F3-10666CL7D-4GBRH & asus M4A785TD-V EVO

[pilipali]

mb: M4A785TD-V EVO, bios ver. 0501
cpu: amd phenomII 905e
mem: F3-10666CL7D-4GBRH

Memory works fine with stock cpu clock 12.5x200, memory set in bios 666mhz 7-7-7-21 1.500v bios has no command rate setting so its seem to be always 1T. Tested memtest 4.00 two passes.

Problem is when i overclock cpu system wont post, i have drop memory speed setting to 400mhz when i raise the cpu bus speed more than 220mhz.

I have lower the ht link and cpunb freq to 7x or 8x. I have raised cpu voltage to 1.25v and cpunb voltage to 1.30v

Why doesnt the memory work 1333mhz cpu 10x250 mem settings 533mhz 9-9-9? 10x250 is still stock frequency.

[Lemzip]

same issue with me, different g skill memory, slightly different asus board M4A785TD-M Evo. G skill memory just doesnt work well with these current boards/bios.

[Tradesman]

It's in large part the 0501 BIOS, dated 10-22-09, might try falling back to the 0410 version, 9/17/09 which I believe will work ......... then wait for the next release (later this month I believe, where they should correct the 'omitted' Command Rate problem

[GSKILL TECH]

Use the rated timings, the 9-9-9 @ 533MHz is much too loose.

Use 7-7-7-21 DDR3-1333

Thank you
GSKILL SUPPORT

[pilipali]

I tried the 0410 bios wasn't any better, system wont post even
12.5x230mhz
cpu volt 1.25v
cpunb volt 1.30v
other voltages stock
nb & ht 1840mhz
memory 1.50v 533 divider 7-7-7-21 or auto


Only way i can make the system even post at 230mhz htt is raise the memory voltage to 1.55v, and 240mhz have to go over 1.60v. Haven't run memtest those settings might no be even stable.

I used to have amd 760g ddr2 board and the same cpu went 12.5x250mhz with stock voltage, so is the memory holding back here or what?

[G.SKILL]

while you're running at FSB 230 or 240mhz, you are not only running at DDR3 1333
you're running more than DDR3 1400, even 1500
so, you may need to set the memory divider to 1066
thanks


G.S

[pilipali]

I have been running it at 1066. I drop the divider from 666 to 533 so 240x5.33 is 1279mhz. Only way that i can overclock easy is drop the memory divider to 400 then i can raise the fsb, but then the memory is slow. I just want my system to work at 12.5x250mhz, memory 1333mhz 250x5.33

[pilipali]

I flashed the new 0505 bios, still wont post 12.5x230mhz memory 230x5.33 1225.9mhz. when the memory is 230x4.00 posts fine. The new bios has no Command Rate option.

[GSKILL TECH]

Try testing each memory module individually to see if they will operate alone at DDR3-1333 or DDR3-1225.9

Thank you
GSKILL SUPPORT

[pilipali]

I ran 7 passes memtest 4.00 at stock settings 12.5x200 memory 1333mhz 7-7-7-21-30 T1 no errors then i ran 12h prime blend test, no errors. These tests were made both modules installed.

Today i tested each module individually and one module passed post test at 12.5x230 1225.9mhz but wasn't stable to boot in memtest. The second module did not post at 12.5x230. I also tried the modules in the other slots, no difference.

When i was done testing the modules i installed both back to motherboard and when i was pushing one of the modules to memory slot i heard three snaps, thats weird usually there only two snaps which comes from retaining clips, so took the module off and noticed that the ramsink was popped off from one side of the module. The heatsticker thats between memory chips and the ramsink was loose, the sticker was in place only in one memory chip. I pressed the ramsink back to the memory chips. Is the glue in the sticker bad or how is it possible that the ramsink can go loose?

[Tradesman]

Have you tried w/ the Command Rate at 2T, not sure your 905 can carry at 1T

[pilipali]

The bios has no command rate option so it always 1T, i already mentioned it twice in my earlier posts. I've tried 0410, 0501, 0505 none of these have it.

[Lemzip]

Think a few of us have narrowed down the issue pilipali, check my last post here

http://gskill.us/forum/showthread.php?t=2300

[pilipali]

Yes we have. I've read all the threads here where is M4A785TD mentioned. I hope that asus will fix the problem fast, and adds the command rate setting in bios.

[Tradesman]

If you can't change Command Rate, might try loosening timings to 8-8-8-24 and raise tRFC to 160 or 195