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| Intel Motherboards & CPUs Questions or comments on INTEL products? |
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6th January, 2005, 10:24 PM
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| Celeron D Underclocking I'm putting a media pc together based around a Celeron D 320 and the plan is to underclock it on a 100mhz fsb to 1.8ghz to help cool it I've read the datasheets on it and I know I need to change BSEL0 (pin AD6) from high to low. Am I right in concluding to do this I need to insulate the pin or do I need to short it to a ground pin?
__________________ "Well yes but I'm afraid I prematurely shot my wod on what was supposed to be a dry run if you will, so now I'm afraid I have something of a mess on my hands." Tobias Fünke, M.D.       |
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7th January, 2005, 11:58 AM
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| Connect it to ground, preferably through about a 100 ohm resistor, but probably just taking it straight to ground will work.
__________________ Avatar and sig graphic by Pitch. Subscribers! Ask about a custom graphic or avatar today! Gizmo Thermal Diode Mod and Direct-Die Water Block 8-Cheetah 18GiB U-2 SCSI MegaRAID Enterprise 1500/128MiB Samsung SyncMaster 955DF TTGI/Superflower TTS-520 PSU     |
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7th January, 2005, 12:45 PM
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| would connecting it to BSEL1 wok as this is already st to LOW or would this short something that I shouldnt? Thanks for the reply
__________________ "Well yes but I'm afraid I prematurely shot my wod on what was supposed to be a dry run if you will, so now I'm afraid I have something of a mess on my hands." Tobias Fünke, M.D. |
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7th January, 2005, 02:15 PM
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| Probably, but quite frankly I don't know enough to be certain. Generally, you don't tie pins to a voltage rail directly because you have the potential for biasing the chip substrate into a state that you don't want. Adding a resistor provides a safety margin. That being said, it generally doesn't cause a problem to tie a pin directly to ground, or to tied three or four pins together at the same point.
__________________ Avatar and sig graphic by Pitch. Subscribers! Ask about a custom graphic or avatar today! Gizmo Thermal Diode Mod and Direct-Die Water Block 8-Cheetah 18GiB U-2 SCSI MegaRAID Enterprise 1500/128MiB Samsung SyncMaster 955DF TTGI/Superflower TTS-520 PSU |
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7th January, 2005, 02:46 PM
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| From what I can gather BSEL0 on the chip connects to nothing where as BSEL1 is Low which I think means it's gruonded. So my thinking is that to trick the board into believing both BSEL pins are low a small piece of wire between the two BSEL pins would giver the Low signal to the board and run at the fsb that this configuration is for. I'm gonna try it tonight, if it isn't successful is there much of a chance of damage or would reversing the wiring put things back to normal?
__________________ "Well yes but I'm afraid I prematurely shot my wod on what was supposed to be a dry run if you will, so now I'm afraid I have something of a mess on my hands." Tobias Fünke, M.D. |
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7th January, 2005, 04:57 PM
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| Just a thought, instead of trying to underclock the processor to 1.8Ghz, why dont you just buy a second hand processor off Ebay, or do i not get the plot here? It sounds alot easier
__________________ Code:
Main machine Gateway machine Wifey's machine
O/S WIN XP Pro SP1 SuSE 9.2 WIN XP Pro SP2
CPU 2.8 Celeron D 1Ghz Pentium III 2.4 Celeron D
RAM 768MB PC2700 512MB PC133 512mb PC2700
HDS 40GB Excelstar 20GB Quantum Fireball 40GB
VID XFX FX6600GT 128MB NVidia 2 MX400 32MB O/B AGP Video
MOB Eliteforce ECS 661FX-M DELL DELL
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7th January, 2005, 05:16 PM
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| they don't do deleron d's down to those speeds and the celeron d is a much better chip than the northwood based one, plus I think if I make this system work a few friends want them and I can't be doing with going on ebay for several chips
__________________ "Well yes but I'm afraid I prematurely shot my wod on what was supposed to be a dry run if you will, so now I'm afraid I have something of a mess on my hands." Tobias Fünke, M.D. |
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7th January, 2005, 05:28 PM
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| kool
__________________ Code:
Main machine Gateway machine Wifey's machine
O/S WIN XP Pro SP1 SuSE 9.2 WIN XP Pro SP2
CPU 2.8 Celeron D 1Ghz Pentium III 2.4 Celeron D
RAM 768MB PC2700 512MB PC133 512mb PC2700
HDS 40GB Excelstar 20GB Quantum Fireball 40GB
VID XFX FX6600GT 128MB NVidia 2 MX400 32MB O/B AGP Video
MOB Eliteforce ECS 661FX-M DELL DELL
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7th January, 2005, 09:27 PM
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__________________ "Well yes but I'm afraid I prematurely shot my wod on what was supposed to be a dry run if you will, so now I'm afraid I have something of a mess on my hands." Tobias Fünke, M.D. |
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8th January, 2005, 09:39 PM
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| Well it worked, once I get some ceramanique I'm gonna see how low I can get the voltage on it, it already idles at room temp (25C) though and at full load it's now 35C compared with 37C
__________________ "Well yes but I'm afraid I prematurely shot my wod on what was supposed to be a dry run if you will, so now I'm afraid I have something of a mess on my hands." Tobias Fünke, M.D. |
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8th January, 2005, 10:33 PM
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| whoops forgot my attachement
__________________ "Well yes but I'm afraid I prematurely shot my wod on what was supposed to be a dry run if you will, so now I'm afraid I have something of a mess on my hands." Tobias Fünke, M.D. |
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18th January, 2005, 02:33 PM
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| 0.975V and cool as a cucumber. It actually gives it's self more volts under load, goes up to 0.99V
__________________ "Well yes but I'm afraid I prematurely shot my wod on what was supposed to be a dry run if you will, so now I'm afraid I have something of a mess on my hands." Tobias Fünke, M.D. |
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18th January, 2005, 06:06 PM
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| If the load temperature difference is only 2C is it really worth the effort and 600Mhz sacrifice??
__________________ DFI SLi-D, Opteron 144 @ 2.8Ghz, 4x512MB PDP XBLK, 160GB WD Caviar SE, Benq 1620DW DVD-RW, X1800XT 256MB,Custom WC.  |
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18th January, 2005, 06:16 PM
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| ahh that was only with the underclock. with the undervolt as well it's down much more, room temp at idle and 30C at load, with a quiet 70mm fan at about 900rpm
__________________ "Well yes but I'm afraid I prematurely shot my wod on what was supposed to be a dry run if you will, so now I'm afraid I have something of a mess on my hands." Tobias Fünke, M.D. |
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18th January, 2005, 10:35 PM
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__________________ Linux(Ubuntu) and Windows(XP) User. Dual-Booting. Desktop: Intel E6600 2.4Ghz@3.2GHz(355MHz*9@1.3V), 6GB G. Skill DDR2-800(4-4-4-12 2T@2.0V), EVGA Nforce 680i LT SLI, NVIDIA 8500GT 512MB(500MHz Core + 450MHz Mem) etc, etc.  |
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19th January, 2005, 12:27 AM
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| not cool enough Its for a htpc so needs to be silent. 1.8ghz is more than enough and it allows the fan to run on extremely low rpms
__________________ "Well yes but I'm afraid I prematurely shot my wod on what was supposed to be a dry run if you will, so now I'm afraid I have something of a mess on my hands." Tobias Fünke, M.D. |
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19th January, 2005, 09:21 PM
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| why dont you give it a try at stock, and the if it overheats, then spend the time underclocking it?
__________________ Linux(Ubuntu) and Windows(XP) User. Dual-Booting. Desktop: Intel E6600 2.4Ghz@3.2GHz(355MHz*9@1.3V), 6GB G. Skill DDR2-800(4-4-4-12 2T@2.0V), EVGA Nforce 680i LT SLI, NVIDIA 8500GT 512MB(500MHz Core + 450MHz Mem) etc, etc. |
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19th January, 2005, 09:28 PM
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| I already did, at stock it needs the fan on too loud to keep it at safe temps, underclocked I can have it on silent
__________________ "Well yes but I'm afraid I prematurely shot my wod on what was supposed to be a dry run if you will, so now I'm afraid I have something of a mess on my hands." Tobias Fünke, M.D. |
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19th January, 2005, 09:39 PM
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__________________ Avatar and sig graphic by Pitch. Subscribers! Ask about a custom graphic or avatar today! Gizmo Thermal Diode Mod and Direct-Die Water Block 8-Cheetah 18GiB U-2 SCSI MegaRAID Enterprise 1500/128MiB Samsung SyncMaster 955DF TTGI/Superflower TTS-520 PSU |
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19th January, 2005, 09:58 PM
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| me likes a loud compy....lol anyway, good luck on the underclock.
__________________ Linux(Ubuntu) and Windows(XP) User. Dual-Booting. Desktop: Intel E6600 2.4Ghz@3.2GHz(355MHz*9@1.3V), 6GB G. Skill DDR2-800(4-4-4-12 2T@2.0V), EVGA Nforce 680i LT SLI, NVIDIA 8500GT 512MB(500MHz Core + 450MHz Mem) etc, etc. |
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