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167 Posts

01-08-2008

Central Texas

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  • Message 11 of 16

Re: T500 review is up

2008-08-24, 0:10 AM

wjli2,

 

"I have posted my reasons...."

 

My question is this: Are your reasons just speculation on your part, or do you have some source of information that we don't know about? If so, please tell us what it is, so we can become believers too.

 

Centex

 

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134 Posts

01-02-2008

Pune, India

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  • Message 12 of 16

Re: T500 review is up

2008-08-24, 3:24 AM

Dear Centex,

 

If everything that members said, had to be justified or authenticated from other sources, then would it not make sense to just google for the information.

 

As far as I am concerned, I would happily use a post from wjli2 to authenticate what I am writing. I have learned much about ThinkPads reading his posts.

 

What you believe -- or don't believe -- is upto you. However, one can always evaluate a post and its content by testing it against well understood tenets of logic. So welcome, and enjoy this board -- even if you are a non-believer. What's the point in preaching the converted.

Sushil
_________________________________________________________________
ThinkPad T61, (7658CTO), T7500, Integrated Graphics, 320 GB HDD, 3 GB RAM, 1 GB Intel Turbo Memory, Vista (32 bit) Business
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3290 Posts

02-17-2008

Australia

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  • Message 13 of 16

Re: T500 review is up

2008-08-24, 11:16 AM

Okay let me put it simply for you:

 

-Notice how the T500 has perforation in a disc shape exactly over the Ultrabay Slim drive??? Do you think it is by coincidence it happens to look like that and that particular spot???

 

Heat Transfer 101: Stagnant Air has the lowest heat transfer coefficient of any naturally occuring material. This in fact is well used for insulation, i.e. foam insulation and passenger airplane windows. However, what is good for insulation is bad for cooling, when the old ultrabay slim drive is inserted into the T6x machines, there is little pocket of stagnant air between the drive and the magnesium chassis. This may not matter for the old ultrabay devices, however the new Ultrabay Slim bluray drive would run lot hotter. Heat soak is bad for the bluray blue diode. Having the perforation ensures that cooler circulating air can effectively cool the drive and no stagnant air builds up. This also the case with the Mg Chassis covering the harddrive, where more perforation is added, inorder to increase the airflow across the harddrive.

 

Material strength wise, a plain sheet metal has the lowest strength/weight ratio, while if you carefully perforate the metal in a specific way (i.e. honey comb like structure) then you would not decrease strength but the weight decreases, therefore the strength/weight ratio increases. While if you add cross members and extrusion members to the structure the bending strength of perforated members increases, these cross extrusion members are noticeable on the chassis top of the harddrive bay.

 

Do you also notice how the Mg chassis covering the PCMCIA and the ExpressCard slot did not change from T6x to the T5xx it is in fact exactly the same.

 

Therefore many of the changes in the Txxx chassis are due to better heat transfer consideration.

 

 

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167 Posts

01-08-2008

Central Texas

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  • Message 14 of 16

Re: T500 review is up

2008-08-24, 12:34 PM

wjli2,

 

"Okay, let me put it simply for you:

 

Notice how the T500 has a perforation in a disc shape..... "

 

Thank you.

 

Centex

 

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392 Posts

01-20-2008

Canada

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  • Message 15 of 16

Re: T500 review is up

2008-08-24, 22:07 PM

Centex,

 

I had marked Wjli2's post as an "Accepted Solution" because it had answered my questions and concerns.

 

Obviously, Wjli2 may not be 110% right. He is not David Hill, and, as such, we will never really know why Lenovo has made these changes unless Mr. Hill answers for himself.

 

I cannot believe that Lenovo would be so daft as to butcher a ThinkPad.

 

Wjli2 is one of the most knowledgeable people on this forum, and his post had made sense to me.

 

If you have a better explanation for the recent changes to ThinkPads, please let me know, and I will gladly mark it as the solution. For now, Wjli2 had addressed this issue.

 

 

 

 

Message Edited by LukeD on 08-24-2008 03:13 PM
MacBook Pro, with an aluminum unibody enclosure **As of September 15, 2008, our company has completely switched to Apple. Having used ThinkPad products for over 10 years, we had desperately tried to find just one reason to continue using these products, to no avail. We are of the view that ThinkPads are no longer premium products. We wish you the best of luck with your ThinkPad! Happy computing…**
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392 Posts

01-20-2008

Canada

316 Signins

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  • Posts: 392
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  • Message 16 of 16

Re: T500 + T400 reviews are up

2008-08-25, 21:00 PM
http://www.notebookreview.com/default.asp?newsID=4569
MacBook Pro, with an aluminum unibody enclosure **As of September 15, 2008, our company has completely switched to Apple. Having used ThinkPad products for over 10 years, we had desperately tried to find just one reason to continue using these products, to no avail. We are of the view that ThinkPads are no longer premium products. We wish you the best of luck with your ThinkPad! Happy computing…**
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