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FASTER THAN A SPEEDING BULLET
pocketnow.com last
reviewed XCPUScalar in June 2004. A little over
2 years later what has changed?
Support for more devices including Windows Mobile
5.0-based devices
Underclock as low as 104MHz and overcook as high as
728MHz depending on your XScale CPU
Autorecovery override
I FEEL THE NEED FOR SPEED
So, how does it work? Before I give you my overall
opinion, let’s take a look at the various options
and settings available in XCPUScalar 2006.
Figure
1:
'Speed' is the main tab in XCPUScalar. From here you can
lock in a speed for your CPU. My Treo 700w runs standard
at 312MHz.
Figure 2: Although XCPUScalar supports 240×240
devices, the menus are not well designed for this screen
size.
This is the rest of the 'Speed' tab which features
the Auto Scale with CPU load, TaskBar Meter and color
options.
You may notice the graphic glitch in the screenshot
above. I found several of these while using the program.
Considering the Treo 700w has a very slow video
processor, I am willing to give XCPUScalar the benefit
of the doubt. I have not seen these glitches in any
other program on my Treo, though.
Figure 3: At the top of the screenshot, you can see
the TaskBar CPU meter.
Figure 4: Fortunately, you can change the text and
background colors of the TaskBar meter so it matches
your Today theme.
One of the best features of XCPUScalar is the 'Auto
Scale with CPU load' option. This allows you to let the
program decide the best speed for your device based on
what it is doing and how hard the CPU is working. The
concept is, most applications do not stress the CPU. So,
you should be able to get better battery life out of
your device by underclocking the CPU most of the time
and only speeding it up when it is needed. Let’s take a
look at the 'Advanced' tab where the settings for Auto
Scale are located.
Figure 5: You can set the
speed for your CPU at various load settings.
In this
screenshot, if the CPU load is 15% or less, the
processor will run at 208MHz.
Figure 6: Here is the rest of the 'Advanced' tab.
You can define speeds for various CPU loads, which is
VERY nice.
Figure
7: The 'Meters' tab shows you various information about
your device.
Here you can see the CPU load, battery
life, storage memory…
Figure
8: …and program memory. Notice that the TaskBar meter
also reports the current processor speed and CPU load.
Figure 9: The file menu gives you a few more options
including the ability to automatically start XCPUScalar
after a soft reset.
Xcpuscalar 2 85 Seriale Shqip
You will also notice the 'Ignore Safety Checks on Start'
option in the above screenshot. Normally, XCPUScalar
performs a safety check when it is started or after a
soft reset if you have it set to start automatically.
The safety check makes sure that your device will boot
at the speed you have chosen. If it does not boot,
XCPUScalar will return your device to the stock clock
speed. If you are feeling brave, the 'Ignore' option
lets you bypass those safety checks and force XCPUScalar
to run at the speed you have chosen.
Another built-in safety check runs while the device
connected to a desktop PC using ActiveSync. XCPUScalar
will automatically return your device to the stock clock
speed during the ActiveSync session to prevent
conflicts. After all, ActiveSync is quite capable of
messing up on its’ own… it certainly does not need any
help!
TAKE IT TO 11
I used XCPUScalar for several weeks on my Treo 700w.
Unfortunately, I was unable to get SPB Benchmark to run
on my device so I will not be able to give you
scientific speed results. This was not XCPUScalar’s
fault because SPB Benchmark would not run after a hard
reset even before I installed XCPUScalar. So, I will
give you my subjective 'feeling' on how my device
performed while running XCPUScalar.
I found that using the Auto Scale function worked
splendidly and I used that most of the time.
Approximately 80% of the time, XCPUScalar was able to
downclock the CPU to 208MHz. This resulted in a battery
life bonus of about 10%. Fortunately, the Treo’s battery
life is pretty good anyway, but for some of the more
'longevity-challenged' devices, this could be a real
bonus. When playing games such as Bejeweled 2, which is
notoriously CPU-intensive, XCPUScalar scaled my CPU
smoothly up to 520MHz. The author tells me that some
people using the Treo have even run the CPU at 624MHz,
but I am not quite that brave. The device was perfectly
stable at speeds between 208 and 520MHz. The only
difference that I noticed was a slight lag when the
program us ramping up the processor speed. This lag is
barely noticeable, but it is there. This is definitely
not a deal-breaker… in fact, I don’t think most people
would even notice it.
I also used XCPUScalar to run my Treo at 416MHz for an
entire day. Truth be told, there really just is not too
much that I do on a normal basis that requires that
speed. I carefully watched the TaskBar meter and I never
saw the CPU load go past 75% except for very brief
moments. Battery life suffered about 15-20% when
overclocked to 416MHz which is really not too bad.
PURCHASING
There is a very limited trial available which does not
save any settings and will not allow you to use the Auto
Scale function. I recommend giving the trial a spin just
to make sure that your device does not reject the clock
changes. If you like it you can purchase XCPUScalar at
any major handheld software store such as
PocketGear, for $19.95.
PROS
Supports a wide variety of XScale devices and CPU speeds
Built-in safety features to prevent damage to your
device
Underclocking your device can provide a significant
battery increase
CONS
Graphic glitches on the Treo 700w
Menus are not designed for 240×240 screens- Only works with XScale-based devices
OVERALL
IMPRESSION
Overall, I was very surprised how stable my device
was while using XCPUScalar. I was expecting my
device to have some problems when changing the
speeds up and down, but those problems just did not
materialize. The author of this program obviously
spent a lot of time testing to ensure stability. I
previously used a Verizon XV6700 for an extended
test. One of my primary complaints with that device
was battery life. On that device, XCPUScalar’s Auto
Scale function would be great to underclock and
extend battery life. I also think XCPUScalar would
be great on a high-end VGA device. The bottom line
is, give XCPUScalar a try and see what it does for
your device. I give this product the following rating:
Xcpuscalar 2 85 Serialebi
New version 2.3, now with Auto Scale, CPU Meter, Health meters & Auto Start on Soft Reset. Also supports 1910's with new PXA255 processors.
This product was designed for the iPaq 1910 only. XCPUScalar allows you to dynamically scale the processor speed of your handheld Pocket PC 2002. Use Auto Scaling to assign speeds to different CPU loads, It uses the power of the XSCALE processor and unlocks its dynamic scaling capabilities. You can reduce the speed of your handheld or increase its speed automatically depending on CPU usage of your applications. By scaling the processor speed down, you can increase the battery live between recharges or increase the speed when you need more power for playing games or multimedia programs that require more CPU power. The speed can be scaled from 100 to 300MHZ. The Ipaq 1910's default speed is 200MHz.
If you are using a 400MHz XScale Pocket PC, like Ipaq 3955, Ipaq 5455, Toshiba e740, Dell Axim Advanced and Basic, then download XCPUScalar 400. Download XCPUScalar 400 here.
WHATS NEW IN VERSION 2.3:
Auto Scale with CPU load:
Power on demand, XCPUScalar will now automatically calculate the CPU load on your Pocket PC and switch speeds automatically depending on whether an application requires less or more power. XCPUScalar will scale the speeds automatically and throttle speeds as applications demand power. XCPUScalar throttles down to idle speed when there is no activity giving you the maximum battery power consumption. You can assign your own speeds to different CPU loads as you desire.
XCPUScalar calculates all factors and normalizations automatically and takes the guess work out of using auto scaling.
CPU Meter and WisBar /Gigabar /ICbar or other TaskBar Manager Integration:
XCPUScalar will now install an animated CPU meter icon on your TaskBar (this is the blue title bar area), you can monitor the CPU load and speed when running any application. Clicking on the CPU Meter will launch XCPUScalar for quick access to all settings. CPU Meter detects other taskbar managers and will install its icon in their taskbar area. The position of CPU Meter can be adjusted to be placed anywhere on the taskbar.
Health Meters:
At a glance look at all the vital signs of your Pocket PC. Meters show you CPU usage, Battery Life, Memory program and storage Meters. See how much memory is being used, or left on the fly.
Reduce Screen Flicker Option:
This option was added in XCPUScalar 400 only, to support the Ipaq 39xx and 54xx series to virtually eliminate screen flicker during speed changes.
Minimize On Start:
XCPUScalar can be minimized to start automatically when a soft reset occurs and the system starts up.
Support from 100 to 500MHz:
XCPUScalar 400 now has support for all popular frequencies from 100 to 500MHz. The Ipaq 1910 version can be scaled from 100 to 300 and has a optimized 300MHz speed that reaches benchmark speeds of other 400MHz Xscale's.
Today Screen system tray support:
XCPUScalar can be run from the system tray of the Today Screen allowing easy access to all configurable settings. The system tray icon animates when you change CPU speed, showing you currently running speed at a glance. The tray icon is user selectable and can be turned off.
Sticky Settings:
XCPUScalar automatically detects the speed of your handheld and will automatically force the CPU speed to the user selected speed if it detects that its different. Most 400MHz XScale Pocket PC's automatically reset their speed to the manufacturer's default speed of 400MHz when you Power Off the unit, or when the unit goes into idle mode, causing battery drain. XCPUScalar automatically detects these changes and will revert back to the user selected speed. This setting is user selectable and can be turned off.
Hardware KeyLock:
XCPUScalar can now lock your hardware keys so they do not accidently start other programs when the handheld is in the ON or OFF position.
Display Toggle:
This feature is a display toggle, you can now listem to MP3's while the screen is turned off, saving battery life. by default the Today/Home button is mapped as the display toggle button to turn the screen ON/OFF. Use it in combination with KeyLock to lock all keys but the display toggle key.
Power Off and Soft Reset:
With one click you can now power off or soft reset your Pocket PC without pressing any hardware buttons.
Launch from Anywhere:
XCPUScalar can be configured to execute from the control panel, via a shortcut, from the TaskBar area or from the system tray of the Today Screen. This gives you maximum flexiblity in launching XCPUScalar.
Stealth Mode:
When XCPUScalar is minimized to the system tray, it will automatically remove itself from running processes list.