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View Full Version : Bets CPU+MoBo for dynamic calculations 300$-350$


Irakli
08-16-2012, 02:58 PM
Hi,
I'm trying to build a "cheap" machine for dynamic calculations such as RealFlow, Maya Fluids, nPraticles/nCloth sims. So I'd like to compare 3770 and 3820. IMO, the big difference is memory handling - 4 channel v.s. 2 channel.

olson
08-16-2012, 03:29 PM
The difference between the two will be indiscernable to the user. In measured benchmarks there will be little difference, maybe 10% at most. The main advantage of the Core i7-3820 is the additional memory slots to handle more memory (64GB max versus 32GB max). If cost is a big concern the Core i7-3770 will be at least $100 less expensive overall (socket 2011 boards are pretty expensive).

Irakli
08-16-2012, 03:40 PM
Thanks!
I'm not planning to buy more than 32GB of RAM. So, the memory channels have not any influence? I mean 32GB + 2011 and 32GB + 1155 will have the same effect?

olson
08-16-2012, 04:17 PM
There's a worthwhile jump in performance from single channel memory to dual channel memory but after that the differences are very small, one or two percent. The processors are not fast enough to need the extra memory channels (yet). By the time processors are fast enough to need quad channel DDR3 we'll probably have DDR4 or whatever is next which won't need quad channels to offer the same bandwidth.

Irakli
08-16-2012, 04:36 PM
There's a worthwhile jump in performance from single channel memory to dual channel memory but after that the differences are very small, one or two percent. The processors are not fast enough to need the extra memory channels (yet). By the time processors are fast enough to need quad channel DDR3 we'll probably have DDR4 or whatever is next which won't need quad channels to offer the same bandwidth.
Thanks for detailed explanation

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