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Nov 14, 2007, 12:34 PM
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#1
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ZooooM!
Join Date: Apr 2007
Location: USA, Missouri
Posts: 570
Rep Power: 12
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PCIe bus speed and voltage
i was wondering is there was a recommended bus speed and voltage for my oc'ed card that may yeild an even higher OC than i currently have  |
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Nov 14, 2007, 02:03 PM
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#2
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4870X2 Anyone??
Join Date: Nov 2006
Location: New York
Posts: 2,111
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i run 120mhz on my PCIE
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Nov 14, 2007, 02:04 PM
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#3
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ZooooM!
Join Date: Apr 2007
Location: USA, Missouri
Posts: 570
Rep Power: 12
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ok cool
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Nov 14, 2007, 02:41 PM
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#4
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DriverHeaven Senior Member
Join Date: Jun 2003
Location: Canada
Posts: 2,938
Rep Power: 40
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Negligable difference in performance, run some benchmarks if you're doubtful.
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Nov 14, 2007, 02:47 PM
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#5
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Member
Join Date: Mar 2003
Posts: 5,989
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PCIe freq at 120MHz is may not be too high on one motherboard platform, but it can be too high and cause damage to some different platform, different system configuration, likes RAID sets, SATA drive corruption.
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Nov 14, 2007, 08:41 PM
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#6
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4870X2 Anyone??
Join Date: Nov 2006
Location: New York
Posts: 2,111
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Quote:
Originally Posted by PangingJr
PCIe freq at 120MHz is may not be too high on one motherboard platform, but it can be too high and cause damage to some different platform, different system configuration, likes RAID sets, SATA drive corruption.
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Quite possibly 
Most recommend 100-110mhz I would go with that if your unsure. |
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Nov 15, 2007, 12:44 PM
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#7
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ZooooM!
Join Date: Apr 2007
Location: USA, Missouri
Posts: 570
Rep Power: 12
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AH....well good thing ihaven't messed around with it yet lol
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Nov 15, 2007, 03:20 PM
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#8
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DriverHeaven Senior Member
Join Date: Nov 2005
Location: Winnipeg, Manitoba, Canada
Posts: 1,270
Rep Power: 22
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I get major benefits at about 135MHz in 3DMark benchies, that is with an IDE drive. The best I can do running a RAID or SATA drive is 114MHz with the same board or it won't "find" the drive to boot.
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Nov 17, 2007, 05:46 PM
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#9
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ZooooM!
Join Date: Apr 2007
Location: USA, Missouri
Posts: 570
Rep Power: 12
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gotcha thanks all
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Nov 20, 2007, 10:46 PM
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#10
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Noise? What noise?
Join Date: May 2005
Location: Canada
Posts: 6,816
Rep Power: 35
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Quote:
Originally Posted by PangingJr
PCIe freq at 120MHz is may not be too high on one motherboard platform, but it can be too high and cause damage to some different platform, different system configuration, likes RAID sets, SATA drive corruption.
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Not on modern motherboards. It used to be the case but they all plug directly into the northbridge now. The only risk is damaging anything plugged into the PCIe slots themselves, but PCI-e is far far far less frequency sensitive than PCI was.
IIRC some nVidia cards were fine up to 150MHz and ATI's up to 130 or so (they have a "happy" setting and everything else except that and stock yields no gain), but that was long ago. You've still got alot of bandwidth to play with, more than you'll ever need, so if it ain't broke  |
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Nov 21, 2007, 05:02 AM
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#11
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Member
Join Date: Mar 2003
Posts: 5,989
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really? it's still create problem with my onboard sound and RAID. may be so what's next my board is old or it sucks.
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Dec 22, 2007, 06:17 PM
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#12
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Noise? What noise?
Join Date: May 2005
Location: Canada
Posts: 6,816
Rep Power: 35
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Quote:
Originally Posted by PangingJr
really? it's still create problem with my onboard sound and RAID. may be so what's next my board is old or it sucks.
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Probably. The best parallel I can draw to it is AthlonXP boards. The last of them had integrated SATA (because SATA got hot just as the AXP's were being phased out), but most of them were just plumbed into the PCI bus along with GBe and such, and changing the PCI frequency (i.e. if you had control over it only with a divider and not a frequency lock) would cause issues because those devices got clocked higher along with it.
These days most things are plumbed right into the northbridge... so as long as that stays cool everything is fine.
Also consider that even a year or so ago, boards were not nearly as OC friendly as they are today. Manufacturers expect people to be OCing these days more than leaving it alone. Just look at the memory market for example. Hardly anything in the high end that is sold is JEDEC spec compliant  |
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