Another E8400 Temp question
So i have my new E8400 in my system in an antec 900 with a zalman 9700 fan. i oced it to 3.6 with stock voltage. temps are around 29c idle, and 62c load. it seems rather high doesnt it? im using speed fan with vista x64. mobo is gigabyte x38 DS4
makotech222, to which temperatures are you referring; Tcase (CPU temp) or Tjunction (Core temp)? Please read the Core 2 Quad and Duo Temperature Guide - http://www.tomshardware.com/forum/221745-29-core-quad-temperature-guide
From the Guide:
Section 1: Introduction
Intel provides separate thermal specifications for 2 different sensor types; a CPU Case (not computer case) Thermal Diode located within the CPU die between the Cores, and Digital Thermal Sensors located within each Core. The Case Thermal Diode measures Tcase (Temperature Case), which is CPU temp, and the Digital Thermal Sensors measure Tjunction (Temperature Junction), which is Core temp. Since these sensors measure 2 distinct thermal levels, there is a constant temperature difference between them, which is Tcase to Junction Delta. C2Q`s have 1 Tcase and 4 Junction sensors, while C2D`s have 1 Tcase and 2 Junction sensors.
Intel does not provide information comparing Tcase and Junction specifications. Consequently, there is much confusion among users regarding temperature monitoring, software utilities, test methods, Calibrations and Offsets, so Results can be difficult to decipher and compare. When listing Idle & Load test Results, it's also necessary to list the Variables as shown below:
Tcase = Idle & Load
Tjunction = Idle & Load, hottest Core
Ambient = Room Temp
Chipset = Model
C2Q / C2D = Model
CPU Cooler = Model
Frequency = CPU Clock
Load = Test Program
Motherboard = Model
Stepping = Revision
Vcore = CPU Voltage
Also from the Guide:
Section 6: Scale
Scale 2: Duo
E8x00: Tcase Max 72c, C0 Stepping, Tjunction Max 105c, Vcore Default 1.250, TDP 65w, Delta 15c
E8x90: Tcase Max 72c, C0 Stepping, Tjunction Max 105c, Vcore Default 1.250, TDP 65w, Delta 15c
As you can see, it's important to be specific, otherwise the temperature topic is reduced to nothing more than apples and oranges thermal fruit salad.
randomizer, additional information from the Guide:
Section 15: Troubleshooting
Notice: A significant percentage of 45 nanometer processors are being reported with defective DTS sensors, which can be characterized as displaying unresponsive Core temperatures, particularly at lower Scale. Also being reported are excessive Offsets between Cores of as much as 8c. These issues apply to E8000, Q9000 and QX9000 series processors.
(B) Offsets between Cores of up to 5c for Quad`s and 3c for Duo`s are normal.
Use Everest Ultimate trial. Works fine on my Vista 64 system.