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what are real world differences going to be between these 2?

by Heboil / November 26, 2004 2:49 PM PST

Intel Pentium M Processor 735 1.7GHz (32KB L1, 2MB L2 cache)

and

Intel 710 Centrino Mobile 1.5GHz (32KB/8KB L1, 1MB L2 cache)

They are on two different machines I am considering (amongst many I have considered). Other specs on the machines are somewhat of a non-issue as they are too close to each other. Both units would have 512 MB of RAM and 64 MB dedicated video. They are both Toshibas.

I am looking for as much power for office-type applications and multitasking as possible (within a specified budget)...and battery life and portability. I could go to a P4 HT or AMD 64 for a little less in cost, but I have found those machines to be quite heavy to carry to and from work on a daily basis.

Thanks.

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Re: what are real world differences going to be between thes
by Ryan T / November 26, 2004 9:16 PM PST

The difference is precisely what you quoted. The L2 Cache is different. The first one is a Dothan chip, it has twice the Level 2 Cache (extremely fast ram that can be accessed by the processor QUICKLY) compared to the other one.

So in all cases, in any application, the first one is going to be faster, #1 because it's got twice the cache, and #2 because it is 200 MHz faster. In the long run you'll be happy you popped for the Dothan chip.

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i doubt it is twice as fast...
by Heboil / November 27, 2004 4:07 AM PST

I understand that it is twice as much, but is the machine twice as fast? Impossible. What I was really looking for was real world speed increases...how much faster should I be anticipating. It wouldn't be a tough decision for me if they both had regular screens where I will be buying, but the Dothan has the Trubrite screen...and I have issues with glare from them. The banias chip will most likely be slower, but with the screen I would rather have, I would be willing to take a small hit in performance to keep the other things I want.

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Where did I say it would be 2x faster?
by Ryan T / November 27, 2004 4:24 AM PST

I didn't say that. What I said is that it has twice the amount of Cache.

No, I'd estimate 25% faster.

In no way was I implying that the Dothan machine would be twice as the Banias. Until yesterday, I was considering between the two. And because of budget and opportunity, I chose a Pentium M 715 1.5 GHz, the lowest GHz Dothan.

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ooops...my mistake
by Heboil / November 27, 2004 1:38 PM PST

I thought you did (between the twice as much cache and the 200 mhz faster...I glanced over it as 2x as fast). Would the 25% speed increase be likely to be seen over all applications, or just certain ones?

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Re: ooops...my mistake
by Ryan T / November 27, 2004 8:02 PM PST
In reply to: ooops...my mistake

Well unlike hyper-threading or 64-bit processing, I think cache is something that all apps can see benefit from.

The reason most people say Athlon 64s are so fast isn't becuase they're 64-bit--most people don't use that feature at all. It's because they have greater cache and front side bus than almost any other architecture out there.

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Re: ooops...my mistake
by KenSanramon / November 29, 2004 12:47 PM PST
In reply to: Re: ooops...my mistake

The doubled L2 system cache of the Dothan Pentium M will allow to have 2x the high speed on chip cache (it is on the cpu itself) to access web pages, open frequently used programs faster, etc.

I have the Banias 1.4 Pentium M and it is fine but I bought it before the Dothans came out so you are foregoing the current technology for only $50-$75 if you choose the Banias cpu with 1mb L2 cache now.

Also, if you don't want the Trubrite LCD you can order a custom M30/M35 at Toshiba.com and that is a better choice anyway....

Also, the HPZT3000 / Compaq X1000 I chose narrowly over the Toshiba M35S320 model at the time (which did not have Trubrite in May 2004) is very comparable and runs cooler (feel the area around the touchpad area for the Toshiba M30/M35 -- older models at least got very warm in this area as the hard drive is under there).

Also, many prebuilt Toshiba M30/M35 models now have only shared video memory -avoid this at all costs -- you can get a custom M30 online with 64mb dedicated video memory still if you want the Toshiba -- or see X1000forums.com and hpshopping.com for the alternative (15.4" LCD -- Briteview or non-Briteview LCD, 64mb dedicated video max also -- 6.5 pounds to Toshiba M30/M35 6.2 pounds).

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