess thats why i dont want to use a closed loop. id put more faith into something i put together...

I've had the H50 since Jan 2010 without a single problem. As for temps, you do know that the max recommended temp by AMD is the core temp not the CPU temp read by the motherboard right? (not to mention it's a conservative limit not "cross this temp and your chip spouts flames")
post #112 of 124
I was just going by what you said "it was at idle... basically cuts power immedietly since max temp is 61C!"
post #113 of 124
Quote:
Originally Posted by Bubba Hotepp View Post

I've had the H50 since Jan 2010 without a single problem. As for temps, you do know that the max recommended temp by AMD is the core temp not the CPU temp read by the motherboard right? (not to mention it's a conservative limit not "cross this temp and your chip spouts flames")

I don't know about FX. But Max temp for deneb and thuban is 62c-70c, and AMD call this as Tcase temp. This means CPU's case temp and case means the surface area of CPU's case where thermal paste is applied, it doesn't mean core temp temp. According to AMD Bios and Kernal developer guide, critical temp range starts from 62c and max is 70c. Even At 70c chip will not burn, only CPU is automatically throttled back to lowest safe frequency. (remember this type of throttling command is not executed by VRMs, CPU itself or BIOS do this) That is why they call it CRITICAL. As you can clearly see if Tcase temp reaches to max and there is some distance between core and case surface. We consider max core temp is 75 when Tcase is 70c.
Haswell i3
(18 items)
 
  
CPUMotherboardGraphicsRAM
Core i3-4150 @ 3.5 GHz Asus B85M-G Rev 1.01, Bios: 2501 AMD Radeon HD 7850 ♥ 1GB 2x 4GB DDR3 1600 MHz CL9 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 750 EVO 250GB Seagate Barracuda 1TB 7200.14 Seagate 500 GB 2.5" Samsung DVD/RW 
CoolingOSMonitorKeyboard
Corsair H70 Windows 10 64 bit Samsung A300N 20" 1600 x 900 60Hz 5ms 19Watt PS/2 Microsoft Wired Keyboard 500 
PowerCaseMouse
Corsair TX850 V2 CoolerMaster Elite 430 Black Logitech M170 
  hide details  
Reply
Haswell i3
(18 items)
 
  
CPUMotherboardGraphicsRAM
Core i3-4150 @ 3.5 GHz Asus B85M-G Rev 1.01, Bios: 2501 AMD Radeon HD 7850 ♥ 1GB 2x 4GB DDR3 1600 MHz CL9 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 750 EVO 250GB Seagate Barracuda 1TB 7200.14 Seagate 500 GB 2.5" Samsung DVD/RW 
CoolingOSMonitorKeyboard
Corsair H70 Windows 10 64 bit Samsung A300N 20" 1600 x 900 60Hz 5ms 19Watt PS/2 Microsoft Wired Keyboard 500 
PowerCaseMouse
Corsair TX850 V2 CoolerMaster Elite 430 Black Logitech M170 
  hide details  
Reply
post #114 of 124
Quote:
Originally Posted by sumitlian View Post

I don't know about FX. But Max temp for deneb and thuban is 62c-70c, and AMD call this as Tcase temp. This means CPU's case temp and case means the surface area of CPU's case where thermal paste is applied, it doesn't mean core temp temp. According to AMD Bios and Kernal developer guide, critical temp range starts from 62c and max is 70c. Even At 70c chip will not burn, only CPU is automatically throttled back to lowest safe frequency. (remember this type of throttling command is not executed by VRMs, CPU itself or BIOS do this) That is why they call it CRITICAL. As you can clearly see if Tcase temp reaches to max and there is some distance between core and case surface. We consider max core temp is 75 when Tcase is 70c.

Good to know, I was under the impression the max temp was Tjunction for AMD. Is there info from AMD that gives 100% clarification? (I've had a hard time finding it)
post #115 of 124
redface.gif Many apologize for going off topic, but please let me explain 'Bubba Hotepp'.
Quote:
Originally Posted by Bubba Hotepp View Post

Good to know, I was under the impression the max temp was Tjunction for AMD. Is there info from AMD that gives 100% clarification? (I've had a hard time finding it)

Hey bro ! I really can't give 100% clarification, but I've found some important info relating to Critical temperature.
Please read this first, this has been taken from taken from 'BIOS and Kernal Developer's Guide for AMD Family 10h Processors'.

242


Now read this,
517


And following info has been taken from 'AMD Power and Thermal Datasheet for AMD Family 10h CPUs'.
483


All This information links to that 70c is the critical temperature where CPU will be throttled to lower frequency.
It is yet unknown that Tctl is core temp or Junction (Tjmax) ??

Well.........There is maximum possibility that if Tcase reaches to 62c, it means Tctl is at max (70c) (Because there is some distance between Case and CPU core.)
May be All this means that for AMD CPU we only need to measure the Tcase temp (by some Temperature diode or infrared temp sensor) so that we may know when Tctl would be activated.

Hope this will help you to find and understand more.thumb.gif


Here is the link for 'Power and Thermal Datasheet for AMD Family 10h CPU':
http://www.google.co.in/url?sa=t&rct=j&q=amd+power+and+thermal+datasheet+for+family+10h&source=web&cd=1&ved=0CFIQFjAA&url=http%3A%2F%2Fsupport.amd.com%2Fus%2FProcessor_TechDocs%2F43375.pdf&ei=zD2kT47KMYTtrQegveXRAQ&usg=AFQjCNGtiFZDRXwRm9IsiVWakReWlyh1yA&cad=rja

and for 'BIOS and Kernal developer's guide for AMD Family 10h CPU':
http://www.google.co.in/url?sa=t&rct=j&q=bios+and+kernel+developer%E2%80%99s+guide+31116&source=web&cd=1&ved=0CFAQFjAA&url=http%3A%2F%2Fwr0.wr.inf.h-brs.de%2Fwr%2Fhardware%2Fnodes1%2Famd%2FBKDG.pdf&ei=ZD6kT8vbNo3NrQfHztzqAQ&usg=AFQjCNG861l9oGt0VaJeBJksaIphzHVeQQ&cad=rja
Edited by sumitlian - 5/4/12 at 1:47pm
Haswell i3
(18 items)
 
  
CPUMotherboardGraphicsRAM
Core i3-4150 @ 3.5 GHz Asus B85M-G Rev 1.01, Bios: 2501 AMD Radeon HD 7850 ♥ 1GB 2x 4GB DDR3 1600 MHz CL9 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 750 EVO 250GB Seagate Barracuda 1TB 7200.14 Seagate 500 GB 2.5" Samsung DVD/RW 
CoolingOSMonitorKeyboard
Corsair H70 Windows 10 64 bit Samsung A300N 20" 1600 x 900 60Hz 5ms 19Watt PS/2 Microsoft Wired Keyboard 500 
PowerCaseMouse
Corsair TX850 V2 CoolerMaster Elite 430 Black Logitech M170 
  hide details  
Reply
Haswell i3
(18 items)
 
  
CPUMotherboardGraphicsRAM
Core i3-4150 @ 3.5 GHz Asus B85M-G Rev 1.01, Bios: 2501 AMD Radeon HD 7850 ♥ 1GB 2x 4GB DDR3 1600 MHz CL9 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 750 EVO 250GB Seagate Barracuda 1TB 7200.14 Seagate 500 GB 2.5" Samsung DVD/RW 
CoolingOSMonitorKeyboard
Corsair H70 Windows 10 64 bit Samsung A300N 20" 1600 x 900 60Hz 5ms 19Watt PS/2 Microsoft Wired Keyboard 500 
PowerCaseMouse
Corsair TX850 V2 CoolerMaster Elite 430 Black Logitech M170 
  hide details  
Reply
post #116 of 124
I love my 955. I have it OC'd to 3.6 currently. I feel no reason to upgrade to BD. This CPU performs fine. Go 980 imo. Great stock clocks.

Sent from my DROIDX
post #117 of 124
Quote:
Originally Posted by sumitlian View Post

redface.gif Many apologize for going off topic, but please let me explain 'Bubba Hotepp'.
Hey bro ! I really can't give 100% clarification, but I've found some important info relating to Critical temperature.
Well.........There is maximum possibility that if Tcase reaches to 62c, it means Tctl is at max (70c) (Because there is some distance between Case and CPU core.)
May be All this means that for AMD CPU we only need to measure the Tcase temp (by some Temperature diode or infrared temp sensor) so that we may know when Tctl would be activated.
Hope this will help you to find and understand more.thumb.gif

Typical engineers....they have to turn something simple into cloudy and ambiguous doh.gif I wish they would just put in there "processor should not exceed tcase or tjunction whichever it is. lol
post #118 of 124
via opencl?i doubt any tested!
post #119 of 124
temperature? good old infrared car gun for turbo temperature
post #120 of 124
Its a 700 watt ceramic psu

This is my new prototype for mid range pcs, This build (ram case psu 2xhdds video card mobo and power supply was a cost of 780 bucks)

Its by no means set up for gaming its basically my version of a home computer for the average user lol

Its not tweaked for gaming just web browsing movies light gaming etc. I dropped it down to 4.2 to ensure thermal protection, I think the next one I will include a better cooler.

sad people still shop with dell and hp in walmart with the garbage they distribute at my prices
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD CPUs
Overclock.net › Forums › AMD › AMD CPUs › FX-8120 or Phenom II X4 980?