Messages

1

General / Re: Photoscan on a laptop

« on: March 21, 2013, 12:42:17 PM »

Hi James,

You have to know that the AMD Radeon 7870m is faster than Geforce GTX 680m
and the Quadro equivalent in Photoscan. You can check it in this thread: http://www.agisoft.ru/forum/index.php?topic=651.0

It's at least, 66% faster in this opencl based(like photoscan) benchmark :
http://clbenchmark.com/result.jsp

In another opencl benchmark,the SmallLuxGPU rendering application, you can see that the 7870 desktop card (7970M is based on the desktop HD 7870) is 100% faster than Geforce GTX 680 (GTX 680m is based on the desktop GTX 680).http://www.anandtech.com/show/5699/nvidia-geforce-gtx-680-review/17

And is 300 euro cheaper!
If you do prefer Dell to Clevo/Sager ,you can check the Dell Alienware gaming notebooks, although they are expensive ones.

2

General / Re: Benchmarking a GPUs

« on: November 23, 2012, 04:51:10 AM »

The Radeon 7870 desktop and 7970m(mobile) are in fact the same chip (Pitcairn),they have the same number of shader processors,1280 and memory Speed ,1200 MHz.The difference is in the core speed ,that is 1000 MHz in the desktop version vs. 850 MHz in the mobile one.

The perfomance of desktop version is only 9% faster than the mobile one.You can check this on this link http://www.notebookcheck.net/AMD-Radeon-HD-7970M.72675.0.html, look for benchmark 3DMark 11 - Performance GPU 1280x720.

The safe bet,currently,for a 7970m laptop is to get the Alienware m17x-r4,where you can deactivate the integrated gpu in the intel processor in bios,so you can avoid the whole Enduro mess.

Enduro is the AMD version of Nvidia Optimus.

You can check in the notebookcheck.net  Alienware m17x-r4 specific forum that there is not performance problems like in the Clevo/Sager notebooks.

3

General / Re: Benchmarking a GPUs

« on: November 22, 2012, 09:34:19 PM »

Hi,

I have registered just to say that I get 400 million samples/sec with a Radeon 7870 in Photoscan trial version in the Wishgranter scene.

The model is Sapphire Radeon HD 7870 GHz Edition,it is the model with the two fans and
it?s very silent .The temperature tops at 59 celsius when in Photoscan at 85%-97% of load.
Price around 220 euros in Spain.