The HTC Incredible uses similar, but not an identical SoC to what’s in the Nexus One. The Nexus One uses Qualcomm’s Snapdragon QSD8250 SoC, while the Incredible uses the QSD8650. The primary difference between the two is the cellular modem. While the 8650 supports both GSM and CDMA based standards, the 8250 is strictly GSM.

Both are built on TSCM’s 65nm process and run the CPU core at 1GHz. They use the same Adreno 200 graphics core and have the same 32-bit LPDDR1 memory interface.At the macro level we’re looking at the fastest non-Apple, ARM based SoC on the market today (at least in terms of CPU performance). The majority of competing solutions are based on the ARM Cortex A8 and run at sub-1GHz speeds. Snapdragon, as you may remember from our Nexus One review, is based on Qualcomm’s Scorpion core. The Scorpion CPU starts with a similar architecture to the Cortex A8, but a much better performer.

The Apple A4 comparison is a difficult one to make without an identical software stack, but it looks to be the only threat to Snapdragon from a CPU performance perspective today.

The QSD8650, like the 8250, ships with 512MB of LPDDR1 on package. That’s more than enough for the current requirements of the Android OS.

No More Choppy Scrolling, Almost

My biggest issue with the Nexus One was its inconsistent performance, particularly with scrolling and animations. I’m happy to say that HTC has fixed most of those issues, but not all, with the Incredible.

Flipping between home screens is iPhone smooth on the Incredible, so long as you’re using the touchscreen. Use the virtual joystick and it’s back to chopfest for some reason. Scrolling is smooth in nearly all applications, the main exception being messages. If you try to scroll through a list of SMSes the Incredible starts flushing frames like they’re drugs and the police are at the door. It’s clearly a software optimization issue but why it exists in a different area from the Nexus One, and while it continues to exist today, perplexes me.

Contributing to the overall smoother feel of the Incredible is the fact that HTC did away with some animations in the UI. The Nexus One goes for a very iPhone like animation whenever you open/exit an app. You see the app getting bigger until it takes up the whole screen, or getting smaller until it’s reduced to an icon. On the iPhone this is smooth. On the Nexus One the animation is dropping frames, which in turn makes your phone feel slower than it actually is. On the HTC Incredible, the animation simply isn’t there. Launching an app takes you from one screen, almost immediately to the next. It’s like using a brand new PC with an SSD. Launch an application and the window just appears.

The Nexus One and HTC Incredible have the same underlying hardware, but the missing animations and smoother scrolling are key to making the Incredible feel faster. If you go to launch the web browser on both of these phones at the same time you’ll find that the Incredible finishes faster simply because it’s not stuck animating the window.

Not all animations are gone however, just most of the sluggish ones.

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