Intel-Core-i7-7700K

Looking for new hardware to run WRF? Intel or AMD? Check this forum.
dominic
Posts: 312
Joined: Thu Jun 14, 2012 7:19 am

Re: Intel-Core-i7-7700K

Post by dominic » Fri Jan 20, 2017 4:46 pm

As regards the processor, which upgraded me advice? the 7700k or 6800k?

meteoadriatic
Posts: 1510
Joined: Wed Aug 19, 2009 10:05 am

Re: Intel-Core-i7-7700K

Post by meteoadriatic » Fri Jan 20, 2017 9:23 pm

If you have more money, 6800K will be faster but I think with less good ratio performace/price.

dominic
Posts: 312
Joined: Thu Jun 14, 2012 7:19 am

Re: Intel-Core-i7-7700K

Post by dominic » Sat Jan 21, 2017 8:12 am

meteoadriatic wrote:
Fri Jan 20, 2017 9:23 pm
If you have more money, 6800K will be faster but I think with less good ratio performace/price.
there is a significant difference between 7700k and 6800k?

2 cores more but less frequency, at this point if you really need to spend the money should bet on a 8 core.

ivan you who are using?

meteoadriatic
Posts: 1510
Joined: Wed Aug 19, 2009 10:05 am

Re: Intel-Core-i7-7700K

Post by meteoadriatic » Sat Jan 21, 2017 3:01 pm

I found that for WRF, this benchmark predicts performance VERY closely:
https://cpubenchmark.net/high_end_cpus.html

I use various CPUs on different installations but none of those two. But you can't fail much predicting them by using above metrics.

dominic
Posts: 312
Joined: Thu Jun 14, 2012 7:19 am

Re: Intel-Core-i7-7700K

Post by dominic » Sat Jan 21, 2017 4:17 pm

thanks ivan. mistake or 6850k is put right? It could be a viable alternative

https://cpubenchmark.net/cpu.php?cpu=In ... Hz&id=2800

meteoadriatic
Posts: 1510
Joined: Wed Aug 19, 2009 10:05 am

Re: Intel-Core-i7-7700K

Post by meteoadriatic » Sat Jan 21, 2017 4:25 pm

Sure that one is great.

dominic
Posts: 312
Joined: Thu Jun 14, 2012 7:19 am

Re: Intel-Core-i7-7700K

Post by dominic » Sun Jan 22, 2017 9:46 am

Notable differences with I5 3570k? Sandy bridge

meteoadriatic
Posts: 1510
Joined: Wed Aug 19, 2009 10:05 am

Re: Intel-Core-i7-7700K

Post by meteoadriatic » Sun Jan 22, 2017 12:09 pm

Sure there are much difference between 6850k and 3570k. I advice again to use cpubenchmark.net.
Comparision: https://www.cpubenchmark.net/compare.ph ... 5B%5D=2800

So result is about double CPU mark in favor of 6850k which means it will take simulation in about half time compared to 3570k. It is not exact, but it is very close to real results with WRF.

dominic
Posts: 312
Joined: Thu Jun 14, 2012 7:19 am

Re: Intel-Core-i7-7700K

Post by dominic » Sun Jan 22, 2017 2:14 pm

meteoadriatic wrote:
Sun Jan 22, 2017 12:09 pm
Sure there are much difference between 6850k and 3570k. I advice again to use cpubenchmark.net.
Comparision: https://www.cpubenchmark.net/compare.ph ... 5B%5D=2800

So result is about double CPU mark in favor of 6850k which means it will take simulation in about half time compared to 3570k. It is not exact, but it is very close to real results with WRF.
thanks ivan, are useful info for my hardware choice. Last question, I read a little of 6900 (8 hours), there are major differences with the 6800? wrf could be important in this difference?

meteoadriatic
Posts: 1510
Joined: Wed Aug 19, 2009 10:05 am

Re: Intel-Core-i7-7700K

Post by meteoadriatic » Sun Jan 22, 2017 3:59 pm

Sure 2 cores more but much $$$ more

http://www.cpubenchmark.net/compare.php ... 5B%5D=2785

In my opinion not worth money but if you must get as poweful CPU as you can of course go for it it is faster.

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