Question regarding Processors

[Juraj]

i think AMD isnt behind intel CPU, unless we disregards the CPU prices

 i have never get disappointed by AMD's performance.

Factually it is wrong though, AMD lost the performance battle long time ago, on both enthusiast mainstream platform and server computing alike.

AMD's most powerful CPU in mainstream segment is ridiculously clocked FX-9590 ("pseudo" 8-core, it's more 4 clusters), which at  5GHz @ 220W clock !!! is 10perc. slower  that 3.5 GHz @ 115W 4770k (4 core with HT).
Due to certain AMD's architecture choices, this performance doesn't translate well to rendering and they're often far more behind in actual (not synthetic) benchmarks. Reality is pretty sad for AMD right now and one can only wish them luck.

Current generation Intels, are not only twice less power-hungry, they're twice more powerful core-to-core singlethreaded performance making them much better workstation tasks candidate, but also offering top models which outperform AMD counterpart in pretty much any task.

They're behind in every single category, from budget, to high-end. They offer often cheaper platform overall, as the boards are super cheap, but also lack features of intel counterpart.

I would never suggest anyone to buy AMD today. Maybe next year some miracle might happen, but not right now. It's hardly good for market and customers, but that's the way it is.

[Christa Noel]

AMD's most powerful CPU in mainstream segment is ridiculously clocked FX-9590 ("pseudo" 8-core, it's more 4 clusters), which at  5GHz @ 220W clock !!! is 10perc. slower  that 3.5 GHz @ 115W 4770k (4 core with HT).

juraj,
i have no other amd cpu than fx6300. so i can't check the performance comparation.
but here is the link about rendering benchmark: "http://www.xbitlabs.com/articles/cpu/display/amd-fx-9590-9370_6.html"
i hope there will be a chance for me to benchmark (render) those both CPUs.
i'm not AMD fanboys and intel too. and i think processor with TDP 220w is ridiculous things.
now, let me pray for a miracle come to AMD next year.. i mean it hahaha :-D

[padre.ayuso]

So I have been testing these two slaves (AMD) against the other two I have (Intel) and the AMD are half the speed in MR and about 1/8th to 1/10th in Corona. After some research, the AMD chips seem to not hyperthread whereas the Intel ones do, hence the speed increase. Hope this helps anyone when making a decision in buying a future CPU machine.

[Juraj]

So I have been testing these two slaves (AMD) against the other two I have (Intel) and the AMD are half the speed in MR and about 1/8th to 1/10th in Corona.

1/2 vs 1/8 is BIG difference that I guess should be written on Corona(+Embree)'s shoulder. I guess it's being tested on just single type of machine (regular i7) which is why any outlier performs worse than it should perhaps.

But how did you test it ? On your own personal scene (Alpha 7.1) ?

[padre.ayuso]

Hi Juraj,

Yes, a scene I was working on, not really personal, work oriented. I was xrefing 9 other scenes, had 957 lights on, and I had to DR 3 other machines. On the DR dialog, the two slaves with Intel processors were getting between 8 to 10 passes while the AMD machine would do no more than 1 pass. Since it was a very heavy scene, there would be several updates a minute and one could easily see how many passes and the difference between both type of machines.

I was using Corona 7.1. I was using the original 7.1 and no Daily Builds, just the original Alpha put on the forum by Ondra.

[ihabkal]

Embree doesn't give more than 30perc advantage at most, AMD simply has weak architecture and had for many years now, the days of Athlon64 are gone sadly.

When first implemented, embree made waaay bigger difference in Corona than 30% - it is líke some crazy unicorn pony magic!

I also tested embree on an AMD rig, and it was not significantly slower. I suspect Corona is slower there because I only develop and optimize on Intel. Maybe sometimes in the future I will try to optimize also on AMD.

With Ryzen at the door a lot of people will switch to AMD, maybe it is time to consider fine tuning Corona to be AMD friendlier.

[Ondra]

Embree doesn't give more than 30perc advantage at most, AMD simply has weak architecture and had for many years now, the days of Athlon64 are gone sadly.

When first implemented, embree made waaay bigger difference in Corona than 30% - it is líke some crazy unicorn pony magic!

I also tested embree on an AMD rig, and it was not significantly slower. I suspect Corona is slower there because I only develop and optimize on Intel. Maybe sometimes in the future I will try to optimize also on AMD.

With Ryzen at the door a lot of people will switch to AMD, maybe it is time to consider fine tuning Corona to be AMD friendlier.

that is the plan!

[Juraj]

I would never suggest anyone to buy AMD today

Hah, I wrote this 3 years ago in this thread :- ) How do times change...

I fully suggest anyone to go and buy AMD right now for a change.