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GTX 660m + i7-3610QM Performance issue

 
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shhewitt



Joined: 14 Oct 2011
Posts: 2

PostPosted: Sun Aug 19, 2012 2:34 pm    Post subject: GTX 660m + i7-3610QM Performance issue Reply with quote

Hi, been using Neat vdeo for over two years now and find it invaluable. CUDA acceleration in version 3 was a must have upgrade for me. I just got the Lenovo y580 laptop so that I don't always have to work at my desk. A curious performance issue popped up.

The benchmark shows that CPU only has the fastest performance. Here is the log:

Code:
Frame: 1440x1080 interlaced, 32 bits per channel, Radius: 2 frames
Running the test data set on up to 8 CPU cores and on up to 1 GPU

CPU only (1 core): 1.66 frames/sec
CPU only (2 cores): 3.1 frames/sec
CPU only (3 cores): 4.41 frames/sec
CPU only (4 cores): 4.81 frames/sec
CPU only (5 cores): 4.78 frames/sec
CPU only (6 cores): 4.85 frames/sec
CPU only (7 cores): 4.83 frames/sec
CPU only (8 cores): 4.59 frames/sec
GPU only (GeForce GTX 660M): 2.05 frames/sec
CPU (1 core) and GPU (GeForce GTX 660M): 1.98 frames/sec
CPU (2 cores) and GPU (GeForce GTX 660M): 2.48 frames/sec
CPU (3 cores) and GPU (GeForce GTX 660M): 3.25 frames/sec
CPU (4 cores) and GPU (GeForce GTX 660M): 3.26 frames/sec
CPU (5 cores) and GPU (GeForce GTX 660M): 3.22 frames/sec
CPU (6 cores) and GPU (GeForce GTX 660M): 3.24 frames/sec
CPU (7 cores) and GPU (GeForce GTX 660M): 3.18 frames/sec
CPU (8 cores) and GPU (GeForce GTX 660M): 3.16 frames/sec

Best combination: CPU only (6 cores)


Using driver 295.55, CUDA driver 4.2.1

My desktop Core2 Quad 3.0GHz + GTS450 was accelerated nicely with the GPU. Any ideas?
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NVTeam



Joined: 01 Sep 2005
Posts: 2237

PostPosted: Mon Aug 20, 2012 2:12 am    Post subject: Reply with quote

It looks like in this case, Intel wins: that CPU is indeed faster than that GPU. That is not unusual.

Vlad
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shhewitt



Joined: 14 Oct 2011
Posts: 2

PostPosted: Mon Aug 20, 2012 12:07 pm    Post subject: Reply with quote

Well that is a pity. At least my Mercury Playback Engine is still accelerated!
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