AMD Threadripper 2990x seems out what is the gain vs 1950x ?

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Dann Corbit
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Re: AMD Threadripper 2990x seems out what is the gain vs 1950x ?

Post by Dann Corbit » Fri Aug 17, 2018 6:10 pm

gogamoga wrote:
Fri Aug 17, 2018 3:43 pm
This is the best I could come up with

Image
The real differences are not nearly so large.
That is because you will need a whole machine to do chess, and not just a CPU.
So when you add in all the other stuff, we are talking about $6000 instead of $4500.
So the ratios do not look that bad in the end.

And always get the really big power supply. That way, you can plug in the huge GPU(s) when it comes along and things like that.
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.

corres
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Re: AMD Threadripper 2990x seems out what is the gain vs 1950x ?

Post by corres » Sat Aug 18, 2018 9:07 am

There is an enhanced test about 2990WX on
https://www.techspot.com/review/1678-am ... 0wx-2950x/
Their results prove 2990wx is good for no memory intensive applications.
So for servers it is bad choice but for rendering, for video games and for chess engines it is very good CPU.

Leo
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Re: AMD Threadripper 2990x seems out what is the gain vs 1950x ?

Post by Leo » Sat Aug 18, 2018 2:38 pm

corres wrote:
Sat Aug 18, 2018 9:07 am
There is an enhanced test about 2990WX on
https://www.techspot.com/review/1678-am ... 0wx-2950x/
Their results prove 2990wx is good for no memory intensive applications.
So for servers it is bad choice but for rendering, for video games and for chess engines it is very good CPU.
All we care about on this site is chess performance. Its a winner.
Advanced Micro Devices fan.

corres
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Re: AMD Threadripper 2990x seems out what is the gain vs 1950x ?

Post by corres » Sat Aug 18, 2018 8:43 pm

Leo wrote:
Sat Aug 18, 2018 2:38 pm
corres wrote:
Sat Aug 18, 2018 9:07 am
There is an enhanced test about 2990WX on
https://www.techspot.com/review/1678-am ... 0wx-2950x/
Their results prove 2990wx is good for no memory intensive applications.
So for servers it is bad choice but for rendering, for video games and for chess engines it is very good CPU.
All we care about on this site is chess performance. Its a winner.
The exact chess performance is engine dependent too. Generally in comparison to Threadripper 1950x you can expect about 40 Elo plus - without any test.
I hope 2990x will work more effectively on bmi2 engines than 1950x does it.

Joost Buijs
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Re: AMD Threadripper 2990x seems out what is the gain vs 1950x ?

Post by Joost Buijs » Sun Aug 19, 2018 4:28 am

corres wrote:
Sat Aug 18, 2018 8:43 pm
Leo wrote:
Sat Aug 18, 2018 2:38 pm
corres wrote:
Sat Aug 18, 2018 9:07 am
There is an enhanced test about 2990WX on
https://www.techspot.com/review/1678-am ... 0wx-2950x/
Their results prove 2990wx is good for no memory intensive applications.
So for servers it is bad choice but for rendering, for video games and for chess engines it is very good CPU.
All we care about on this site is chess performance. Its a winner.
The exact chess performance is engine dependent too. Generally in comparison to Threadripper 1950x you can expect about 40 Elo plus - without any test.
I hope 2990x will work more effectively on bmi2 engines than 1950x does it.
Afaik BMI2 is still slow as molasses, and AVX-512 still missing. Zen+ is just a tiny improvement over Zen, hopefully these things will be fixed next year when Zen2 arrives.

frankp
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Re: AMD Threadripper 2990x seems out what is the gain vs 1950x ?

Post by frankp » Mon Aug 20, 2018 9:11 am

I thought I read somewhere that BMI is 'only' 32bit.
Certainly popcnt faster on Ryzen.

Leo
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Re: AMD Threadripper 2990x seems out what is the gain vs 1950x ?

Post by Leo » Tue Aug 21, 2018 2:17 pm

gogamoga wrote:
Fri Aug 17, 2018 3:43 pm
This is the best I could come up with

Image
What does this chart mean? I don't understand it.
Advanced Micro Devices fan.

zullil
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Re: AMD Threadripper 2990x seems out what is the gain vs 1950x ?

Post by zullil » Tue Aug 21, 2018 2:50 pm

Leo wrote:
Tue Aug 21, 2018 2:17 pm
gogamoga wrote:
Fri Aug 17, 2018 3:43 pm
This is the best I could come up with

Image
What does this chart mean? I don't understand it.
Column C is engine speed in millions of nodes per second, searching from the starting position of a chess game. Not sure what engine. Not sure if speed is recorded at a particular depth, or represents a limiting value. Am assuming the number of search threads matches the number of (physical?) cores on the chip.

Column D is 100 * (Column C) / (Column B).

Leo
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Re: AMD Threadripper 2990x seems out what is the gain vs 1950x ?

Post by Leo » Wed Aug 22, 2018 1:44 am

zullil wrote:
Tue Aug 21, 2018 2:50 pm
Leo wrote:
Tue Aug 21, 2018 2:17 pm
gogamoga wrote:
Fri Aug 17, 2018 3:43 pm
This is the best I could come up with

Image
What does this chart mean? I don't understand it.
Column C is engine speed in millions of nodes per second, searching from the starting position of a chess game. Not sure what engine. Not sure if speed is recorded at a particular depth, or represents a limiting value. Am assuming the number of search threads matches the number of (physical?) cores on the chip.

Column D is 100 * (Column C) / (Column B).
Thanks. You cleared it up.
Advanced Micro Devices fan.

Leo
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Full name: Leo

Re: AMD Threadripper 2990x seems out what is the gain vs 1950x ?

Post by Leo » Sun Nov 18, 2018 11:15 pm

Advanced Micro Devices fan.

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