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Thread: Processor speed keeps dropping when not in use.




  1. #1
    Join Date
    May 2009
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    1

    Default Processor speed keeps dropping when not in use.

    I can't seem to find the setting in the Bios to make it stop. Anyone? I have it oc'ed from 2.6 to 3.2. Whenever the processor isn't in use it falls to 2.4. Where can i turn this off?

    Specs:
    GA EP45C-DS3R
    Q9400
    2x2 ddr2 800 gig corsair ram
    9800GTX+
    750W PSU
    Last edited by nickcib01; 05-14-2009 at 03:48 AM.

  2. #2

    Default Re: Processor speed keeps dropping when not in use.

    I think the processor drops the multiplier to 6 whenever it is idle. Less power, less heat, longer life.

    Why do you want to prevent that?

  3. #3
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    Default Re: Processor speed keeps dropping when not in use.

    I believe this is a feature on all energy saver boards.

    It doesn't really drop performance, but reduces power usage, reduces heat and extends component life.
    Gigabyte GA-965P-DS3
    Intel E6400 @ 3.2GHz
    Kingston 1GB x 4 PC5300 @ 800MHz
    Zotac 8800GT AMP! @ 770MHz

  4. #4
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    Default Re: Processor speed keeps dropping when not in use.

    Quote Originally Posted by nickcib01 View Post
    I can't seem to find the setting in the Bios to make it stop. Anyone? I have it oc'ed from 2.6 to 3.2. Whenever the processor isn't in use it falls to 2.4. Where can i turn this off?

    Specs:
    GA EP45C-DS3R
    Q9400
    2x2 ddr2 800 gig corsair ram
    9800GTX+
    750W PSU
    Caused by Intel's CPU "speedstep" function. Disable mobo bios "CPU EIST" option to stop it happening?

    ;)
    Last edited by jimmor; 05-14-2009 at 08:26 AM.
    The more I know, the more I know I don't know...

  5. #5
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    Default Re: Processor speed keeps dropping when not in use.

    As others have already said, there is no need to disable this feature.

    As soon as the CPU is loaded, the multiplier will kick back up to whatever you have it set in the BIOS. Speedstep will save you money on your power bill, and help prolong the life of your CPU, due to it idling at lower temperatures, and alowing the processor to cool more rapidly after loading has stopped.
    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

  6. #6
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    Default Re: Processor speed keeps dropping when not in use.

    As stated above disabling the setting "CPU EIST" and "C1E" I think its called in the BIOS will stop it from doing it. The only real benifit is saving power.
    Lian Li PC-7F Chassis Black
    Gigabyte GA-X48-DS5 MB (Rev. 1.1 BIOS v.F8c)
    Gigabyte ODIN GT 800Watt PSU
    Intel Core2Quad Q9550 E0 @ 3.4Ghz @ 1.25vcore
    Noctua NH-U12P + AS5
    G.Skill 2X2GB F2-8500CL5D-4GBPK
    2 X ATI Radeon HD4850 512MB (Crossfired)
    Dell Ultrasharp 2209WA IPS
    2 X 1TB Seagate 7200.11 in RAID 1
    Pioneer DVR216 SATA DVD MultiDrive
    Windows 7 Ultimate X64 RC1 (Build 7232)
    ------------------------------------------------
    Gigabyte Poseidon Chassis
    Gigabyte GA-EP45-DS3 (Rev. 1.0 BIOS v.F9)
    ASUS Artic Square CPU Cooling with AS5
    Thermaltake TR2 RX 550Watt PSU
    Intel Core2Duo E8500 E0 @ 3.8Ghz @ 1.25vcore
    Corsair 2 X 2Gb XMS2 PC6400C5 DDR2
    NVIDIA GeForce 8800GT 512MB
    1 X Seagate 1TB 7200.12 + Seagate 750GB 7211.11
    Sony SATA DVD MultiDrive
    Windows 7 Ultimate X64 RC1 (Build 7232)
    ------------------------------------------------

  7. #7
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    Default Re: Processor speed keeps dropping when not in use.

    The only real benefit is not saving power. Speed step increases the CPU temperature delta. Ie the difference from full load temps to idle temps.

    For example, if you have SS off, when you cut the load on a CPU running 3GHz at 100%, temperatures will drop much more slowly than if SS was able to drop its speed to 2GHz. At 2GHz they would also drop lower.

    It's a useful feature, and shouldn't be disabled. It's actually alot more overclock friendly than Cool-And-Quiet, it won't mess with vCore if it detects modified processor settings.

    Why would you want to use more power and create more heat than you have to? Current economic climate is grim, so every penny counts.
    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
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    Default Re: Processor speed keeps dropping when not in use.

    Yes the obvious as well. I only made the comment because it has been widely documented that on an overclocked system, Speed Step muckin with your Multi and what not is not a good way to get a stable overclocked system. Some people it does work "ok".
    Lian Li PC-7F Chassis Black
    Gigabyte GA-X48-DS5 MB (Rev. 1.1 BIOS v.F8c)
    Gigabyte ODIN GT 800Watt PSU
    Intel Core2Quad Q9550 E0 @ 3.4Ghz @ 1.25vcore
    Noctua NH-U12P + AS5
    G.Skill 2X2GB F2-8500CL5D-4GBPK
    2 X ATI Radeon HD4850 512MB (Crossfired)
    Dell Ultrasharp 2209WA IPS
    2 X 1TB Seagate 7200.11 in RAID 1
    Pioneer DVR216 SATA DVD MultiDrive
    Windows 7 Ultimate X64 RC1 (Build 7232)
    ------------------------------------------------
    Gigabyte Poseidon Chassis
    Gigabyte GA-EP45-DS3 (Rev. 1.0 BIOS v.F9)
    ASUS Artic Square CPU Cooling with AS5
    Thermaltake TR2 RX 550Watt PSU
    Intel Core2Duo E8500 E0 @ 3.8Ghz @ 1.25vcore
    Corsair 2 X 2Gb XMS2 PC6400C5 DDR2
    NVIDIA GeForce 8800GT 512MB
    1 X Seagate 1TB 7200.12 + Seagate 750GB 7211.11
    Sony SATA DVD MultiDrive
    Windows 7 Ultimate X64 RC1 (Build 7232)
    ------------------------------------------------

  9. #9

    Default Re: Processor speed keeps dropping when not in use.

    Its actually a very good feature to leave enabled.
    Asus P8Z68-V PRO/GEN3 bios 3202
    2500k@4.7GHZ.
    CM Hyper 212 EVO blademasters push-pull
    8GB's Samsung 30nm tech ram 1.35v
    EVGA GTX 460 superclocked plus (part# 1G-P3-1372-TR)
    Seasonic X660
    Canada

  10. #10
    Join Date
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    Australia
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    Default Re: Processor speed keeps dropping when not in use.

    If your overclock is not effected by it then by all means leave it on. I dont turn my computer on to leave it sitting idle. Its either Gaming or encoding so doesnt make a damm bit of differents to me. Burn the Tree's I say.
    Lian Li PC-7F Chassis Black
    Gigabyte GA-X48-DS5 MB (Rev. 1.1 BIOS v.F8c)
    Gigabyte ODIN GT 800Watt PSU
    Intel Core2Quad Q9550 E0 @ 3.4Ghz @ 1.25vcore
    Noctua NH-U12P + AS5
    G.Skill 2X2GB F2-8500CL5D-4GBPK
    2 X ATI Radeon HD4850 512MB (Crossfired)
    Dell Ultrasharp 2209WA IPS
    2 X 1TB Seagate 7200.11 in RAID 1
    Pioneer DVR216 SATA DVD MultiDrive
    Windows 7 Ultimate X64 RC1 (Build 7232)
    ------------------------------------------------
    Gigabyte Poseidon Chassis
    Gigabyte GA-EP45-DS3 (Rev. 1.0 BIOS v.F9)
    ASUS Artic Square CPU Cooling with AS5
    Thermaltake TR2 RX 550Watt PSU
    Intel Core2Duo E8500 E0 @ 3.8Ghz @ 1.25vcore
    Corsair 2 X 2Gb XMS2 PC6400C5 DDR2
    NVIDIA GeForce 8800GT 512MB
    1 X Seagate 1TB 7200.12 + Seagate 750GB 7211.11
    Sony SATA DVD MultiDrive
    Windows 7 Ultimate X64 RC1 (Build 7232)
    ------------------------------------------------

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