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In Reply to: RE: cPlay - the open source high-end audio player using ASIO posted by cics on May 05, 2008 at 13:31:58
Hello, everybody! My mermaid gave me something after a long and hard time together. It was a shiny scale, and on its avers was written:
1. Open your boot.ini and add the following: /CLKLVL
Put it somewhere in the middle of the string (before /nopae and after fastdetect..., e.g.) This will stop processor from answering to IRQ requests (constant) from those onboard devices that are designed by old specifications. There is a number of such. Your soundcard IRQ won't be affected.
2. On the revers of the shiny scale I found this advice:
get into bios-M.I.T intelligent tweaker, open ADVANCED VOLTAGE SETTINGS
and set LOAD LINE CALIBRATION to ENABLED (allows to control vdroop [probably voltage DROP]}directly). It will more or less make cpu work at constant voltage without being reduced or increased.
The effect of both tweaks is immediate and grows within a 1-2 hours burn-in.
Serge.
Edits: 11/26/11Follow Ups:
Sorry, folks. The boot.ini setting IS RISKY. It can crash your machine and reset settings in BIOS. Experienced by Theob and myself.
Serge.
The boot.ini setting IS RISKY.
It works fine on the Atom :> )
That last set of reg changes c/w deleting logonui.exe has made as noticeable a difference as any other "XP Slimming" exercise on my systems. Thanks for the research!
BTW, anyone using a headless setup should also be able to delete the Pointer port, Keyboard port, Pointer class, Keyboard class and Parallel Arbiter (spelling?) keys.
Can't say if doing so makes any difference but it makes me feel good.
Dave
=It works fine on the Atom :> ) =
Of course. Atom is not downclocked. ;).
Serge.
http://cmp2-mihaylov.narod.ru/
My cMP2: Windows XP SP2 Ru, Gigabyte GA-H55M-UD2H, Intel Core i3-530, Corsair CM3X160C9DHX 1GB, system drive - Transcend IDE FLASH MODULE TS2GDOM40V-S, ESI Juli@, full linear PSU, NAS - WD My Book Liv
Atom is not downclocked.
You're right. It runs properly right out of the box. I said only that it worked, I didn't say it did any good.
Seriously, I don't see what downclocking has to do with it. As MS notes,/CLKLVL Causes the standard x86 multiprocessor HAL (Halmps.dll) to configure itself for a level-sensitive system clock rather then an edge-triggered clock. Level-sensitive and edge-triggered are terms used to describe hardware interrupt types.and seems relevant to IRQs from legacy (edge-triggered) devices. I'd be a bit surprised to find one on a modern mobo but I could well be wrong. Can anyone explain?
And I said only that it worked due to it's stable mode because it is not downclocked. Obviously the option /CLKLVL leads to some instable mode with downclocking settings. So BIOS settings reset into default at start up as at overclocking.
Serge.
http://cmp2-mihaylov.narod.ru/
My cMP2: Windows XP SP2 Ru, Gigabyte GA-H55M-UD2H, Intel Core i3-530, Corsair CM3X160C9DHX 1GB, system drive - Transcend IDE FLASH MODULE TS2GDOM40V-S, ESI Juli@, full linear PSU, NAS - WD My Book Liv
Ok I am not able to do the load calibration revision (not available on my mobo) I did only the /CLKLVL in the boot file. And while it changed the sonics I'm still not sure I like it. Whenever I shut down my cmp pc and then eventually reboot it reverts bios to 1600 mhz and slower memory timings. So when I rebooted after /CLKLVL it sounded great. When I eventually got back to my 'listening bios levels' which is 840 mhz and faster memory settings it sounded a bit underpowered...soundstage moved closer, bass got sloppier and highs were more midrangey. It sounded a bit voluptuous if I had to give it one word. I will give it a bit more time but if I stay with /CLKLVL I'll probably have to bump up cpu speed. I'm reluctant to go to 1600 mhz always for the risk it may be to cpu heat.
Hello, Theo! I just wanted to post about these dangers. It went OK for 18 hours then crashed. I didn't know it was because of /CLKLVL. From the start it sounded very clean, so i posted it immediately.
Serge.
1.=This will stop processor from answering to IRQ requests (constant) from those onboard devices that are designed by old specifications. =
Why you think so?
I have found this:
"/CLKLVL Causes the standard x86 multiprocessor HAL (Halmps.dll) to configure itself for a level-sensitive system clock rather then an edge-triggered clock. Level-sensitive and edge-triggered are terms used to describe hardware interrupt types." CLKLVL = Clock Level.
2. LOAD LINE CALIBRATION is the feature to automatically maintain constant Vcore in overclocking systems when current consumption of CPU is very high. The current consumption of CPU in cMP2 is relatively low so all automatic features should be disabled because they generate pollutions.
Serge.
http://cmp2-mihaylov.narod.ru/
My cMP2: Windows XP SP2 Ru, Gigabyte GA-H55M-UD2H, Intel Core i3-530, Corsair CM3X160C9DHX 1GB, system drive - Transcend IDE FLASH MODULE TS2GDOM40V-S, ESI Juli@, full linear PSU, NAS - WD My Book Liv
Almost twice the Vcore voltage?
DSIABLED when you write ENABLED.
I assume the photo has nothing to do with the trick other than to show where the trick is performed BUT who, following you, would not know and hence, my confusion!!!!
where to make this change. The pic is from manual pdf. It shows the default values. Sorry, if it is confusing
Serge.
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