03-26-2003, 07:45 PM
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Editor Emeritus
Join Date: Aug 2006
Posts: 15,171
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Toshiba e750 Review... Already!
PDA Buyer's Guide already has a thorough review of the e750 written up, including benchmarks. They seem to like the unit, especially its new graphics controller that delivers eye-popping graphics performance, although it seems the processor speed benchmarks aren't as improved (does anyone know if the e750 is using a 100MHz or 200MHz bus with the new processor?) In any case, it seems that the e750 is a worthy upgrade to the e740.
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03-26-2003, 07:55 PM
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Intellectual
Join Date: Dec 2002
Posts: 245
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From what I hear, the new E750s are using the new Intel PXA255: so from that they should be 200Mhz bus :roll:
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03-26-2003, 07:59 PM
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Pupil
Join Date: Sep 2002
Posts: 13
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Using PXA255 doesn't mean that the memory bus has to be 200MHz.
E-3000 may not use 200MHz memory bus, but e750 has 200MHz memory bus for sure.
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03-26-2003, 08:02 PM
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Oracle
Join Date: Aug 2006
Posts: 864
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With the memory move numbers so low it must have 100mhz bus....with a 200mhz they should be double the 100mhz....
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03-26-2003, 08:03 PM
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Theorist
Join Date: Jun 2002
Posts: 279
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If you look at this Brighthand thread, you'll see that, in fact, the new processors are capable of much higher speeds when adjustments are made. There is discussion there about whether these 'adjustments' are merely overclocking, but I am inclined to say that they are not.
Current clock-speed enhancers don't seem to work with the e750 yet, but I believe (based on the above thread) that it's only a matter of time until new e750 owners can enjoy something like a 20% overall performance increase.
For now, though, my Jornada remains good company.
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03-26-2003, 08:17 PM
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Thinker
Join Date: Sep 2002
Posts: 405
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Some notes to consider:
"The PXA255 has a 200 MHz internal system bus, while the PXA250 has a 100 MHz system bus." Yup. I guess it does appear to have a 200mhz bus, according to the author.
Although the processor has changed, with an improved bus, the benchmarks and the Pocket MVP tests definitely do not show a jump, or improvement in the new PXA255.
-The author reviews the screen and indicates the screen is much brighter than the Axim or the Ipaq's. I'd be curious to see what effect this has on the battery life.
-If the author realy believes that the E750 is faster than current XScale processors, I'd be curious to know if PHM (Pocket Hack Master) can make that 400mhz, any faster.
-"Pocket PC 2002 OS was written for the ARM processor, so the XScale runs in compatibility mode without faster XScale native code)." I guess an improved system bus really does nothing to improve performance of the OS, which brings us back to our original argument; PPC 2002 is still not optimized for XScale.
Just a couple thoughts. I'd be curious to see other people's comments about the device. To me it just seems like an Axim with a WiFi CF Card, and a couple more megs. extra available to the user. Of course, the Axim is still lower than the $599 MSRP.
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03-26-2003, 08:23 PM
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Pupil
Join Date: Sep 2002
Posts: 13
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Memory benchmark result is not necessarily in proportion to the bandwidth of the memory bus, because other factors like CPU processing power and memory operating speed have to be concerned. So I guess the bechmark result is reasonable if 200MHz memory bus is used.
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03-26-2003, 08:35 PM
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Thinker
Join Date: Jul 2003
Posts: 381
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Quote:
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Originally Posted by entropy1980
With the memory move numbers so low it must have 100mhz bus....with a 200mhz they should be double the 100mhz....
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no.
it's 200MHz bus, and a 0.47 on the memory move is damn fast! And look at the memory allocation!
The reason it's not double is because the SDRAM chips are only 133MHz. So although it's not at it's full potential, it is noticably faster.
Another thing that boosts performance is the write back cache... which now works on the PXA255 (this is what the Asus has to make it so much faster!).
So to get an idea how fast this unit is, OC your e740 to 472MHz, and pretend it has a write back cache enabled (which is rumored to be released soon by a developer... lets you enable it on ALL xscale 250's... keep your eyes out).
To get an idea, enabling the write back cache on my zayo improves video about 50%... so if you usually get 15FPS on a video, you'd start getting 23FPS... if not more! Not sure how this works on the toshiba...
UPDATE: oh, and despite what the review states, reports from users are coming in that it's about HALF as bright as the 3900 when on max, but it's still very rich in colors... very comparable to the 1910 screen in terms of brightness...
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03-26-2003, 10:04 PM
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Neophyte
Join Date: Nov 2002
Posts: 8
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how can user say it's 50% as bright as an IPAQ as they dont even have the machine as it has not shipped yet ? strange, is it possible, people are still trying to argue that ipaq has the best screen ? just a thoughts ...
for one i will believe the reviewer as i'm sure he's fone a good fair review of the unit. 
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03-26-2003, 10:06 PM
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Pupil
Join Date: Jan 2003
Posts: 18
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...
This is the most minor of gripes... But could Toshiba have picked a different name for the thing? I've got a Casio E-750, and for me the amount of noise-to-signal has gone up when I do searches on Usenet, web forums and commercial resources. In the past, manufacturers went out of their way to make sure that there was never confusion between two competitors' products like this. It's like if Burger King tried to market a sandwich called the Bick Mack.
Like I said, a minor complaint. Nothing to lose sleep over.
-KKC, who wonders how much longer the *Paq naming convention will live on thanks to the Pocket PC...
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