BIOS setting and its interesting effect

dark2099 · Apr 13, 2008, 11:46 PM

So I was just doing a little research on the setting for Spread Spectrum in my BIOS and came upon a little bit of information about it (most of which I didn't understand) but it was recommended for OCing that it be disabled, which I did (left it alone previously since I wasn't sure what it did). After changing it and starting my computer, the idle temps of my CPU dropped from bouncing between 28c-31c to 22c-24c with the CPU at 1.478 volts. Guess I'm just curious if anyone had any info/ideas on why it was causing the increase in temps?

HTC · Apr 13, 2008, 11:51 PM

Quote:

Originally Posted by dark2099

So I was just doing a little research on the setting for Spread Spectrum in my BIOS and came upon a little bit of information about it (most of which I didn't understand) but it was recommended for OCing that it be disabled, which I did (left it alone previously since I wasn't sure what it did). After changing it and starting my computer, the idle temps of my CPU dropped from bouncing between 28c-31c to 22c-24c with the CPU at 1.478 volts. Guess I'm just curious if anyone had any info/ideas on why it was causing the increase in temps?

Which spread spectrum setting? I have 3 of those in my BIOS.

dark2099 · Apr 13, 2008, 11:55 PM

Mine just has 2, Enabled and Disabled, doesn't give options for anything else, I think the ECS board I got my 4800+ came with had a few settings for percentages.

Mussels · Apr 13, 2008, 11:58 PM

spread spectrum is designed to alter the frequency slightly, in order to reduce EMI. When OCing and pushing things to their limits, that bit of wiggle can just push it into instability.

It wont/cant affect temps at all - its just a coincidence.

HTC · Apr 14, 2008, 12:02 AM

Quote:

Originally Posted by dark2099

Mine just has 2, Enabled and Disabled, doesn't give options for anything else, I think the ECS board I got my 4800+ came with had a few settings for percentages.

That's not what i meant: my BIOS has 3 different spread spectrum settings, each with enable, disable and/or auto options.

dark2099 · Apr 14, 2008, 12:05 AM

Oh, there is only one in my BIOS, just called Spread Spectrum.

Mussels · Apr 14, 2008, 12:09 AM

spread spectrum can have multiple options because its on different things - for example, it could be for CPU, ram, and PCI slots.

pbmaster · Apr 14, 2008, 12:43 AM

So is it best to turn it off or what?

Mussels · Apr 14, 2008, 02:51 AM

Quote:

Originally Posted by pbmaster

So is it best to turn it off or what?

when overclocking, yes

Apr 13, 2008, 11:46 PM	#1
dark2099 Join Date: Feb 2008 Location: where everyone wants to be Posts: 4,152 (2.16/day) Thanks: 472 Thanked 751 Times in 624 Posts System Specs	BIOS setting and its interesting effect So I was just doing a little research on the setting for Spread Spectrum in my BIOS and came upon a little bit of information about it (most of which I didn't understand) but it was recommended for OCing that it be disabled, which I did (left it alone previously since I wasn't sure what it did). After changing it and starting my computer, the idle temps of my CPU dropped from bouncing between 28c-31c to 22c-24c with the CPU at 1.478 volts. Guess I'm just curious if anyone had any info/ideas on why it was causing the increase in temps? __________________ Heatware Check out Gomez Peer on how to make your PC work for you. Referred by dark2099 please! Mini Rig: Biostar TP67XE / i5 2500k / Corsair H55 / 2x4GB PNY / XFX 7770 / Corsair CX500M / Win 8 64 bit / Thermaltake V9 Blackwidow

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Apr 13, 2008, 11:55 PM	#3
dark2099 Join Date: Feb 2008 Location: where everyone wants to be Posts: 4,152 (2.16/day) Thanks: 472 Thanked 751 Times in 624 Posts System Specs	Mine just has 2, Enabled and Disabled, doesn't give options for anything else, I think the ECS board I got my 4800+ came with had a few settings for percentages. __________________ Heatware Check out Gomez Peer on how to make your PC work for you. Referred by dark2099 please! Mini Rig: Biostar TP67XE / i5 2500k / Corsair H55 / 2x4GB PNY / XFX 7770 / Corsair CX500M / Win 8 64 bit / Thermaltake V9 Blackwidow

System Name:	Everchanging
Processor:	Core i7 3770k
Motherboard:	ASUS Sabertooth z77
Cooling:	Corsair H100 with 2x Corsair SP120 High Pressure
Memory:	2x4GB G.Skill Trident X 2400MHz 9-11-11-31
Video Card:	HIS IceQ Turbo 7950
Hard Disk:	Lots
Optical Drive:	LG BluRay Burner
CRT/LCD Model:	Samsung T260HD + Acer H233H
Case:	Corsair 800D
Sound Card:	Creative Sound Blaster Z
PSU:	Enermax Revolution 85+ 1050w
Software:	Windows 8 x64

Apr 13, 2008, 11:58 PM	#4
Mussels Doctor Moderator Join Date: Oct 2004 Location: Bendigo, Australia (NOT THE USA) Posts: 34,559 (10.96/day) Thanks: 3,700 Thanked 8,693 Times in 6,392 Posts System Specs	spread spectrum is designed to alter the frequency slightly, in order to reduce EMI. When OCing and pushing things to their limits, that bit of wiggle can just push it into instability. It wont/cant affect temps at all - its just a coincidence. __________________ Edumacational thread about PC Audio My external HDD's.5x samsung 1TB + 2x Seagate 1.5TB = 8 TB external storage 32 Bit OS vs 64 bit OS information How to get hardware accelerated H264 playback (DXVA) Netbook Owners United!

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Apr 14, 2008, 12:05 AM	#6
dark2099 Join Date: Feb 2008 Location: where everyone wants to be Posts: 4,152 (2.16/day) Thanks: 472 Thanked 751 Times in 624 Posts System Specs	Oh, there is only one in my BIOS, just called Spread Spectrum. __________________ Heatware Check out Gomez Peer on how to make your PC work for you. Referred by dark2099 please! Mini Rig: Biostar TP67XE / i5 2500k / Corsair H55 / 2x4GB PNY / XFX 7770 / Corsair CX500M / Win 8 64 bit / Thermaltake V9 Blackwidow

Apr 14, 2008, 12:09 AM	#7
Mussels Doctor Moderator Join Date: Oct 2004 Location: Bendigo, Australia (NOT THE USA) Posts: 34,559 (10.96/day) Thanks: 3,700 Thanked 8,693 Times in 6,392 Posts System Specs	spread spectrum can have multiple options because its on different things - for example, it could be for CPU, ram, and PCI slots. __________________ Edumacational thread about PC Audio My external HDD's.5x samsung 1TB + 2x Seagate 1.5TB = 8 TB external storage 32 Bit OS vs 64 bit OS information How to get hardware accelerated H264 playback (DXVA) Netbook Owners United!

Apr 14, 2008, 12:43 AM	#8
pbmaster Join Date: Aug 2006 Location: Savannah, GA Posts: 1,985 (0.80/day) Thanks: 131 Thanked 295 Times in 275 Posts System Specs	So is it best to turn it off or what? __________________ “pbmaster your tongue in your mouth speaks the truth” -von kain

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