multi thread speed - 8 cores? 6 cores?

Has anyone tried filter forge on the new intel i7 8 core processors ( 16 threads) or even the 6 core ones? Where they can report on the speed increase to say a typical i7 4 core machine ( most of us use). Is it 2x faster or less than that. Just curious how much the speed up is on a typical i7 4 core. To some of us, where paying for speed up of filter forge might be an option, it would be nice to know what kind of speed up you would get. I have access to a 6 core i7, ssd, 32 G Ram PC but my two copies of filter forge are on other machines.

Also note that an SSD generally gives more performance increase than extra RAM.

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stevedipaola test: time to complete: 1 core (GMM suggestions) 4 min 44 sec all 4 cores: 59 sec 4 cores w/ OCed @ 4.58 Ghz 45 sec if I went with a 8 core cpu might double my speed

I have been investigating much about this thinking to buy a cpu with more cores (6 or and I have seen that there are more factors that will be included in the final perfomance and speed, and not only the number of cores.

Here is a very good benchmark page to compare the CPU perfomance power and increase

Primate Labs' processor benchmark chart with Geekbench 3

In this link here below

Tom Hardware - Difference between 4 and 8 cores

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Bloom691 wrote Doubling cores does not double processing power because of other overheads and bottlenecks in the pipeline architecture. However it will significantly increase it - 73.5% faster based on your numbers. However, remember a lot of software is not optimized and written to run efficiently on multiple cores. So your theoretical 73.5% improvement could drop anywhere from 0% to 73.5%. You really need to check specific software to see how well it runs on multiples cores simultaneously. Hope this helps!

Vladimir and GMM have told that FF has been optimized to be able to get all the power from all the cores you may have, BUT there is not yet any person that has put real benchmarks and render times with a 6 or 8 cores computer that are on the same CPU.

There are some benchmarks on the forum with 8 cores made with 2 quad cores on the same motherboard but this is not the same, and I think that really it can´t be compared right.

ALSO the number of cores is NOT always a measure of bigger perfomance, for example here is a comparison benchmark

Intel Core i7 4770K (Quad Core 3.5 Ghz) vs AMD FX 8350 (8 Cores 4 Ghz)

The Intel is hyperthreaded so it has another 4 virtual cores

The Intel Quad Core 3.5GHz is faster in most benchmarks than the AMD Octa core 4GHz.

And considering than an Intel 8 cores really has 16 cores (8 real and 8 virtual)