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Execute disable bit??

post #1 of 4
Thread Starter 
I have an asus rampage formula +E8500 oc to 4037Mhz (Stable intel burn in & prime & orthos) and have a question about 2 settings

1. Execute disable bit: What does this do & can I enable it?

2. C1E: I know what this does it lowers my multiplier from 9.5 to 6 but with my oc and voltage my temps only lower 1 degree celsius. So is there any point in using it cause the multiplier is constantlu going up & down. I have read other places where C1E can cuause crashing but I know that on an asus rampage formula + E8500 all is well with this setting but id doesn't lower idle temp cause the voltage is still where I have it set for oc right??

So I would like some input on C1E & some knowledge about execute disable bit. Because I would like to I guess enable it (Default) if it won't affect my oc
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post #2 of 4
Execute disable bit lets the OS designate sections of memory as for code and data, thereby preventing certain types of viruses from working. In Windows this is called hardware data execution prevention. It's safe to enable in BIOS, but you also have to enable it in Windows or it doesn't do anything.

C1E is an enhanced halt state which drops the CPU frequency when the CPU is idle. When it starts doing things again, the frequency goes back up. This is invisible to the user.

Closely related is EIST (SpeedStep) which drops the CPU multiplier when CPU load is low. SpeedStep can be controlled through the OS power management facilities allowing users to balance power savings vs. performance on the fly.

Most OCers will say to disable C1E and EIST, but it's safe to enable them if you have a truly stable OC. (And it seems the Rampage Formula has a BIOS problem where you can't disable EIST in certain circumstances when overclocking.)
Edited by error10 - 10/19/08 at 10:01am
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post #3 of 4
Thread Starter 
So does C1E really do any good if you have your voltage manually set?? Because I can see by watching the temps that just lowering the multi. doesn't do any good
My System
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CPUMotherboardGraphicsRAM
E8500 Asus Rampage Formula MSI 4870 1GB 4Gb Corsair Dominator 1066 
Hard DriveOptical DriveOSMonitor
5x Seagate 2 Ide 2sata Xp Home 32 bit KDS 17in Lcd 
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OCZ Gameextreme 750w Sunbeam Full tower Microsoft optical 
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CPUMotherboardGraphicsRAM
E8500 Asus Rampage Formula MSI 4870 1GB 4Gb Corsair Dominator 1066 
Hard DriveOptical DriveOSMonitor
5x Seagate 2 Ide 2sata Xp Home 32 bit KDS 17in Lcd 
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OCZ Gameextreme 750w Sunbeam Full tower Microsoft optical 
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post #4 of 4
Quote:
Originally Posted by jcusimano2 View Post
So does C1E really do any good if you have your voltage manually set?? Because I can see by watching the temps that just lowering the multi. doesn't do any good
It'll reduce your power consumption somewhat when you're idle. That doesn't necessarily translate into lower temperatures.
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