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<p>Hi, </p>
<p>this is an update to my previous email (below)</p>
<p>Has anyone noticed that 2.64 64bit GPU renders are slower than 2.63 64bit GPU? Or is it some quirk on of my system? </p>
<p>EVGA GTX460 2GB (with latest driver)</p>
<p>Compared 3 builds/releases of Blender 2.64 using these benchmarks:        </p>
<p>#1   http://blenderartists.org/forum/showthread.php?239480-2-61-Cycles-render-benchmark&highlight=benchmark</p>
<p>#2  http://benchmark.cd3dtech.com/Benchmark/benchmark.html</p>
<p> </p>
<p>2.63a r46461:46487M                     6:22            1:13</p>
<p>"Fastest CUDA" r51640                   8:15            1:37</p>
<p>Blender.org 2.64a  r51232              8:08            2:01</p>
<p>Buildbot.com r51641                        8:16            1:37</p>
<p>Note,  rendered 1x1 tiles per Adriano Oliveira's suggestion for faster time......8x8 rendered in 14min 22sec. </p>
<p>Please let me know if this is a known issue, or if you need me to test more builds/releases. </p>
<p>Thanks, <br/>Cal  McGaugh</p>
<p>www.blenderportal.com </p>
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<br/>---------- Original Message ----------
<br/>From: Cal McGaugh <cal@cal3d.com>
<br/>To: bf-cycles@blender.org
<br/>Date: October 23, 2012 at 6:18 PM
<br/>Subject: Cycles 2.64 GPU 2X slower???
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Hi,
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using
<a target="_blank" href="http://benchmark.cd3dtech.com/Benchmark/benchmark.html">this benchmark</a>,   Cycles 2.64 r51291-mingw64  renders in 14min 22sec
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Cycles 2.64 2.64.5 "Fastest build (All CUDA kernels)  renders in 14min 58sec. 
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<strong>But 2.63 r46461:46487M renders in 6min 22sec</strong> .........what's up???
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Just thought someone should know about it. 
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Cheers, 
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Cal 
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