bus speeds in T41

[Jiti]

I have a T41 1.6 GHz processor speed / 1.59 GHz bus speed. I would like to know if I work on a T41 1.6 GHz Processor speed but 233 MHz bus speed, will this affect the speed of my computing in any way? I am basically worried about some simulations program that I run using matlab. Thanks for your interest.
Jiti

[Jiti]

Let me answer the question myself in case someone else is looking for the same info. I just degraded from the bus speed of 1.59 GHz to 233 MHz and so far I havent seen any difference. I even bench marked the speed of some programs and they turn out to be exactly the same between the two systems.
JIti

[smugiri]

I have a T41 1.6 GHz processor speed / 1.59 GHz bus speed. I would like to know if I work on a T41 1.6 GHz Processor speed but 233 MHz bus speed, will this affect the speed of my computing in any way? I am basically worried about some simulations program that I run using matlab. Thanks for your interest.
Jiti

It might be just me but I thought that the T41 had a 400MHz bus speed with 533MHz chips.

Is it really 1.59 GHz?

[JHEM]

The system (frontside) bus on all T40, T41 and T42 systems is 400mhz and is NOT readily adjustable.

Jiti, I don;t know what you're referring to when you speak of "degrading" the bus speed.

Care to elaborate?

Regards,

James

[draco2527]

The system (frontside) bus on all T40, T41 and T42 systems is 400mhz and is NOT readily adjustable.

Jiti, I don;t know what you're referring to when you speak of "degrading" the bus speed.

Care to elaborate?

Regards,

James

IMO:

I think he is talking about "stepping" the processor down....lowering MHZ's!....AKA...Speed-Step......

BUT

After reading the post about thirty times...I am starting to think he is talking about two lappys...

[smugiri]

The system (frontside) bus on all T40, T41 and T42 systems is 400mhz and is NOT readily adjustable.

Jiti, I don;t know what you're referring to when you speak of "degrading" the bus speed.

Care to elaborate?

Regards,

James

IMO:

I think he is talking about "stepping" the processor down....lowering MHZ's!....AKA...Speed-Step......

BUT

After reading the post about thirty times...I am starting to think he is talking about two lappys...

I think that JHEM means that you can clock down processor speeds but it is a lot harder to clock down bus speeds.

And irrespective of whether you can clock bus speeds down or not, I do not think that there are any Thinkpads out there as of Mar 2006 with a bus that runs at 1.6GHz. In fact, I do not think that there is any consumer machine out there with a 1.6GHz bus.

[Jiti]

Wow so many responses? Thanks to you all.
I dont know if I am right in assuming what I am referrring to is bus speed or not. I have two T41s, when I view system properties of my computer, in one
I see :

Computer 1
processor 1600 MHz
1.59 GHz, 1.00 GB RAM

and in the other, I see:

Computer 2
processor 1600 MHz
598 MHz, 1.00 GB RAM (sorry, it wasnt 233 MHz as I wrote previously)

I was assuming the underlined figure is bus speed. Quite likely I am wrong,
and if so please tell me what this is.
So when I ported my HD from Comp1 to Comp2, I assumed that I
worked on lower speed bus (thats what I meant by degrading).
But when I just checked the bus speed(or whatever that underlined thing means) of the two systems, I found
that they also got exchanged! (I mean the underlined figures) and
perhaps this explains why I see no difference in speeds.
Jiti

[lithium726]

OK, the 1600MHz is the processor string. This is how the BIOS identifies the intel chip in your system. the speed below that is the actual clockspeed of the chip, you are basically seeing speedstep in action when you see ~600mhz. speedstep will dynamically clock your chip based on loading, which is why you never see a difference in speed - when you need it, its there.

and the 1.59ghz is simply due to the bus being something like 99.5MHz (398MHz effective, the bus is quad-pumped) so instead of 100x16, its 99.5x16... so there is a slight clockspeed variation

and in case none of that made sense.. heres how this whole thing works. the base clock of the entire system is 100mhz, in the case of the T41. The front side bus is quad pumped, so 100x4 = 400mhz. the processor is 100x16 = 1.6ghz. Hope this helps!

[lithium726]

ugh. double post. sorry.

[JHEM]

ugh. double post. sorry.

No problem as you nailed the explanation in both!

Regards,

James