safe micron DDR3 voltage

[camouflage]

sorry to hear about your loss
so now they degraded or are they dead?
do they still boot?
you only used them for 2 weeks? or only for 2 weeks with high vdimm?

-40 celsius works without a hitch, dont know about less
i know ddr1 and ddr2 dont like to boot at temperatures below -80 degrees or so... ask jmax, hes the king of frozen dram

Used them for 2 or 3 month, they were not dead but instable caused by degration. 2.23 Vdimm was used only for benching, but after that I went into stability problems.

I do not own the sticks anymore so I can't tell more details.........

[techno_17]

Used them for 2 or 3 month, they were not dead but instable caused by degration. 2.23 Vdimm was used only for benching, but after that I went into stability problems.

I do not own the sticks anymore so I can't tell more details.........

What slots, were used for that vcore? Vdimm read on BIOS?

Regards,

[camouflage]

What slots, were used for that vcore? Vdimm read on BIOS?

Regards,

Vdimm measured with multimeter, can't remember the slots.....

[saaya]

only 2.23v... are you sure it wasnt 2.32v?
but even 2.32v would be rather low for degradation...
how did you cool the mem? passive? did you have a fan on top of the mem?
where did you meassure vdimm?

[M.Beier]

sorry to hear about your loss
so now they degraded or are they dead?
do they still boot?
you only used them for 2 weeks? or only for 2 weeks with high vdimm?

-40 celsius works without a hitch, dont know about less
i know ddr1 and ddr2 dont like to boot at temperatures below -80 degrees or so... ask jmax, hes the king of frozen dram

Well actually, I think you need to read on your micron specs... Can you please find that statement on their page?
Maybe your right, but then they've changed specs over night..... But correct, they do operate with cold temperatures, but not officially.... Exactly like the micron rated voltage isnt what they can handle as max....

[saaya]

i think you need to finally stop threadcrapping with your "know it all" attitude.
and then maybe read my post again, i didnt say anything about the official micron specs.

[techno_17]

Vdimm measured with multimeter, can't remember the slots.....

Sad to hear this, degrade with "only" 2.23v.

More luck with the next kit

Regards,

[saaya]

i updated the first page

[SergeRY]

sorry to hear about your loss
so now they degraded or are they dead?
do they still boot?
you only used them for 2 weeks? or only for 2 weeks with high vdimm?

actually they still boot, just errors up to my armpits. actually, memtest and getting into windows = guaranteed fail at this point.

2 weeks @ ~2.15V Vdimm, set in Bios. No multimeter, I believe Everest read a little higher (don;t remember )

-40 celsius works without a hitch, dont know about less
i know ddr1 and ddr2 dont like to boot at temperatures below -80 degrees or so... ask jmax, hes the king of frozen dram

damn, I was hoping for lower. I am going to look into this though. I am intrigued by the ram pots on XS

[M.Beier]

3 days running 2.45v Cellshock D9GTR @ TaPaKaH
... He ran 2.4v none stop for ALONG time...

2.75-2.8v should be good for benching... D9GTR, please notice this...

[saaya]

3 days running 2.45v Cellshock D9GTR @ TaPaKaH
... He ran 2.4v none stop for ALONG time...

yeah, he tried to kill the kits to rma them cause he didnt like how they oc
seems like some kits can take high vdimm of 2.4v 24/7...

2.75-2.8v should be good for benching... D9GTR, please notice this...

for some kits... some will already die after hours of benching with 2.4v, some apparently with even less vdimm than that.

[M.Beier]

yeah, he tried to kill the kits to rma them cause he didnt like how they oc
seems like some kits can take high vdimm of 2.4v 24/7...


for some kits... some will already die after hours of benching with 2.4v, some apparently with even less vdimm than that.

Just posted my experience, and another death case..

I dont know how he uses his RMA, and cant see how this is my business neither... I havent used RMA since 2006 for the record..

[saaya]

another death case?
so tapakah did finally kill his memory?

[M.Beier]

another death case?
so tapakah did finally kill his memory?

Yes..

[saaya]

do you know at what vdimm?

[pentium777]

What's wrong with the first white slot ? Why do you find it strange ???

Here are the pics of the modded dominator airflow with 3 delta fans you asked .

As you can see , the delta fan are taller from the original corsair used (28mm vs 20mm)

PS . Dust everywhere ... i have to clean it soon ...

Fan is FFB0412VHN : http://www.bravoelectro.com/pdf/FFB40X28.pdf
9500 rpm & 15.79cfm each one .

42db noise LOL! must sound like an airplane ready to take off

[saaya]

Yes..

i talked to tapakah today, his sticks arent dead... hes still running them 24/7 at 1800 665

they degraded tho and dont run 1800 876 with 1.7-1.9v anymore.
sounds like micron ddr2 degradation on his kit... interesting...

[Infa]

Yeah, I must also report Degradation on my Sticks...

Bought them in Feb, been running them since 24/7

First 1.9 at CL7 were no problem now they want moore!

allways got it around 2v, and some benching at 2.28 at highest, but for short whiles...

they managed CL7 ddr2000 at 2.28 pretty good before, today i just wanted to try it on this p5e3, and WHAT? not even with 2.40 did they enter the OS.. omg.
2.30 were no post... they have gotten pretty bad i guess 2.12 atleast are needed for some game stability at ddr1870 CL7.

Lately i've been using around 2.1v, but i just raised it couse they were instable... allways had it at 2.0 - 2.04 or even less.
what to do what to do , and no saaya wont RMA them
i probably will buy the blue ones instead, JNL chips, seems to require some less voltage too.

regards.

[saaya]

infa, try them in the same old board as before, maybe its just the new board that either sucks, or, doesnt work well with this particular kit.
ive noticed a lot of weird compatibility problems like this. some kits will clock way better in some boards than in others...
since i bin them with a big margin left to oc, so far all kits seem to work on any board, even if they are a bad match, but when ocing you can def tell a difference from one board to another.
just ask 3oh6 and benchzowner, they made the same experience, some kits suck on one board and rock on another, then another kit will rock on the first and suck on the second...
ddr3 is still quite freaky and "untamed" at high speeds and voltages

here is a graph about some tests i did:



left is onep5k3 deluxe board, right is another p5k3 deluxe board.
colors are sticks, top lines are cas8, center cas7, bottom cas6
memory divider and strap were always the same, same bios, same everything.
you can see both boards are limited for cas8, but the board on the right is limited way more than the left.
and it doesnt just cut out at one frequency... it clocks the mem worse at cas8, and even worse at cas7.
note that the right board clocks worse with cas7, even at 1.7v!
and note that there is not always a strict line that no stick of mem will be able to pass!
some mem can clock higher, but not much, they will all be greatly limited in cas8 and slightly limited in cas7.
I hope this helps

oh yeah, that too, make sure you use high enough chipset voltage, and use the slots 2 and 4.

i made a test on an asus maximus extreme regarding channel 1 and channel2.
very interesting results, on channel1 more chipset voltage than 1.5v didnt really help, and i could only use rather low vdimm. more vdimm and it became unstable.
plus the vdimm tolerance window was very small.

channel2 worked way better, the vdimm tolerance level was very wide and worked from lower to higher vdimm stable than channel1.
with channel 2 i could push 50mv more vdimm and still have it stable, compared to channel1, which obviously allowed me to clock the memory higher.
not much, only 25-50mhz, but not bad...

plus on channel1, there are weird compatibility problems when running dual channel... the sticks have a higher chance of not matching well as a pair.
ive seen as high as 300mhz difference from max stable in channel1 compared to channel2.

i hope this helps you to maybe get your kit stable at high speeds again infa.
i cant really believe that 2.28v damaged your kit...

EDIT: here is a graph:
1 = no boot
2 = freeze
3 = memtest/orthos errors
4 = memtest/orthos stable

[I34z1k]

Very interesting results... I don't understand the last graph though, the key is what, vDimm? But x-axis is also vDimm?

[BenchZowner]

Very interesting results... I don't understand the last graph though, the key is what, vDimm? But x-axis is also vDimm?

x = Vddr ( Vdimm )
y = stability ( check the following legend ):

1 = no boot
2 = freeze
3 = memtest/orthos errors
4 = memtest/orthos stable

[saaya]

yes, and the colors are vmch, yellow = 1.5v orange 1.6, dark orange 1.7 and red 1.8v
that way you can see how more vmch makes higher vdimm stable in dual channel, which in return means higher stable mem clocks

EDIT: one more thing i noticed...
sometimes, the sticks will work almost stable at least say 1850 mhz... but when you go lower to 1825 or even lower... the stability gets worse!
that happens when a stick is close to beeing saturated on vdimm and doesnt like any higher vdimm.
the lower you clock it, the less vdimm it will like, and the more unstable it will become with the same vdimm.

[I34z1k]

Ah That explains. Cool thanks

[Gautam]

I think I just killed a pair of Kingston D9GTR at 2.12v. No joke.

[dinos22]

what board are you on

do you have DRAM VTT as an option on it?