Vad menas med Spread Spectrum?|Överklockning, rekord och benchmarks|Forum|Nordichardware

Search
Forum Scope


Match



Forum Options



Minimum search word length is 3 characters - maximum search word length is 84 characters
Lost password?
The forums are currently locked and only available for read only access
sp_Feed sp_TopicIcon
Vad menas med Spread Spectrum?
Tratten[DEI]
Kommer du hit ofta?
Medlem
Forum Posts: 626
Member Since:
August 28, 2001
sp_UserOfflineSmall Offline
1
October 5, 2002 - 1:37 am
sp_Permalink sp_Print

Hoj, jag va å dola på lite i bios där jag hittade Spread Spectrum, den avaktiverade jag å nu funkar min överklockning fint fint ? men va va det jag tog bort ? :eye:

Tratten[DEI]
Kommer du hit ofta?
Medlem
Forum Posts: 626
Member Since:
August 28, 2001
sp_UserOfflineSmall Offline
207812
October 5, 2002 - 2:23 pm
sp_Permalink sp_Print

ingen som vet ???

p_webb
Kommer du hit ofta?
Medlem
Forum Posts: 486
Member Since:
December 6, 2001
sp_UserOfflineSmall Offline
207934
October 6, 2002 - 8:58 am
sp_Permalink sp_Print

inte jag eller.... men om man höjer Spread Spectrum kan man klocka mer då för när jag klocka min celeron 433mhz till 540 så låser den sig innan windows startar

Anton Nilsson
Member
Medlem
Forum Posts: 6496
Member Since:
November 29, 2001
sp_UserOfflineSmall Offline
207940
October 6, 2002 - 9:19 am
sp_Permalink sp_Print

Spread Spectrum ser till att man får en jämn strömförsörjning utan "spikes".
Spikes är tex. sånt du hör i en högtalare när du inte spelar musik o ändå hör du helt plötligt hur det knäpper till i högtalaren.

Inte så viktigt att köra, jag brukar alltid stänga av skiten även när jag inte klockar.

Tratten[DEI]
Kommer du hit ofta?
Medlem
Forum Posts: 626
Member Since:
August 28, 2001
sp_UserOfflineSmall Offline
207946
October 6, 2002 - 9:48 am
sp_Permalink sp_Print

Aha oki men det funkar ju bättre utan den på när jag klockar 🙂

Anton Nilsson
Member
Medlem
Forum Posts: 6496
Member Since:
November 29, 2001
sp_UserOfflineSmall Offline
207947
October 6, 2002 - 9:51 am
sp_Permalink sp_Print

Jepp så "ska det vara" också.

NH|Noddan
Kommer du hit ofta?
Medlem
Forum Posts: 1390
Member Since:
June 19, 2002
sp_UserOfflineSmall Offline
207965
October 6, 2002 - 11:32 am
sp_Permalink sp_Print

Vad är nackdelen med det då?

Hogan
Kommer du hit ofta?
Medlem
Forum Posts: 1577
Member Since:
April 14, 2001
sp_UserOfflineSmall Offline
207978
October 6, 2002 - 1:25 pm
sp_Permalink sp_Print

Hmm.......Det är väl för att jämna ut frekvensen, eftersom ingen klocka är perfekt.

Tratten[DEI]
Kommer du hit ofta?
Medlem
Forum Posts: 626
Member Since:
August 28, 2001
sp_UserOfflineSmall Offline
208360
October 7, 2002 - 7:35 pm
sp_Permalink sp_Print

Är det farligt att köra utan?

GRiDLoK
Almost a full-blooded keyboard-warrior
Medlem
Forum Posts: 250
Member Since:
December 29, 2000
sp_UserOfflineSmall Offline
208917
October 9, 2002 - 4:41 pm
sp_Permalink sp_Print

Tjing! Efter en snabb sökning på webben:

"When the motherboard's clock generator pulses, the extreme values (spikes) of the pulses creates EMI (Electromagnetic Interference). The Spead Spectrum function reduces the EMI generated by modulating the pulses so that the spikes of the pulses are reduced to flatter curves. It does so by varying the frequency so that it doesn't use any particular frequency for more than a moment. This reduces interference problems with other electronics in the area.

However, while enabling Spread Spectrum decreases EMI, system stability and performance may be slightly compromised. This may be especially true with timing-critical devices like clock-sensitive SCSI devices.

Some BIOSes offer a Smart Clock option. Instead of modulating the frequency of the pulses over time, Smart Clock turns off the AGP, PCI and SDRAM clock signals when not in use. Thus, EMI can be reduced without compromising system stability. As a bonus, using Smart Clock can also help reduce power consumption.

If you do not have any EMI problem, leave the setting at Disabled for optimal system stability and performance. But if you are plagued by EMI, use the Smart Clock setting if possible and settle for Enabled or one of the two other values if Smart Clock is not available. The percentage values denote the amount of jitter (variation) that the BIOS performs on the clock frequency. So, a lower value (0.25%) is comparatively better for system stability while a higher value (0.5%) is better for EMI reduction.

Remember to disable Spread Spectrum if you are overclocking because even a 0.25% jitter can introduce a temporary boost in clockspeed of 25MHz (with a 1GHz CPU) which may just cause your overclocked processor to lock up. Or at least use the Smart Clock setting as that doesn't involve any modulation of the frequency. "

snappat från "http://www.rojakpot.com/Speed_Demonz/BIOS_Guide/BIOS_Guide_02d.htm"

/GRiDDE

Tratten[DEI]
Kommer du hit ofta?
Medlem
Forum Posts: 626
Member Since:
August 28, 2001
sp_UserOfflineSmall Offline
209144
October 10, 2002 - 12:03 pm
sp_Permalink sp_Print

Tackar för det svaret... oj fick verkligen veta nu :bok:

Forum Timezone: Europe/Stockholm
Most Users Ever Online: 1030
Currently Online:
Guest(s) 35
Currently Browsing this Page:
1 Guest(s)
Top Posters:
Andreas Galistel: 16287
Jonas Klar: 15897
ilg@dd: 10810
Nyhet: 10607
Mind: 10550
Ctrl: 10355
Gueno: 9881
Guest: 9344
Snorch: 8881
Callister: 8468
Newest Members:
PetrbonFU PetrbonFU
Karine Bembry
Dolores Mcdaniels
Anibal McLeish
Francisca Alt
Alfie Everhart
Lester Huitt
Orlando Jorgensen
Mikki Lundgren
Dakota Kozlowski
Forum Stats:
Groups: 11
Forums: 59
Topics: 146630
Posts: 1300967

 

Member Stats:
Guest Posters: 2
Members: 79425
Moderators: 0
Admins: 11
Administrators: nordicadmin, Henrik Berntsson, Anton Karmehed, Carl Holmberg, Joel Oscarsson, Mikael Linnér, Mikael Schwartz, Andreas Paulsson, Nickebjrk, Mattias Pettersson, EmxL