Please report all spam threads, posts and suspicious members. We receive spam notifications and will take immediate action!
Page 1 of 2 12 LastLast
Results 1 to 10 of 19

Thread: CPU Temps - Is Anything "Normal?"




  1. #1
    Join Date
    Sep 2009
    Posts
    35

    Default CPU Temps - Is Anything "Normal?"

    I am trying to decide if my cooling is good enough, or if I still have work to do.

    This new build is in its early stages, and I don't have a lot of data to work with, but I can report the following:

    1. I installed the stock cooler using only the provided thermal interface pad. Idle was 39C. I ran OCCT and after an hour had peak temps of 59C on Core 1 and 54C on Core 2. All results obtained using Core Temp 0.99.5.

    2. I replaced the stock cooler with a Zalman 9700. I used Arctic Cooling MX-2 as the interface. Idle remained at 39C, but the OCCT numbers dropped to 51C and 46C, respectively, an eight degree improvement.

    A few things confuse me here:

    A. Is the 39C idle temp too high? Ambient room temps are in the low 20s.

    B. Is it normal to get an eight degree improvement under load but no improvement at all at idle?

    C. Is there any such thing as a "normal" temperature, or are temps likely to vary between otherwise identical systems due to the quality of the temp sensor on the board? Is there a good way to install an external temperature monitor without putting something between the CPU and the cooler?

    D. Finally, what is up with the five degree difference in peak temps between the two cores? I get the same difference with the stock and Zalman coolers.
    MOBO - GIGABYTE GA-EP45-UD3P v1.6, FB Bios
    RAM - G.SKILL(2 x 2GB) DDR2 1066 (F2-8500CL5D)
    CPU - Intel Core 2 Duo E8500 Wolfdale 3.16GHz (currently at 450 x 9 w/ ~31C Idle and 60C @ Full Load) - Zalman 9700 cooler
    GPU - GIGABYTE GV-R485OC-1GH Radeon HD (no OC) Zalman VF2000 cooler (27C idle)
    HDs - OCZ 60G SSD boot drive - WD Caviar Black - WDC WD1001FALS-00J7B1 - 1 TB; Maxtor 6L200S0 (200G) (Both SATA)
    DVD-ROMs - Plextor PX-880SA - (SATA Burners)(2)
    Sound - Omega HT Claro via Monsoon Speakers
    PSU - CORSAIR CMPSU-520HX 520W
    CASE - Antec 300 (Scythe Fans)
    Windows 7 64bit - Home Premium

  2. #2
    Chike is offline Senior Member
    Join Date
    Jun 2009
    Location
    Israel
    Posts
    6,531

    Default Re: CPU Temps - Is Anything "Normal?"

    Your temps looks fine to me, at the same clock and 29c ambiant I get 57c.
    Idle temperatures are not important, any core temp under 50c is considered under 50c the DTS sensore are most inaccurate at low temperature, and sometimes get stuck at a certain temperature they would not go below.
    The DTS is not very accurate at higher temperatures either +-5c, to get more accurate and close to the actual readout you will need to calibrate them.

  3. #3
    Join Date
    Sep 2009
    Posts
    35

    Default Re: CPU Temps - Is Anything "Normal?"

    Thanks for the reply. How do I calibrate them?
    MOBO - GIGABYTE GA-EP45-UD3P v1.6, FB Bios
    RAM - G.SKILL(2 x 2GB) DDR2 1066 (F2-8500CL5D)
    CPU - Intel Core 2 Duo E8500 Wolfdale 3.16GHz (currently at 450 x 9 w/ ~31C Idle and 60C @ Full Load) - Zalman 9700 cooler
    GPU - GIGABYTE GV-R485OC-1GH Radeon HD (no OC) Zalman VF2000 cooler (27C idle)
    HDs - OCZ 60G SSD boot drive - WD Caviar Black - WDC WD1001FALS-00J7B1 - 1 TB; Maxtor 6L200S0 (200G) (Both SATA)
    DVD-ROMs - Plextor PX-880SA - (SATA Burners)(2)
    Sound - Omega HT Claro via Monsoon Speakers
    PSU - CORSAIR CMPSU-520HX 520W
    CASE - Antec 300 (Scythe Fans)
    Windows 7 64bit - Home Premium

  4. #4
    Acebmxer's Avatar
    Acebmxer is offline Gigabyte Elite
    Join Date
    May 2009
    Location
    New Jersey, United States
    Posts
    2,817

    Default Re: CPU Temps - Is Anything "Normal?"

    its a long read but tells you everything you need to know.techpowerup.com/realtemp/docs.php
    Main Rig
    Gigabyte z87x-OC
    Haswell i7 4770k - 4.7Ghz @ 1.330v LLC Extreme (L310B492)
    G.Skill F3-1700CL9D-8GBXM DDR3-2133mhz 9-11-10-28 1.65v @ 2800mhz 12-14-14-35 1.7v
    Samsung Green 8GB 2x4GB MV-3V4G3D/US DDR3 1.3v 30nn @ 2200Mhz 11-11-11-32 1.60v
    Sapphire ATI HD 7970 3GB clocked 1200MHz @ 1.181v.
    HiS ATI HD 6950
    Samsung 840 Pro 256GB SSD (boot Drive) on Intel sata3 controller port0
    Corsair Force GT 120 GB Sata3 SSD on Intel sata3 controller port1
    Samsung 320GB HD322GJ 7200 RPM 16M cache on Intel sata3 controller port2
    Sony Optiarc DVD-RW AD-7240S on Intel sata3 controller port5
    CORSAIR CMPSU-850TX PSU
    Swiftech MCP655-B Pump
    EK Supremacy Cpu Block
    Swiftech Mcres Micro Rev 2 Reservoir
    Black Ice GTX Xtreme 360 Radiator





  5. #5
    Chike is offline Senior Member
    Join Date
    Jun 2009
    Location
    Israel
    Posts
    6,531

    Default Re: CPU Temps - Is Anything "Normal?"


  6. #6
    Join Date
    Sep 2009
    Posts
    35

    Default Re: CPU Temps - Is Anything "Normal?"

    Wow. I've long known that temperature readouts could be wildly unreliable, but I had no idea the problem was curable. It looks like my sensors are stuck and will not drop below 39C, but that with enough work I can get something resembling real numbers from them after all.

    Thanks for some highly informative replies.
    MOBO - GIGABYTE GA-EP45-UD3P v1.6, FB Bios
    RAM - G.SKILL(2 x 2GB) DDR2 1066 (F2-8500CL5D)
    CPU - Intel Core 2 Duo E8500 Wolfdale 3.16GHz (currently at 450 x 9 w/ ~31C Idle and 60C @ Full Load) - Zalman 9700 cooler
    GPU - GIGABYTE GV-R485OC-1GH Radeon HD (no OC) Zalman VF2000 cooler (27C idle)
    HDs - OCZ 60G SSD boot drive - WD Caviar Black - WDC WD1001FALS-00J7B1 - 1 TB; Maxtor 6L200S0 (200G) (Both SATA)
    DVD-ROMs - Plextor PX-880SA - (SATA Burners)(2)
    Sound - Omega HT Claro via Monsoon Speakers
    PSU - CORSAIR CMPSU-520HX 520W
    CASE - Antec 300 (Scythe Fans)
    Windows 7 64bit - Home Premium

  7. #7
    Join Date
    Apr 2009
    Location
    J'Habite En Angleterre
    Posts
    2,431

    Default Re: CPU Temps - Is Anything "Normal?"

    If your sensors are stuck at 39c then idle temperature calibration (as detailed in the Toms Hardware link) will be impossible.
    Coolermaster CM 690 II advance Case
    Corsair HX750 (CWT, 91%(80+ Gold rated @230V) single 62A 12V rail
    P55A-UD4 v2.0 @ F14
    Core i5 760 @ 20 x 201, 4.02GHz
    TRUE Black with a single Noctua NF-P12 pumping out 55 CFM @ 19db .
    2 x 2GB Mushkin Ridgeback (996902), @ 7-10-8-27, 2010-DDR, 1.66v
    2 x Gigabyte GTX 460 1024MB in SLI (Pre OC'd to 715MHz core and 1800MHz VRAM) @ 850 Core / 4100 Mem.
    Intel X25-M Boot Drive (OS and Programs) 200MB/s Read & 90MB/s Write
    Corsair X32 200MB/s Read & 100MB/s Write
    WD Caviar Blue 640GB C (Steam, Games, Storage, Temp Files & Folders, etc)
    Samsung F3 500GB Backup/Images
    Noctua 1300RPM 19dB case fan (rear extraction)
    3 x 140 MM Coolermaster LED fans (one front intake, one top extraction, one side intake)
    Dell Ultra Sharp 2209WAf E-IPS @ 1680x1050

  8. #8
    Join Date
    Sep 2009
    Posts
    35

    Default Re: CPU Temps - Is Anything "Normal?"

    Ah, heck. I went through the challenge of reading the whole thing on a cell phone on the subway yesterday, too. I had the impression that the method on techpowerup stuck sensors into account and offered a SpeedFan workaround. Then again, reading something that complex on that small of a screen is not exactly the best way to read with comprehension.

    I am not going to give up just yet, even though I fear you are probably right.
    MOBO - GIGABYTE GA-EP45-UD3P v1.6, FB Bios
    RAM - G.SKILL(2 x 2GB) DDR2 1066 (F2-8500CL5D)
    CPU - Intel Core 2 Duo E8500 Wolfdale 3.16GHz (currently at 450 x 9 w/ ~31C Idle and 60C @ Full Load) - Zalman 9700 cooler
    GPU - GIGABYTE GV-R485OC-1GH Radeon HD (no OC) Zalman VF2000 cooler (27C idle)
    HDs - OCZ 60G SSD boot drive - WD Caviar Black - WDC WD1001FALS-00J7B1 - 1 TB; Maxtor 6L200S0 (200G) (Both SATA)
    DVD-ROMs - Plextor PX-880SA - (SATA Burners)(2)
    Sound - Omega HT Claro via Monsoon Speakers
    PSU - CORSAIR CMPSU-520HX 520W
    CASE - Antec 300 (Scythe Fans)
    Windows 7 64bit - Home Premium

  9. #9
    Chike is offline Senior Member
    Join Date
    Jun 2009
    Location
    Israel
    Posts
    6,531

    Default Re: CPU Temps - Is Anything "Normal?"

    Quote Originally Posted by Psycho101 View Post
    If your sensors are stuck at 39c then idle temperature calibration (as detailed in the Toms Hardware link) will be impossible.
    The idle calibration is done against the diode(mistakenly refered as Tcase) stuck DTSs are not a problem.

  10. #10
    Join Date
    Apr 2009
    Location
    J'Habite En Angleterre
    Posts
    2,431

    Default Re: CPU Temps - Is Anything "Normal?"

    The tech powerup guide involves setting your idle temps via offsets to be what is worked out from your ambient temp (room) plus x degrees c for the method of cooling. Therefore if you can not read true idle temps (due to them being stuck) the method is useless, sadly.

    You can calibrate them at load using the thermal diode that is also on chip though. That method isn't detailed in the article. Here is some useful info for load calibration amongst other things: Sticky: Core i7 and Core 2 Temperature Guide . I strongly recommend that if it is difficult to comprehend (it's not exactly light reading) then you probably don't have a crucial need to calibrate sensors. It will still only give you more accurate load temps. Your idle readings are permanently screwed with stuck sensors.

    ChiKe, Idle temps have zero to do with the diode. Maybe a re-read of the article is needed?

    COOLING...............................IDLE DEGREES ABOVE AMBIENT
    High end water...............................6C above ambient
    High end air (true push/pull) ........6-7C
    High end air (1fan).........................7C
    Mid air (zalman 9500)....................8-9C depending on fan rpm
    Intel stock cooler...........................10-11C

    If your reported temperature is too low then you will need to go into the RealTemp Settings window and use a positive calibration factor to increase your reported temperature. If your CPU is reading too high, you will need to use a negative calibration factor. On a multi-core processor during this test, you should have equal temperatures for all of your cores. Though this calibration test is done when your processor is idle, the calibration settings entered will improve the accuracy of your reported tempertures from idle to TJMax. Return your computer to your normal MHz and core voltage settings and if you need to, you can make some further minor adjustments to equalize your core temperatures at idle. You shouldn't need to make any major adjustments at this point.


    This clearly states you use the offsets in realtemp (RT doesn't even read the diode) to adjust DTS readings using ambient and the above table. Notice the wording of temperatures, and the fact that the only two variables used are ambient and the figure in the table. In no way, shape or form does the diode reading come in to this guide.

    This means that if your ambient is 20c and you're on high end water, it's assumed the current idle temp at the FSB and voltage and multi detailed IS 26. No diode mentioned any where there.... You then procede to adjust the offset with a negative value if cores are above 26c and a positive if below, until you see, for eg a quad "26 - 26 - 26 - 26". If the sensors are stuck, this is pointless.

    Again, for clarity, at no point in the article or the detailed calibration method do you even need to know that the diode exists, it's not an issue.
    Coolermaster CM 690 II advance Case
    Corsair HX750 (CWT, 91%(80+ Gold rated @230V) single 62A 12V rail
    P55A-UD4 v2.0 @ F14
    Core i5 760 @ 20 x 201, 4.02GHz
    TRUE Black with a single Noctua NF-P12 pumping out 55 CFM @ 19db .
    2 x 2GB Mushkin Ridgeback (996902), @ 7-10-8-27, 2010-DDR, 1.66v
    2 x Gigabyte GTX 460 1024MB in SLI (Pre OC'd to 715MHz core and 1800MHz VRAM) @ 850 Core / 4100 Mem.
    Intel X25-M Boot Drive (OS and Programs) 200MB/s Read & 90MB/s Write
    Corsair X32 200MB/s Read & 100MB/s Write
    WD Caviar Blue 640GB C (Steam, Games, Storage, Temp Files & Folders, etc)
    Samsung F3 500GB Backup/Images
    Noctua 1300RPM 19dB case fan (rear extraction)
    3 x 140 MM Coolermaster LED fans (one front intake, one top extraction, one side intake)
    Dell Ultra Sharp 2209WAf E-IPS @ 1680x1050

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •