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Old 03-01-2009, 09:19 PM   #1 (permalink)
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Default PCIe Frequency Setting

Built my computer a few weeks ago and was setting up the BIOS. One thing I noted but did not change was the PCI Express frequency. It was set to 100 by default, but ranges from 100 to 200.

Motherboard: Newegg.com - EVGA 123-YW-E175-A1 LGA 775 NVIDIA nForce 750i SLI ATX Intel Motherboard - Intel Motherboards
Video Card: Newegg.com - EVGA 896-P3-1267-AR GeForce GTX 260 Core 216 Superclocked Edition 896MB 448-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card - Desktop Graphics / Video Cards

Can I / Should I change it up to 200?
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Old 03-01-2009, 11:33 PM   #2 (permalink)
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Default Re: PCIe Frequency Setting

No leave that alone. I don't know exactly what it does but everything I have heard says to just leave it alone. One guy on the EVGA forums said you can bump it up to 105 but it didn't seem to change anything when I did it so just leave it alone.
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Old 03-02-2009, 01:13 AM   #3 (permalink)
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Default Re: PCIe Frequency Setting

it's good for 3DMARK runs. Bump it 140-165 and you'll see an increase in score.
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Old 03-02-2009, 01:24 AM   #4 (permalink)
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Default Re: PCIe Frequency Setting

Oh really? Hmm I might have to try that sometime. I take it its not best to leave it up there or is it basically just another form of overclocking?
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Old 03-02-2009, 01:56 AM   #5 (permalink)
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Default Re: PCIe Frequency Setting

No, I wouldn't leave it there for daily use and yes its another form of overclocking. Between 105 to 120 helps and is pretty safe. Running any higher I would only recommend when making a 3dmark run. Boosting the pci-e frequency helps w/ more bandwidth and texture loading. IE: gain some fps while gaming and higher scores in 3dmark.

edit: Like any OCing just be careful when doing it.
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Old 03-02-2009, 12:38 PM   #6 (permalink)
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Default Re: PCIe Frequency Setting

thats odd, i read all over that increasing the frequency messes with the SATA controllers and can corrupt data, and cause general instability if overclocked.... is that not true?
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Old 03-02-2009, 04:21 PM   #7 (permalink)
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Default Re: PCIe Frequency Setting

oh thats true for sure. Thats why I say to be careful. Just like any ocing there are risks that you take.
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