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Review: AMD arrives on the GPGPU scene with ATI Stream

by Parm Mann on 10 December 2008, 13:13

Tags: AMD (NYSE:AMD), ATi Technologies (NYSE:AMD)

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CPU utilisation

VirtualDub - PAL DV to DivX (CPU Utilisation)
Radeon HD 4870 1GB (QX9650)Radeon HD 4670 512MB (E8500)Radeon HD 4670 512MB (QX9650)
36.8468.4336.77

We know that VirtualDub isn't optimised for multiple cores, and without the benefit of GPU acceleration, it'll consume around 68 per cent of a dual-core processor's resources, and 37 per cent of a quad-core chip. The Stream-enabled Avivo's CPU utilisation, then, should be somewhat lower as it's offloading most of the work to the GPU, right?


Avivo Video Converter (CPU Utilisation)
Radeon HD 4870 1GB (QX9650)Radeon HD 4670 512MB (E8500)Radeon HD 4670 512MB (QX9650)
63.2199.1768.86

We'd have thought so, but apparently not. Being able to utilise multiple CPU cores, we can understand that the Avivo Video Converter may push the quad-core Intel chip a little further. However, with the aid of GPU acceleration, we simply can't ascertain just why CPU utilisation remains so high.

The maxed-out dual-core E8500 in particular highlights that the Stream-enabled Avivo Video Converter may be better suited to quad-core systems.