Forget Expensive Video Cards

Anonymous Reader writes "Apparently, the $200 in video cards does not produce the difference. While $500 video cards steal the spotlight on review sites and offer the best performance possible for a single gpu, most enthusiasts find the $300 range to be a good balance between price and performance. Today TechArray took a look at the ATI x1900xtx and Nvidia 7900gtx along with the ATI x1800xt and Nvidia 7900gt."

Comments

Re:Not directly related to TFA

[TheRaven64]

Render farms don't need or have video on each processor ... you just have thousands of machines in racks processing data streams.

Actually, that's not quite true these days. A modern render farm has a GPU (or two) in each node, and uses it for all sorts of things. If you are only doing relatively low-quality renderings, you can use something like Chromium and get high framerate, enormous images rendered through OpenGL. If you are doing ray tracing, you can speed this up hugely using the GPU.

Even volume rendering runs on the GPU these days. You can split an enormous volume into 256^3 cubes, render these quickly on an large array of GPUs and then composite the individual rays using the alpha blending hardware on a smaller array of machines in a tree configuration until you have the final image[1].

So, no, not every node needs a video output capability, but if you want state-of-the-art performance they do all need at least one GPU.

[1] Some people are using other kinds of stream processor for this step these days, but that's still a relatively young research area.