The BlackBerry PlayBook Review
by Anand Lal Shimpi on April 13, 2011 9:00 PM EST- Posted in
- Tablets
- Smartphones
- RIM
- BlackBerry
- PlayBook
- Mobile
TI's OMAP 4430
You have to hand it to NVIDIA, up until the launch of the iPad 2 if you were talking about a dual-core tablet or smartphone you were likely talking about something running the Tegra 2. Both Qualcomm and TI are late to the dual-core SoC game, but with the PlayBook we have the first shipping device based on TI's Tegra 2 competitor: the OMAP 4430.
At a high level the 4430 looks a lot like the Tegra 2, but dig a little deeper and you'll see that the SoC should be faster overall.
Like the Tegra 2, TI's OMAP 4430 has a pair of ARM Cortex A9s running at up to 1GHz with a shared 1MB L2 cache. Unlike the Tegra 2 however, TI implemented ARM's Media Processing Engine which gives it both a pipelined FPU as well as support for ARM's NEON SIMD instruction set (think SSE but for ARM SoCs). It won't be until Kal-El before NVIDIA brings NEON support to its SoCs.
On the GPU side TI uses a PowerVR SGX 540 by Imagination Technologies. The SGX 540 has four USSE pipes (SIMDs) each capable of up to two MADs per clock.
| Mobile SoC GPU Comparison | |||||||||
| PowerVR SGX 530 | PowerVR SGX 535 | PowerVR SGX 540 | PowerVR SGX 543 | PowerVR SGX 543MP2 | GeForce ULP | Kal-El GeForce | |||
| SIMD Name | USSE | USSE | USSE | USSE2 | USSE2 | Core | Core | ||
| # of SIMDs | 2 | 2 | 4 | 4 | 8 | 8 | 12 | ||
| MADs per SIMD | 2 | 2 | 2 | 4 | 4 | 1 | ? | ||
| Total MADs | 4 | 4 | 8 | 16 | 32 | 8 | ? | ||
| GFLOPS @ 200MHz | 1.6 GFLOPS | 1.6 GFLOPS | 3.2 GFLOPS | 6.4 GFLOPS | 12.8 GFLOPS | 3.2 GFLOPS | ? | ||
At the same clock speed, the SGX 540 has the same theoretical compute potential as the GeForce in NVIDIA's Tegra 2. The SGX 540 is a tile based renderer and thus tends to have an appreciable memory bandwidth advantage in current smartphone/tablet gaming workloads.
TI's memory interface is often touted as a significant performance advantage for the OMAP 4430. While NVIDIA has a single 32-bit LP-DDR2 interface, the OMAP 4 embraces a dual-channel (2 x 32-bit) LP-DDR2 interface giving it twice the theoretical bandwidth of what you'd get on a Tegra 2. NVIDIA argues that its bandwidth efficiency is high enough on the Tegra 2 that you don't need two channels, but it's honestly difficult to really validate claims like that.
The other major piece of the OMAP 4430 is its video engine, something TI calls the IVA 3 multimedia accelerator. This hardware encode/decode engine is what makes full 1080p30 playback and recording possible on the PlayBook. As you'll see in our video tests, the PlayBook is the first ARM based tablet we've used that can decode a 1080p H.264 High Profile video stream.
Overall the OMAP 4430 has the specs to be performance competitive with anything else out there today, definitely anything Tegra 2 based. Apple's A5 still has a much faster GPU but from a CPU standpoint, the PlayBook should be competitive. Any non-3D performance differences would likely be due to software optimization, not hardware limitations.
Facebook
Twitter
RSS
77 Comments
View All Comments
Anand Lal Shimpi - Thursday, April 14, 2011 - link
You're very right, clarified! :)Take care,
Anand
Targon - Thursday, April 14, 2011 - link
I will note that the idea of using gestures that originate in the bezel seems to be an evolution of the Palm(now owned by HP) gesture area on the Palm Pre and the other WebOS based smartphones. Yes, the tablet lets you use any bezel, but as I said, this is an evolution of the concept that Palm implemented with the gesture area.Since the HP Touchpad will not have a dedicated gesture area, it will be interesting to see how things play out going forward in the tablet space.
melgross - Thursday, April 14, 2011 - link
But do the gestures really extend into the bezel area, or do they really just start at the first pixel your finger encounters when swiping from beyond the edge of the screen? I think it's the latter. Swiping from the bezel just insures that your finger will be detected hitting that first pixel in the screen at the edge, which tells the OS that it's a special "bezel" gesture.Maybe I'm wrong, but it makes sense to me that that's how it works, then thinking that the entire bezel is gesture enabled with sensors, though it's possible.
Perhaps Anand, can help here.
AnitaPeterson - Thursday, April 14, 2011 - link
Mate, you wrote so many pages, but eschewed some of the most important questions.1) You discuss the screen, but make no mention of the technology - is it IPS? is it TN? As for the surface - is it polycarbonate? is it GorillaGlass?
2) You discuss the USB, but make no mention of crucial use - does the Playbook have USB host capabilities? In other words, can you connect an external HDD to it (whether self-powered or externally powered) and read files from it?
3) Since we mention USB and external storage, how about a peep about SD card support? Seriously... a review with nary a mention of additional/expandable storage?
4) Why are you comparing it with the iPad and the Xoom, instead of comparing it with the only other real, usable device in its size class, namely the Galaxy Tab??? The Playbook is not for people who want large devices, who can get an iPad... Is it not clear that the size is one of the biggest factors at play here? You mention the Galaxy Tab exactly once, and make an intriguing statement that the Playbook is a bit larger... but when it comes to pictures, again you compare it with the Kindle (!??) and the iPad. Eh? the Kindle???
I'm sorry to be harsh, but this is a rush job... just like the Playbook itself.
Lepton87 - Thursday, April 14, 2011 - link
Have you even read the review? It answers two of your three questions. The tablet doesn't have an SD card slot and it doesn't have an USB port either. Your fist question still stands, I'm also curious what panel technology its screen uses.Pessimism - Thursday, April 14, 2011 - link
Incorrect. It does have a USB port, and the review specifically states this when discussing available charging options. The poster was asking whether its possible to use a male-male USB cable to connect mass storage to it.Pessimism - Thursday, April 14, 2011 - link
of hearing everyone whine and complain about lack of matroska support. matroska has NO STANDING outside anime nuts who can't wrap their brains around a second file to contain subtitles. matroska is a tiny speck with no corporate backing, no manufacturer is going to dedicate development time or die space to support it.Penti - Friday, April 15, 2011 - link
Actually it has pretty good manufacturer standing now, it's supported by Sonic Solutions/divx, ArcSoft, CoreCodec and all the serious chipset manufacturers of media player chipsets and STB solutions. As well as support on BD-players and televisions coming along. Nero also has support for it btw. Even boxes like the Roku now supports local playback and MKV. (Roku XDS with USB) Also there is no die space needed it's just a container. Software is all that's needed. Nokia also added MKV support in Symbian^3.DesktopMan - Thursday, April 14, 2011 - link
"As you'll see in our video tests, the PlayBook is the first ARM based tablet we've used that can decode a 1080p H.264 High Profile video stream."I believe the Hard Kernel ODROID-A was the first on the market (though in limited availability), as it's using the Samsung Exynos 4210 SOC. Would be great to see a test of that, to see how well the Exynos drives a tablet. I have high hopes for it.
NCM - Thursday, April 14, 2011 - link
The ability to handle 1080p H.264 is technically impressive, but I have to wonder about its relevance to the intended business market. One might like that at home, although even there it seems to me to be a party trick.And speaking of business use, the idea of using webmail for that is of course a joke, especially on a mobile device that won't always have a live net connection. I'm sure we all understand that this really is a software timing problem, but still, a bit of an embarrassment for RIM.
I'm not enticed by the 7" screen size, which is too big for the pocket and seems too small for good reading functionality. But one of the things we're seeing from the iPad's success is that people are coming up with their own uses for tablets, uses that weren't necessarily envisioned before they hit the market. Maybe that'll happen with the 7" devices too?