This time we tested Thea render with its Presto engine that utilizes both GPU and CPU power.
As a testing environment we have chosen our GTX server with 7x nvidia 970 cards. System runs Windows 7 x64 and uses 2x Intel Xeon with 24 threads overall. Thread frequency 2,67 GHz.
Scenes used for testing are well known benchmark scenes available from Thea render site
We started with the “caustic” scene and rendered it using Presto engine utilizing single 970 GPU as a reference. 512 samples rendered in 3 minutes 43 seconds. With 7 GPUs it took only 35 sec to do the same. Utilizing 7 GPUs and 24 CPU threads gave similar result of 34 sec.
Next we went to test the “instancing” scene. 114 samples on a single GPU rendered in 5 min 01 sec. On 7 GPUs it took 52 seconds. Using all GPUs and CPU’s threads gave a result of 44 sec. Using CPUs only took 3m 33 sec.
With the scene “MeccanoPlane” results were 4 min 55 sec on a single card and 47 sec on 7x GTX 970. Final “Gear” scene rendered 165 samples in 5m 01s on single card and needed 44 sec to calculate the same amount of samples using 7 GPUs.
What can we say about Thea and its Presto engine? On average using 7 gpus gave the result of 6,28 the rendering speed of a single GPU system. Adding CPUs could sometimes gave results a bit above the 650% of a single GTX 970 card.
Thea render and Presto engine has our full recommendation for multi GPU systems. On addition thanks to Thea using also CPUs we can always add some small performance boost.
Remember that with us you can render your Thea Presto projects on up to 35 render farm GPUs. Contact us for a price quote regarding your project or check our servers rental Pricing