A while ago I bought the PocketPC running on a iPAQ 2215, which sports
the PXA 255 XScale 400Mhz processor, and is estimated when running
ChessBase's Pocket Fritz 2.0 to have an Elo of 2511 (SSDF) at 3 minutes
per move.

I'm starting to beat it more often than I like, so I'd like to upgrade
to a faster handheld / PDA. Probably I would like to stick to the
PocketPC platform rather than PALM.

My question: what would be the corresponding Elo for the latest
fastest processor on a PocketPC handheld, which is the iPAQ hx2750's
624MHz processor (Intel XScale PXA270 processor running at 624MHz)?

The XScale PXA270 processor running at 624MHz appears to be at least
twice as fast as the PXA 255 XScale 400Mhz processor, which would imply
75 to 120 more Elo points over the 2511 SSDF Elo (3 min/move), but I
need a more precise answer.

If there are any electrical engineers out there, if somebody can
estimate how fast the latest XScale mP is compared to desktop
microprocessors, one can work backwards and figure out the ELO from the
published SSDF desktop software ratings. Somebody a while back
estimated the iPAQ 2215 handheld was equivalent to a second generation
Pentium at around 100-200 MHz.

Thanks,

RL

http://www.mobiletechreview.com/iPAQ_hx2750.htm

Features at a Glance

As mentioned, the hx2750 has a 624MHz processor, which is currently the
fastest you can get on a Pocket PC, 128 megs of RAM, 128 megs of ROM
(currently the most RAM and flash ROM you'll find on a Pocket PC),
Bluetooth, WiFi 802.11b, an SD slot that supports SDIO, a CF type II
slot (accepts type I and II cards) and a biometric fingerprint scanner
for security.

In the box you'll find the PDA, stylus, removable flip cover, printed
guide, software CD, world charger and a cradle.

Processor and Horsepower

Yeehah! This thing is fast. In fact, it's gotten the highest Spb
Benchmark rating of all Pocket PCs to date. While speed isn't
everything, given that most 400Mhz and higher Pocket PCs get the job
done well for average users, power users will appreciate the speed
which translates into fast menu and window response, excellent gaming
and very good video playback. The iPAQ uses the Intel XScale PXA270
processor running at 624MHz, which is currently the latest and fastest
PDA processor on the market. The hx2750 has 128 megs of RAM with 123.53
available for your use (used both for program execution and storage)
and 128 megs of flash ROM where the OS lives and 80 megs of which is
available for program and file storage as the iPAQ File Store. While
RAM is faster than flash ROM, it consumes power even when the unit is
turned off. This means that RAM, though faster, is less power efficient
and will be wiped out if your device runs completely out of power
(that's why you should always backup your Pocket PC using ActiveSync or
a 3rd party backup program). 128 megs of RAM and ROM is currently the
most you'll find on a Pocket PC and will suit heavy hitters who install
lots of apps and data on their devices. Of course you can always store
large files such as videos and MP3s on SD or CF storage cards.

HP iPAQ hx2750 Dell Axim X50 (520Mhz, Max mode, NON VGA model) Dell
Axim X30 624Mhz, Max mode) HP iPAQ hx4700 (624MHz VGA) HP iPAQ rx3715

Spb Benchmark index 2209 1803 2086 1621 1545
CPU index 2564 2070 2474 2412 1529
File system index 1563 1287 1452 1477 1387
Graphics index 5683 4653 5295 890 2956
Platform index 1627 1350 1506 1298 1422
Write 1 MB file (KB/sec) 1887 1548 1856 1854 1422
Read 1 MB file (MB/sec) 37 29.3 33.3 33.6 23
Copy 1 MB file (KB/sec) 1881 1549 1860 1848 1392
Write 10 KB x 100 files (KB/sec) 1154 1039 1157 1195 1066
Read 10 KB x 100 files (MB/sec) 11.7 10.7 11.4 11.7 10.2
Copy 10 KB x 100 files (KB/sec) 943 874 945 986 960
Directory list of 2000 files (thousands of files/sec) 29.9 22.8 26 26.4
37
Internal database read (records/sec) 2228 1709 2003 1972 1329
Graphics test: DDB BitBlt (frames/sec) 404 288 333 63 388
Graphics test: DIB BitBlt (frames/sec) 41.9 33 40.9 10 29.8
Graphics test: GAPI BitBlt (frames/sec) 1015 901 952 122 392
Pocket Word document open (KB/sec) 59.4 40.9 50.9 39.2 54.6
Pocket Internet Explorer HTML load (KB/sec) 8.68 8.36 8.06 8.51 10.2
Pocket Internet Explorer JPEG load (KB/sec) 302 272 296 247 220
File Explorer large folder list (files/sec) 741 604 708 652 763
Compress 1 MB file using ZIP (KB/sec) 376 273 342 322 312
Decompress 1024x768 JPEG file (KB/sec) 926 752 918 918 551
Arkaball frames per second (frames/sec) 333 277 313 97.4 158
CPU test: Whetstones MFLOPS (Mop/sec) 0.119 0.097 0.119 0.119 0.084
CPU test: Whetstones MOPS (Mop/sec) 86.6 70.4 86.6 86.6 55.2
CPU test: Whetstones MWIPS (Mop/sec) 7.81 6.39 7.8 7.81 5.44
Memory test: copy 1 MB using memcpy (MB/sec) 122 104 118 117 59.5
--
for PALM handhelds:

http://www.hiarcs.com/competitor_comparison.htm

http://www.hiarcs.com/phresults.htm


PDA device Type/Clock Speed Hash Table Size HIARCS Palm Chess Rating
(est. SSDF Elo)**
Palm Tungsten T3/C/T5 and Palm LifeDrive ARM/400Mhz 8192Kb 2601*

Palm HIARCS is now suitable for all players from absolute beginners to
strong
Grandmasters (750 Elo - 2600+ Elo). Figures would be even higher on the
USCF scale.


Key features:
+ At least 200 Elo stronger than *ANY* other Palm chess software and
way stronger
than ALL Pocket PC chess software (95 Elo stronger than Pocket PC Fritz
2)
+ Numerous beginner and intermediate levels offering a challenging
learning
experience for all players.
+ Built in coach teaches moves and watches over your games to point out
mistakes and
offer hints/advice. Even post game the coach can find errors and show
where a
mistake was made.
+ Built in Elo/BCF monitor rates your play and measures your progress.
+ Interfaces with desktop software like Chessbase through PGN format
import and
export (single game).
+ Unlimited levels and time controls including Casual, Blitz, Active,
Fischer and
Tournament.
+ Analysis capabilities for the serious players including Next Best
moves.
+ Detailed Engine room to customise HIARCS playing style, learning and
much more.
+ Numerous free large opening books with the latest theory helping
opening study and
preparation.
+ High resolution, colour graphics with 2D/3D effect chess piece styles
and multiple
board sizes.
+ Supports Palm OS 3.5 or later, 160x160, 320x320 HiRes and Sony HiRes
screen
resolutions, and comes with 68K and ARM engines.

Here's what I concluded:

Based on the "Spb Benchmark Index" for CPU, which you can get here and
compare various models,
(http://www.spbsoftwarehouse.com/prod...ompare.php?en),
the HP iPAQ hx2750 is about 40-60% faster than the HP iPAQ 2215 running
the PXA255 400 MHz chip. The 40-60% figure is not the overall
performance (graphics, FPS, read/write etc) but just the CPU integer/
MFLOPS figure, which is where the bulk of the chess engine computing
occurs.

Because a 100% increase (doubling) in speed/performance in chips equals
roughly 75-120 Elo points more, a 40-60% increase in CPU performance is
about 50 points more Elo.

So the HP iPAQ hx2750 should, on Pocket Fritz 2.0, have a SSDF Elo of
2561 (180 s/move).

RL


raylopez99 wrote:
A while ago I bought the PocketPC running on a iPAQ 2215, which sports
the PXA 255 XScale 400Mhz processor, and is estimated when running
ChessBase's Pocket Fritz 2.0 to have an Elo of 2511 (SSDF) at 3 minutes
per move.

I'm starting to beat it more often than I like, so I'd like to upgrade
to a faster handheld / PDA. Probably I would like to stick to the
PocketPC platform rather than PALM.

My question: what would be the corresponding Elo for the latest
fastest processor on a PocketPC handheld, which is the iPAQ hx2750's
624MHz processor (Intel XScale PXA270 processor running at 624MHz)?

The XScale PXA270 processor running at 624MHz appears to be at least
twice as fast as the PXA 255 XScale 400Mhz processor, which would imply
75 to 120 more Elo points over the 2511 SSDF Elo (3 min/move), but I
need a more precise answer.

If there are any electrical engineers out there, if somebody can
estimate how fast the latest XScale mP is compared to desktop
microprocessors, one can work backwards and figure out the ELO from the
published SSDF desktop software ratings. Somebody a while back
estimated the iPAQ 2215 handheld was equivalent to a second generation
Pentium at around 100-200 MHz.

Thanks,

RL