A8Js BIOS 205 Question - What's a Tj85 Merom CPU?

Posted 10/09/2006 at http://support.asus.com/ is BIOS version number 205 for the A8Js. Latest version is 207 posted 11/09/2006. In the very brief description for BIOS 205, is the following statement;

Code:

Description 	BIOS 205
In order to support Tj85 Merom CPU, add a new thermal policy.

My question is what the heck is the Tj85 Merom CPU?

 

core2 duo.........

 

.. right.. WHICH Core 2 Duo is the Tj85?? It doesn't match up with Intel's CPU numbering for the C2D.

BTW, I'm sure that Asus engineering added Core 2 Duo support PRIOR to BIOS 205. I count 203 and 204 existing before 205, and the A8Js was released as a Core 2 Duo laptop.

 

Interesting - a google search returns quite a few pages, mostly from Asus but some from brands like Toshiba with similar BIOS updates.

~ Brett

 

I did google Tj85 and Merom before I posted, and the hits all referred to the same Asus A8 BIOS "release notes" blurb. But googling Tj85, intel, and core (better idea, thanks Nrbelex), comes up with a bunch of hits, which after reading, seem to suggest, (it's not stated anywhere directly), that the Tj85 is actually the Intel Core Duo T2050 1.6ghz, or Core Duo T2250 1.7ghz. Maybe it's a low end OEM only CPU. If you search Intel for T2050 or T2250, it comes up with only ONE hit, a PDF document that compares all Intel laptop CPUs. So the answer must be that the Tj85 CPU is the low end, slower, T2050/T2250 Core Duo CPU. (The "release notes" blurb must be incorrect in stating Tj85 Merom..) Wonder why they updated the A8Js BIOS to support a Core Duo CPU? Oh well..

 

this is the best I got.

The T means low voltage yonah or merom.

j85 doesnt mean anything
At first I thought it must mean the 533 mhz meroms but it must mean the lv and ulv versions. They are not c2d just to confuse you they are actually still called core duo and core solo but they are new.

 

Obviously unless someone can post a link to official Intel documentation of the model number, we're guessing. So my opinion/comments are..

I realize we're guessing about a strange Tj85 CPU reference, but if it follows Intel Core Duo model numbering notation, then it can't mean low voltage. In Core Duo (Yonah) terminology L means low voltage, (there are 3 low voltage Core Duos, L2300 1.5ghz, L2400 1.6ghz, and L2500 1.8ghz), and U means ultra low voltage, (there are 2 U Core Duos, U2400 1ghz, and U2500 1.2ghz). There are no L or U Core 2 Duo (Merom) CPUs as of now. The Core 2 Duo in the A8Js is the T7200 and it's not LV or ULV. My guess is that T stands for Cen Trino - which means standard (not LV or ULV), mobile CPUs.

Of course it does. Just because we don't know what it is, doesn't mean it doesn't have notational importance.

You must have meant 533mhz FSB Yonah (Core Duo or Solo) CPUs. There's only one 533mhz Merom (Core 2 Duo) CPU, the T5200 1.6ghz. But if you meant you think that Tj85 must mean the 533mhz FSB Yonah Core Duo CPU, then I agree, as I stated in my prior post. However, again, it does not mean LV or ULV Core 2 Duo CPUs, (there are none), or LV or ULV Core Duo CPUs, in my estimation. If it is the T2050 and T2250, they are identical, (voltage, cache size), to the other standard voltage Core Duos, T2300/2400/2500/2600, with the one exception of that they do have a slower FSB, of 533mhz vs 667mhz.

I already stated that I am guessing that the Tj85 are not Core 2 Duo CPUs. I'm guessing that they are T2050/2250 which are Core Duo (not Solo) CPUs and were released 4 months after the T2300/2400/2500/2600. So it's true that they are later releases of the Core Duo line, but they were out 3 months before the release of the Core 2 Duo CPUs. Hardly new. See;

http://www.intel.com/products/processor_number/proc_info_table.pdf
http://en.wikipedia.org/wiki/List_of_Intel_Core_microprocessors
http://en.wikipedia.org/wiki/List_of_Intel_Core_2_microprocessors

 

the tj85 is intel T5450 prosessor. HP uses the same processor on their laptops