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ASUS Crosshair V Formula PCI-Express Frequency Overclocking???

post #1 of 4
Thread Starter 
Has anyone done any overclocking on the PCIe frequency?

I have the Crosshair V board and the settings available for PCIe frequency is between 100-150Mhz. I would think that you can change the frequencies on other boards too. If you have any experience with overclocking this please let me know.

Does overclocking the PCIe increase graphics performance?

Does overclocking the PCIe increase GPU bandwidth?

Is it even worth it to overclock the PCIe?

I am using:

AMD FX-8120 Bulldozer 8-Core 3.1GHz @ 4.94Ghz
ASUS Crosshair V Formula 990FX AM3+
2 x XFX Radeon HD 6790's 1GB GDDR5 256-bit 840Mhz @ 925MHz
2 x 4GB Corsair Dominator GT 1866Mhz @ 2000Mhz (9-10-9-027)

I have eyefinity setup and would like to increase my fps while playing games like BF3 and MW3.

Will overclocking PCIe frequency have any effect on frames per second?

Thank you for your help and your time.
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post #2 of 4
No, it attributes to no such performance gain from the GPU and all it does is cause instabilities if you OC. You're meant to keep it locked at 100 thumb.gif
Kukumonster
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A pleasant surprise :)
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Kukumonster
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A pleasant surprise :)
Cooler Master USP 100 Black Edition
Value redefined.
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Core i5 2320 Intel DH67BL Sapphire R9 285 Corsair 8GB (4x2)  
Hard DriveHard DriveHard DriveCooling
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post #3 of 4
Thread Starter 
Quote:
Originally Posted by PunkX 1 View Post

No, it attributes to no such performance gain from the GPU and all it does is cause instabilities if you OC. You're meant to keep it locked at 100 thumb.gif

Thank you for your help.

Do you know why there is even an option to change it then or why its set so high on list in bios?

Why is part of the manual overclocking menu and like third on this list when it really doesnt do anything?
FUSION
(13 items)
 
  
CPUMotherboardRAMHard Drive
AMD Llano A8-3870k ASUS F1A75-M Pro FM1 uATX Corsair Vengeance Corsair Force 3 
Hard DriveOptical DriveCoolingOS
Hitachi ASUS DVD Burner Cooler Master Hyper TX3 Windows 7 Ultimate 64-bit 
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ASUS VE247H 24" 1080p Razer Lycosa Corsair CX500 Fractal Define Design R3 ATX 
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Razer DeathAdder 
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FUSION
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CPUMotherboardRAMHard Drive
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Hard DriveOptical DriveCoolingOS
Hitachi ASUS DVD Burner Cooler Master Hyper TX3 Windows 7 Ultimate 64-bit 
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Razer DeathAdder 
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post #4 of 4
Quote:
Originally Posted by mikezachlowe2004 View Post

Thank you for your help.
Do you know why there is even an option to change it then or why its set so high on list in bios?
Why is part of the manual overclocking menu and like third on this list when it really doesnt do anything?

It's nothing more than a third party gimmick that's part of the BIOS really. Theoretically, it's supposed to give you a small bandwith increase (I've heard of people getting a 1-2% increase in benches with the feq set to 130 Mhz). However, your sound card(if you have one that is) and pretty much any external device is tied to the lanes and an OC would play havoc with stability. The sound may go off and you may experience random crashes, artifacting on the screen for no apparent reason at all. I'd suggest leaving it be.
Kukumonster
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A pleasant surprise :)
Cooler Master USP 100 Black Edition
Value redefined.
Amd Athlon II X3 435
CPUMotherboardGraphicsRAM
Core i5 2320 Intel DH67BL Sapphire R9 285 Corsair 8GB (4x2)  
Hard DriveHard DriveHard DriveCooling
Kingston HyperX Fury 240GB  WD Blue 1TB Seagate Barracuda 500GB Noctua NH-C14S 
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Cooler Master USP100 Black Edition 
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Kukumonster
(13 items)
 
A pleasant surprise :)
Cooler Master USP 100 Black Edition
Value redefined.
Amd Athlon II X3 435
CPUMotherboardGraphicsRAM
Core i5 2320 Intel DH67BL Sapphire R9 285 Corsair 8GB (4x2)  
Hard DriveHard DriveHard DriveCooling
Kingston HyperX Fury 240GB  WD Blue 1TB Seagate Barracuda 500GB Noctua NH-C14S 
CoolingOSMonitorPower
Noctua NF-A140*2 Windows 10 Pro (TP) LG 22" 1080p  Seasonic G-550 F3 550W 
Case
Cooler Master USP100 Black Edition 
  hide details  
Reply
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