F2-8800CL5D-4GBPI wrong rated at 1.8v~1.9v for 1100mhz

[knacky]

hi
F2-8800CL5D-4GBPI wrong rated at 1.8v~1.9v for 1100mhz
with 1066 and 1.9v my rig fails at post, bios setup, boot, etc...
my mobo is dfi lp lt x48-t2r with bios 8.29
cpu q6600 at 400x9 1.45000v and all memory auto settings except voltage and divider 400/1066
so i start to test voltages and memtest86+ v2.01:
1.936v - fails - 0:00:02
1.941v - fails - 0:00:07
1.958v - fails - 0:02:29
1.972v - fails - 0:02:00
1.985v - fails - 0:03:24
2.000v - fails - 0:09:55
2.010v - fails - 0:10:07
2.030v - fails - 0:10:59
2.050v - ok - 4:06:28 with 7 passes
because memtest86+ is not windows so i put it at 2.1v
2.1v for 1066 is not 1.9v advertised for 1100
any ideas what cause this?
thanks

[Leeghoofd]

undervoltage of the mobo ? Trfc to 55 ? most users/reviewers get them at 1100(+) speeds at 1.9 volts... bad set ?

[RPGWiZaRD]

What's your timings? Grab MemSet (http://www.tweakers.fr/download/MemSet.exe) and post a screenie.

[knacky]

memset show 52 in trfc
all memory settings in auto except voltage
i also test it with 800 4-4-4-12:
1.710v - fail - 0:11:52
1.738v - fail - 0:11:52
1.744v - fail - 0:11:52
1.751v - fail - 0:11:52
1.759v - fail - 0:49:56
1.765v - - ok - 4:49:38 with 7 passes
2.050v at 1066 5-5-5-15 an 1.765v at 800 4-4-4-12
huge 0.285v difference

http://img380.imageshack.us/img380/9013/f28800cl5d4gbpi106621vwk3.th.jpg (http://img380.imageshack.us/my.php?image=f28800cl5d4gbpi106621vwk3.jpg)http://img380.imageshack.us/images/thpix.gif (http://g.imageshack.us/thpix.php)

[G.S Technician]

it might be the motherboard compatible issue since every mobo is different. you can send back for rma but if repalcement does the same, then it is mobo voltage problem.

[nfm]

Most likely bad sticks or you messed up the timings. My first kit maxed out at 525Mhz (thanks g.skill :shakes:) and wouldn't go beyond even at 2.5v. New kit does DDR1100 1.706v via DMM :):
http://img396.imageshack.us/img396/1011/550fsbdf3.jpg

Also DFI x48 needs DS/DSS tweaked:
http://img528.imageshack.us/img528/7525/dfitweakingzk9.jpg

[knacky]

yesterday i have tested the 2 memory bars separately in the 4 slots and one by one

-----/-----

memory default settings in bios (nothing changed)
epp profile 1066 5-5-5-15 1.9v
tested with memtest86+ 2.01 booted from floppy

-----/-----

q6600 at stock and 5 genie bios settings changed:

dram speed: 400/1066
cpu feature | thermal management control: disabled
cpu feature | ppm(eist) mode: disabled
cpu feature | c1e function: disabled
voltage settings | vcore droop control: disabled

and the results are:

first bar with serial 137 at dimm1: ok 5 passes at 1.9v 5-5-5-15
first bar with serial 137 at dimm2: ok 5 passes at 1.9v 5-5-5-15
first bar with serial 137 at dimm3: fail 7m at 1.9v 5-5-5-15
first bar with serial 137 at dimm4: fail 7m at 1.9v 5-5-5-15
first bar with serial 138 at dimm1: ok 5 passes at 1.9v 5-5-5-15
first bar with serial 138 at dimm2: ok 5 passes at 1.9v 5-5-5-15
first bar with serial 138 at dimm3: fail 7m at 1.9v 5-5-5-15
first bar with serial 138 at dimm4: fail 7m at 1.9v 5-5-5-15

slots 3 and 4 only stable with dram voltage control: 2.05v

-----/-----

q6600 at 400x9 with 1.45000v and 7 genie bios settings changed:

cpu clock: 400
dram speed: 400/1066
cpu feature | thermal management control: disabled
cpu feature | ppm(eist) mode: disabled
cpu feature | c1e function: disabled
voltage settings | cpu vid control: 1.45000v
voltage settings | vcore droop control: disabled

and the results are:

first bar with serial 137 at dimm1: ok 5 passes at 1.9v 5-5-5-15
first bar with serial 137 at dimm2: ok 5 passes at 1.9v 5-5-5-15
first bar with serial 137 at dimm3: fail 7m at 1.9v 5-5-5-15
first bar with serial 137 at dimm4: fail 7m at 1.9v 5-5-5-15
first bar with serial 138 at dimm1: ok 5 passes at 1.9v 5-5-5-15
first bar with serial 138 at dimm2: ok 5 passes at 1.9v 5-5-5-15
first bar with serial 138 at dimm3: fail 7m at 1.9v 5-5-5-15
first bar with serial 138 at dimm4: fail 7m at 1.9v 5-5-5-15

slots 3 and 4 only stable with dram voltage control: 2.05v

-----/-----

slots 1 and 2 memory working well
slots 3 and 4 are completely unstable
i'm 100% sure that it's dfi problem
compatibility problems or board broken
what you think?

[zsamz_]

its not the board
the board just loves powerchips it actually clocks powerchips better than any board i have

[knacky]

high straps requiring more dram volts and making system unstable
fsb at 400 and strap 266:667=1000 works with 1.904v stable
and fsb at 400 and strap 400:1066=1066 requires 2.050v unstable
seems powerchip ics works well under tight timings
strange behavior

straps:

200:667 (3:5)
200:800 (1:2)
266:667 (4:5) 1.904v stable
266:800 (2:3)
333:667 (1:1)
333:800 (5:6)
333:1066 (5:8)
400:800 (1:1)
400:1066 (3:4) 2.050v unstable