Need help to get my Gskill above ddr550

[187(V)URD@]

My system is in my sig.

On 9*275 2.5-3-3-7@2.8-2.9V my system won't even boot.(not even pass memtest #5)
On 270mhz it gives a few errors in memtest but why won't they do the rated speeds?
It says Gskill 4400Le rated at DDR550 2.5-3-3-7 but i have a hard time to get at DDR550. I took this ram so i could do DDR600 because my daily use is 9*300.

I tried several bioses with no luck.
Currently using the 510-2 Fix bios.

Anyone can help me out here?
Btw: below you see a64 settings.

[eva2000]

Gskill TCCD can come in all forms and different weeks perform differently. What weeks do you have 431, 440, 504, 507 ?

try loosening trfc from 14 to 16, 17 or 18

play with drive/drive data strength and TREF combinations in memtest first then windows and take a read http://i4memory.com/showthread.php?t=327

i've never had a pair of 2x512MB Gskill PC4400LE that would do 300mhz easy so it might be too much of an ask, i've had 4 pairs of 2x512MB Gskill PC4400LE (2 are rma replacements for 1st 2 pairs which didn't do stock speeds) and 2x 256MB Gskill PC4400LE which do 305-315mhz 2.5-4-3-7

normally it's around 290mhz 2.5-3-3-7 to 294-296mhz 2.5-4-3-7

sure i can bench at 300mhz but no where near stable in pcmark04 custom memory test http://i4memory.com/showthread.php?t=474

[187(V)URD@]

week 431 it is.

I tried tref 16 and Trc 12 now and seems to work for 2.5-4-4-7@300 HTT

[187(V)URD@]

week 431 it is.

I tried tref 16 and Trc 12 now and seems to work for 2.5-4-4-7@300 HTT

Seems not to be stable at all. :/

[waddupmm]

Did you try 623-3?? Try 275*8x to rule out the cpu crapping out on you and than run some memtest your ram should be able to do those speed and timings easy, if not its rma time

[187(V)URD@]

623-2 seems to be much better for me.

I am on 294mhz 2.5-4-3-7@ 2.7V.
After 5 bioses i finnaly got one that works for my tccd's:)

[waddupmm]

Good to hear :)

[187(V)URD@]

the funny part is I can get 296mhz 2.5-4-3-7 stable but i can't get it 275mhz 2.5-3-3-7 stable like its rated on the box, gives me like 600 errors in one loop in memtest #5. Seems weird since it is an average LE overclock if I look around on forums.

[BioPC]

You can try in the BIOS this settings:

Drive strenght: Level 5 or 7
Data drive strenght: Level 2

You could try as well:
Idle cycle limit: 256

Bios 623-3 gives me the higher FSB/stability.

[187(V)URD@]

Alright I going to see if level 2 does the thing, if not I flash another bios (623-3).
Drive strenght: Level 5 gives me less errors then 3 and 7.

Also 623-3 is an offi bios but there is also another unoffi 623-3 bios. Which one do I need to take?

[187(V)URD@]

seems I can't save settings with 623-3 Bios. It won't boot anymore when i change default settings.