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3DS max slow rendering times for monster PC

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Jancho26
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3DS max slow rendering times for monster PC

Hello,
I am a bit of novice and I was only asked by my collegue to do a research why is his old PC is rendering faster than his new monster PC that was bought specifically for rendering purposes and to be super fast. Both run the same software and OS(win 7 64bit)
Specs for both computers:
Old one - i5-760 (4 Cores/Threads @ 2.8GHZ), 8 GB RAM, and GeForce GTX 550 Ti 1GB, Western Digital HDD drive 1TB 7200RPM
New one - i7-3930K(6 Cores, 12 threads @ 3.8GHZ), 32GB RAM(!!), Quadro 2000D 1GB, SSD 120GB Kingston.

What we are rendering - a 1.5minute animation on 3DS max 13 64bit. We started on Default Scanline Renderer on Old PC it takes 3h 30minutes, on New PC - 4h 30minutes! OK, then we realized that Scanline renderer isn’t using GPU at all. Next up Quicksilver Hardware Renderer(Direct3d) - Old PC - 36minutes, New PC - 46 minutes! Turned out Quicksilver is no good for us, it wasn’t rendering in Full HD, but instead rendering it to 640x480 while still rendering it shows correct resolution. Went to iRay(GPU) - 11 hours on Old one, 12 hours on new one - too long. Mental Ray (CPU) - 10 hours vs 12 hours accordingly. Got our hands on Vray-RT that finally utilizes CUDA cores and should be a lot faster - nope, around 30 hours when CUDA selected on both PCs.

Can anyone tell us, what exactly could be cause of this? And why is Old PC render times 1/4 faster than New PCs while CPU rendering? It’s simply impossible and I have no explanation for this.

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