mT -5B *D* (Micron's new Revision results)

[Sentential]

I just picked up a stick for Overclocker550 for his A64 rig. In the process of testing the spiffy new Crucial stick from Bestbuy, I realized that something was horribly wrong.

It acted really funny and wouldnt boot. Later I read about Micron's new revision.....and turns out thats what I got.

I cant see the whole stepping totally, cuz this isnt gonna be my RAM, but Im confident its the new revision.

Good news is that it still clocks like a SOB. Bad news is that it wont boot with 2s like the old stuff did.

Im still testing is but it does my max on my NF7 totally stable. 246 @ 3-3-3-11 @ 2.9v

Ive heard that this stuff theortically clocks like BTD43 and goes to about 260 with 2.8v. However sadly, no amount of voltage will get any 2s into play.

Ill do some benching shortly.....

and its *single sided* 512MB stick

$150 with $15 in MIR. Might be a tasty find for you Intel / A64 folk

-Sen

 

[deathstar13]

i like the looks of it so far.
isnt much differance in 2.5 or 3.0 in bandwith ive seen.
now 2.0 is another story.
i do like how it runs the 3-3-3 part!
i cant get mine below 2.5-4-3-5 how high i dunno max ive tried that is 235 fsb

how about maxing it fsb if you can 3.0-4-4-11?
that sould give me some ideas on if its better than the bt-d43

 

[Merc Zephyr]

Hi Sentential

This runs a lot like the stuff I had. Just out of curiosity, what is the chip density on the sticks? (for example: 64M8, 32M8, 32M16, etc.)

 

[Sentential]

As I said......its maxed out my NF7 at 246. Im gonna play with the voltages to see how low it goes.


Telidine has a stick of the new revision too. He's runnin 255 @ 2.8v on his A64

 

[Sentential]

Not sure about the density. Its single sided 1 x 512 stick of Crucial, bought from BB ($150 with $15 MIR) along with a Pioneer DVD Burner for $100 after $60 in MIR

 

[Gautam]

Yeah, I gotta admit, the single-sidedness is nice. Cheap too I guess. I should stop bashing anything but BH5 now, lol. Personally, I think that this medium latency, high speed memory will become extremely easy to obtain in the directly before DDR2. The trends been heading this way, and it looks like its where its going.

 

[Merc Zephyr]

I think single sided 512mb would be 64M8 if it has 8 chips on the one side. I have an emerging theory that certain chip densities may be a factor in the ability to do tight timings. 3-3-3 at around 250 is very nice. I think the ability to run tRCD=3 at this speed or higher will make a system a little snappier than with hynix at 3-4-3 or even 2.5-4-3 running the same fsb.

 

[deathstar13]

Not sure about the density. Its single sided 1 x 512 stick of Crucial, bought from BB ($150 with $15 MIR) along with a Pioneer DVD Burner for $100 after $60 in MIR

SS sticks supposedly oc better correct? im rather sure they deliver better bandwith on the nf2 mobos.

any chance you know what timings ted is getting?

 

[Reefa_Madness]

I think single sided 512mb would be 64M8 if it has 8 chips on the one side. I have an emerging theory that certain chip densities may be a factor in the ability to do tight timings. 3-3-3 at around 250 is very nice. I think the ability to run tRCD=3 at this speed or higher will make a system a little snappier than with hynix at 3-4-3 or even 2.5-4-3 running the same fsb.

Just wanted to add this, since you mentioned it in the other thread (the one you and I sort of hi-jacked there for a little bit) that you thought that the EB series from OCZ uses the "32M16", well, based on the information linked to below, which is the AnandTech review of the PC3700 EB, it uses the "32M8" chips. I still think that you are probably on the right track about the density of these chips playing a part in how they are reacting.

http://www.anandtech.com/memory/showdoc.aspx?i=2057&p=2

As I mentioned earlier, it does appear that your chips may very well be the same thing that Sen has in this Crucial.

 

[Reefa_Madness]

Sen,

Merc Zephyr has 512 sticks of single-sided ram with Micron chips, but their numbering code is as follows: 46V64M8 (not 46V32M8 - note the "64" vs "32") and they have the MT -5B, but do not have the "C" that follows in the chips that you and I (and others) have. Can you tell at all what the Crucials have. That is why he was asking about the density.

 

[Sentential]

New plot twist I lifted the sticker. Its the same as Flapperhead's and mine....

Week 1-2

-5B C.

But WTF, it doesnt clock worth a damn. Voltage hasnt helped at all. Maybe it isnt a new revision, but rather horrible yeilds.....but how did I get a good set??

Ill test is some more, but so far its a dud. Maybe this explains why my PC2700 stick <that I returned> performed sooo horribly. hmmmm

and yes 8 chips

 

[Reefa_Madness]

Well, that does throw a wrinkle into the thought process, doesn't it.

By the way, what is Crucial's product code on that one...is it the one with a couple of 64s in the numbering scheme?

 

[Sentential]

MT 200420
CT6464Z40B.8T2

MT8VDDT6464AG-40BCB 200242- DDAA27AA0Y

512MB, DDR, 400, CL3



Damn.... Im gonna see what I can do. If not oh well. OC550 will be minus his RAM. I hope he likes his old CH5

 

[Reefa_Madness]

http://www.newegg.com/app/viewproductdesc.asp?description=20-146-541&DEPA=0

Is this the same stuff? It is on sale for the next couple of days for $78/512 stick, but has been under $100 at both Newegg and ZipZoomFly since all of the Micron chip started with flapper's review of the KVR.

Speaking of flapper's review, in it, on page #4, post #92, Clevor writes about having trouble with his Micron on his Abit boards (Intels, I believe), but then, you haven't with your set on your Abit. Just looking for patterns, but can not really nail it down, except maybe to just a bad set. Have you tested these individually, yet?

 

[Reefa_Madness]

Sen,

Just spotted a difference between the Newegg stuff and the stuff you have. Your stuff, the last part of the number starting with CT64 and ending in .8T2, well, Neweggs stuff ends in .8T (no "2"). It could be that you do have a newer revision, after all.

 

[Captain Turd]

I had a friend who ordered two sticks of that Micron newegg ram and got one -5B C and one -5B D. I have yet to see how it clocks.

 

[Reefa_Madness]

I would like to discuss this single-sided vs double sided thing on these chips just a little more. There is something that is just not meshing for me with respect to the Crucial. I have a dual pack of KVR 256 sticks with the Micron 46V32M8 and each stick is single-sided, with 8 chips on one side. I also have two Buffalo 512 sticks with the Micron 46V32M8, and each stick is double-sided, with 8 chips on EACH side.

How is it possible for the Crucial sticks to be single-sided, with 8 chips on one side and still be the 46V32M8? Merc Zephyr's sticks are single-sided, but they have the 46V64M8 chips on them. Sen, you said you lifted the sticker and saw the Week 1-2 and the -5B C and you indicated it had 8 chips, but you made no comment about the other line...did you see the 46V32M8 or are the Crucial the same as Merc Zephyr's and have the "64" chips. That is the only thing that would make sense, as far as them being single-sided 512 sticks, plus look at the product code...it has "64" all over it. Can you verify this? I believe that it will show these to be the 46V64M8 chips, not the 46V32M8. If that is the case, then their perfomance is somewhat consistent with what Merc Zephyr has gotten out of his. I need to go check flapper's thread and see exactly what Clevor reported having. I could have sworn he had single-sided Crucial as well, but I don't know if he ever stated for sure which markings his chips had.

 

[Sentential]

What I posted above is the product code. And yes I see alot of 64s in it.

 

[Reefa_Madness]

Sen,

I'm talking about the chip, dude. Can you verify that the ram has the 46V32M8 or the 46V64M8 chips?

 

[Sentential]

Its 46V32M8 from what I remember. but I can always re-check. Or lmao. I could just let you see the damn thing in person