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mas5acre is offline mas5acre
2010-01-01 , 20:03
Posts: 111 | Thanked: 22 times | Joined on Dec 2009
#1
Does a snap dragon processor have dedicated gpu capabilities? I know the n900 processor is weaker than the snapdragon, but doesn't it have an opengl Es gpu as well, how does graphic capabilities of snap dragon compare?
 
Rushmore is offline Rushmore
2010-01-01 , 20:11
Posts: 1,255 | Thanked: 393 times | Joined on Oct 2009 @ US
#2
There are apparently two flavors of Snap.

1. Dedicated DSP and GPU on die
2. Processor also has DSP and GPU functions built in a lower cost chip option. Device buyers that care about these things should check on what the device they are getting has.

Apparently the 3430 has a more robust DSP and GPU and Snap makes up for this through clock cycles, but at a premium on the battery. Most Snap devices will be capped at either 650mhz or 700mhz due to power and heat concerns. Uncapped Snaps will be in non-phone sized devices.
 
c0rt3x is offline c0rt3x
2010-01-01 , 20:16
Posts: 367 | Thanked: 176 times | Joined on Oct 2009
#3
The 2009 Snapdragon family consists of one higher clocked stand-alone processor, while the N900's OMAP SoC includes a CPU/GPU/DSP combo. For calculations they're about equal, while the Snappy is obviously inferior for gaming and such. Remember that the DSP (digital signal processor) loads off the N900's main CPU (Cortex A8), while the Snap has to do everything by itself.
 
c0rt3x is offline c0rt3x
2010-01-01 , 20:18
Posts: 367 | Thanked: 176 times | Joined on Oct 2009
#4
Originally Posted by Rushmore View Post
There are apparently two flavors of Snap.

1. Dedicated DSP and GPU on die
2. Processor also has DSP and GPU functions built in a lower cost chip option. Device buyers that care about these things should check on what the device they are getting has.

Apparently the 3430 has a more robust DSP and GPU and Snap makes up for this through clock cycles, but at a premium on the battery. Most Snap devices will be capped at either 650mhz or 700mhz due to power and heat concerns. Uncapped Snaps will be in non-phone sized devices.
The vast majority of the Snapdragon chips manufactured this year was of the "inferior type" of your description.
 
Rushmore is offline Rushmore
2010-01-01 , 20:27
Posts: 1,255 | Thanked: 393 times | Joined on Oct 2009 @ US
#5
Originally Posted by c0rt3x View Post
The vast majority of the Snapdragon chips manufactured this year was of the "inferior type" of your description.

I think the HD2 and the Nexus have version 2. Battery performance will be interesting on a rooted device that allows using all of Snap. Be interesting to see how quick it drains playing a game emulator and how hot they get.


added:

Also video would be interesting, since HTC are infamous for not making at all, or not very good drivers for acceleration.

Sony made drivers for the X2 that uses a Qualcomm 7200 derivative.
Last edited by Rushmore; 2010-01-01 at 20:31.
 
c0rt3x is offline c0rt3x
2010-01-01 , 20:31
Posts: 367 | Thanked: 176 times | Joined on Oct 2009
#6
Originally Posted by Rushmore View Post
I think the HD2 and the Nexus have version 2. Battery performance will be interesting on a rooted device that allows using all of Snap. Be interesting to see how quick it drains playing a game emulator and how hot they get.
Both of the devices you mentioned has the QSD8250 chip from 2008, which is the inferior type. I'm sorry, but the later version has recently only reached production status. It'd be very unlikely to see it in already lauched devices.
 
mas5acre is offline mas5acre
2010-01-01 , 20:31
Posts: 111 | Thanked: 22 times | Joined on Dec 2009
#7
hey thx was having a little bit of buyers remorse on my n900 and haven't even got it yet (hate new year's day or else it would be here!). I like emulators, and the n900 has something most phones don't, a physical keyboard as I think its near impossible to game without one and just with multi-touch.
 
Rushmore is offline Rushmore
2010-01-01 , 20:32
Posts: 1,255 | Thanked: 393 times | Joined on Oct 2009 @ US
#8
Originally Posted by c0rt3x View Post
Both of the devices you mentioned has the QSD8250 chip from 2008, which is the inferior type. I'm sorry, but the later version has recently only reached production status. It'd be very unlikely to see it in already lauched devices.
Yes, version "2" would be using more clock to get things done

By version "2" I refer "2." in my post #2 and not a new version of the chip. Which would be "1.".

Most consumers will be oblivious though, since ignorance is bliss

Update:

In reference to post #9, I thought the other chip version had both? I am wrong once again.
Last edited by Rushmore; 2010-01-01 at 20:37.
 
c0rt3x is offline c0rt3x
2010-01-01 , 20:35
Posts: 367 | Thanked: 176 times | Joined on Oct 2009
#9
***CORRECTION***

Both HTC HD2 and Google N1 have a dedicated DSP, but both lacks a GPU.

Source: http://pdadb.net/index.php?m=cpu&id=...dragon_qsd8250
 
mas5acre is offline mas5acre
2010-01-01 , 21:51
Posts: 111 | Thanked: 22 times | Joined on Dec 2009
#10
Originally Posted by c0rt3x View Post
***CORRECTION***

Both HTC HD2 and Google N1 have a dedicated DSP, but both lacks a GPU.

Source: http://pdadb.net/index.php?m=cpu&id=...dragon_qsd8250
Looks like I chose the right phone... though, the next maemo, I'm worried about all this multitouch and making it smaller. I'd miss the keyboard for games as touchscreens don't quite cut it.
 
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