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Asus pk5c bios1105 and TWIN2X2048-8500C5DF V1.1


007bont

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hello,

 

ive been using the pk5c for quite a while now and i used to run it with memory sticks from (well it has something to do with king) regular pc6400 modules.

 

with the above combination i was able to get lots of difference oc profiles ranging from 2.4 to 4.2ghz. but without overclocking any memory!

 

now i thought i get some decent ram, wich im sure it is :biggrin:, but no way it will run on 1066 or higher.

 

the best i can get with normal voltage setting on the ram is 501mhz (eg 1002mhz)

Memory Voltage 2.2 Volts Version 1.x and 2.15 Volts for version 2.x.
while its clarly states 2.1 v on the modules??

http://www.houseofhelp.com/forums/showthread.php?t=54052

 

even when i use stock settings, like they have been descriped lots in this forum, there's no way it will run at 1066.

even when the bios is loading and starts counting the memory it often stops before it hits the 1000mb.

 

currently this is the only profile that runs smoothly (and actually works :D:)

 

*cpu ratio 9x

*fsb strap to nb 400

*fsb 376

*pcie 100

*dram frequency 1002

*dram command rate 2n

*cas 5

*ras 5

*ras 5

*ras 15

the rest of the memory is set to auto

*cpu volt 1.4875

*cpu pll volt auto

*fsb termination volt auto

* dram volt 2.1

*nb volt 1.4

*clock over charging volt 1.0

 

i ran memtest for 30 minutes on these settings and it gave 0 errors.

 

i hope you guys can give some advise on this.

1891815233_cpuznopic.JPG.04bafcc940438cbeae356abce3ac579f.JPG

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they say that this type of memory is not supported by them :bigeyes:

 

i do get the system to post sometimes when running the memory at 1066, but when running memtest after that it either fails to even start testing or it gives a lot of errors.

 

when using 1002mhz memtest runs fine

 

but what else is new from asus..

 

 

p.s by 400mhz i meant the memory speed ;) aka ddr800

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well im getting a bit closer now:

when adjusting bios settings to this, im able to boot into windows at 1066mhz

CHA CLK SKEW [150PS]

CHA FB SKEW [150PS]

Adjust CHB SKEW Support [ENABLED]

CHB CLK SKEW [000PS]

CHB FB SKEW [000PS]

 

861666715_cachemem1066mhz.png.43b913dc18818f43c9195011757511fe.png

 

 

but it isnt stable yet (bsod in the middle of 3dmark), but i was wondering if you may have any other suggestions on these settings...

 

(p.s these settings only worked in an oc'ed enviorment, using standard values these wont work)

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CHA CLK SKEW [150PS]

CHA FB SKEW [150PS]

Adjust CHB SKEW Support [ENABLED]

CHB CLK SKEW [000PS]

CHB FB SKEW [000PS]

 

 

well i changed the 150 to 300ps...and its running superb, even on a cold boot.

the bios post actually needs more time then windows needs to boot now :laughing: , so Corsiar you just made someone very happy :sunglasse

 

stock speeds can be used too (for a Q6600 2.4ghz, use a multiplier of 6!)

 

 

but if any of you have some extra ideas on those skew settings, please let me know!

 

p.s could someone from corsair please cancell rma no: 1065852

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  • Corsair Employee
You can also look at the BIOS optimization guide posted at Techarp the share ware version is pretty complete but if you really want to know about BIOS settings and can afford it I would suggest subscribing to their service and they will help you with any setting not listed in their Guide.
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ok these are the recommended setting when using a P5KC board, although they may work on other P5K boards aswell.

 

first things first, update the bios (if needed) to 1105, because that will give you certain features needed to tweak this board.

 

go to tab advanced and then select Jumperfree configuration.

 

like always set the timings manually. but by only doing this you probably have noticed that your system will not post.

 

in the second photo, you will see a section called SKEW:

set these to enabled and fill in the numbers displayed in the photo.

 

in theory by making just these settings your system should noot now.

untill the next morning, that is :D:

 

Asus boards have the nasty habbit of not booting up correctly after a while (cold boot) i've found that by increasing the vcore voltage a bit, that problem solves it self.

 

http://www.houseofhelp.com/forums/attachment.php?attachmentid=4387&stc=1&d=1225139813

 

http://www.houseofhelp.com/forums/attachment.php?attachmentid=4388&stc=1&d=1225139813

IMG_5278small.thumb.jpg.eb02ec1d9870daa04f0bddc8a0c4b044.jpg

IMG_5279small.thumb.jpg.dc056df4c6e01550614f6ab178d068c4.jpg

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