Is this really PC133?

[hatboy]

I just bought a 64mb DIMM that's supposed to be PC133 (it's labeled PC133 on a sticker on the DIMM). I haven't yet tried it, since I'm away from my computer for a couple of weeks over the holidays. I'm bothered by the markings on the chips. They're labeled: MT48LC8M8A2 TG-10. If I'm not mistaken, the MT indicates Micron Tech. The -10 is what's bothering me. In the past, I'd always been under the impression that the number after the - indicates latency in ns. For example, I have some other PC100 Micron RAM that ends in -8C, which I always assumed meant 8ns. Is the RAM I just bought 10ns, or is Micron just making their labels confusing? If it is 10ns, did I get screwed, or is this DIMM "tested" (ie it just happens to overclock to 133 so we'll call it PC133)?

 

[SaturnX]

Check out the following program, it will tell you everything that is stored in the RAM's SPD, the program is in English, site in German, just scroll down to download ctSPD:

ctSPD

--Mark

 

[Vegito]

Where did you order it from ?

 

[Vegito]

Micron Datasheet for that baby


The

MT48LC8M8A2 comes in 100/125/133/143.. i didn't look at the whole sheet, but it looks like they dont have a -10... dunno download the pdf

 

[Big Lar]

Ussually -10 is pc100,( or pc66) cas3, Pc133 is 7.5 N's Pc100 is Supposed to be 8N's and great Pc133 is 7N's....

 

[hatboy]

I ordered it from mwave.com (it was $28). Thanks for the link.

 

[hatboy]

What's up Big Lar? Still got the Millennium II?

Update: I put the DIMM in an old system I have here at home (P233MMX on a 430TX board). It's working great at 66mhz. I downloaded ctspd, and it says that the DIMM is PC133. It's CAS3 and is apparently actually 7.5ns. I guess the markings are just weird.

 

[John]

MT48LC8M8A2 TG-10

That looks like PC66 to me

 

[medic]

Very good question, the MT48LC8M8A2 TG chips are very common, except they only come in three speeds...

-8E 10ns.
-75 7.5ns. CAS3
-7E 7.5ns. CAS2
DataSheet

Edit:
On the actual chips it should be MT48LC8M8A2 TG-8E for 10ns. or if it's on the chip and not a sticker then you have a rare first revision/stepping.or a Revision A PC66 as John mentioned.

 

[hatboy]

CRV- The chips themselves are labeled MT48LC8M8A2 TG-10. The sticker just says PC133.

 

[medic]

In that case you have most likely a Revision A or first stepping as I mentioned, you could email Micron and they should send you the Revision A PDF where you might find the -10 designation. (they have done for me in similar situations)
This is all academic, if it runs nice at 133MHz. I would be satisfied! (when you try it)