Will faster RAM speed decrease render times?

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ArvidAnens
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Joined: 09/19/2010
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I'm an AutoCAD user and I'm going to buy a new computer soon. The motherboard supports 1066 MHz, 1333 MHz, 1600 MHz, 1866 MHz, 2133 MHz and 2200 MHz RAM.
I wonder if the 2200Mhz memories makes better render times compared to 1066Mhz memories. If not, what is fast memory good for?

hnkftalnot
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Joined: 10/14/2010
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It's more memory bandwidth. So I think that helps for rendering, doesn't that access the RAM a lot? But note that RAM timings are equally important, to the point where for example 1333MHz CL7 would perform about the same as 1600MHz CL8. CL goes up with 1 about 200MHz.

So you'd rather have low timings than high speeds

Tivon
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Joined: 04/26/2002
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When you raise the MHz, often the timing or latencies go up as well. You will need 6 or 8 Gigs of memory at the best price + running speed + lowest latencies you can afford. If you don't have a 2nd hard drive I would get another for file and cache space. If you get an nVidia card you can use CUDA, it's a propitiatory way for the gpu to accelerate processing.

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ArvidAnens
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Ok, thanks for your advises. I read that CUDA makes ray tracing faster. Is that for every software that uses ray tracing to render, or does the software have to support CUDA?

Tivon
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Software has to support CUDA.