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FORUMS General Gear Talk Computers 
Thread started 15 Feb 2018 (Thursday) 22:04
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multicore processors

 
davesrose
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Post edited 4 months ago by davesrose. (3 edits in all)
     
Feb 17, 2018 11:06 as a reply to  @ post 18565837 |  #16

On researching, there currently aren't many i7 8th gen desktop processors (just 2, and both are 6 core). Even 6th gen i7 quad core processors are still being sold. If you're serious about multi-cores, Xeon processors are still beasts (more cores and multi-processor support).


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hobowriter
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Mar 13, 2018 09:26 |  #17

davesrose wrote in post #18565549 (external link)
You've just asked about multi-threading, and not giving any info about what your budget is, how much RAM, or what GPU you're looking at. If you're building the desktop, Newegg has good prices on processors. If you're looking for a brand that makes specific graphics workstations, apart from Boxx, Dell, and HP, I've used a smaller company based in California named Xi Computer (external link). They have good prices with RAM and graphics cards.

My question was pretty specific i.e., "Are multi core processors only beneficial to programs designed for multi core processors" .




  
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MalVeauX
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Post edited 3 months ago by MalVeauX. (3 edits in all)
     
Mar 13, 2018 09:43 |  #18

hobowriter wrote in post #18584426 (external link)
My question was pretty specific i.e., "Are multi core processors only beneficial to programs designed for multi core processors" .

Software designed for single core performance, or basically not for multi-threaded use, will not perform better on a multi-core CPU. A single core will be doing the work while the others hang out. This is why a lot of older software and some older games do not scale with today's hardware. Adding more cores doesn't work with software not designed to take advantage of multi-threaded processing.

So based on what software you use, you may want to search up multi-threaded performance benchmarks. You may find some don't scale well. You may find some scale great. There's a lot of software that benefits from multi-threaded cores, but have diminishing returns because they were never written with the idea of scaling over an infinite set of cores and basically were written for what was around at the time. Now we have 8~16 cores at the consumer level, which is crazy compared to the early 2000's, and a lot of software just wasn't written with that in mind.

Since you're interested in Dark Table, you may find the following interesting:

https://www.phoronix.c​om …m&px=Darktable-27-Results (external link)

So if you're using things like that primarily, I would not put all your eggs into the CPU. Get a good performance quad/hex/octa-core if you want, but it's pretty clear that the direction of this software is to use GPU through OpenCL instead of scaling with multi-core CPU (i7 6800k, 6 cores, getting spanked hard by cheaper GPU's), so if you want to get the most out of it, get a blend of good CPU, but not top tier, and get a near top-shelf GPU (nVidia for this purpose). The GTX 1060 looks like a very good cost/performance ratio option.

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EverydayGetaway
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Mar 13, 2018 10:23 |  #19

MalVeauX wrote in post #18584438 (external link)
Software designed for single core performance, or basically not for multi-threaded use, will not perform better on a multi-core CPU. A single core will be doing the work while the others hang out. This is why a lot of older software and some older games do not scale with today's hardware. Adding more cores doesn't work with software not designed to take advantage of multi-threaded processing.

So based on what software you use, you may want to search up multi-threaded performance benchmarks. You may find some don't scale well. You may find some scale great. There's a lot of software that benefits from multi-threaded cores, but have diminishing returns because they were never written with the idea of scaling over an infinite set of cores and basically were written for what was around at the time. Now we have 8~16 cores at the consumer level, which is crazy compared to the early 2000's, and a lot of software just wasn't written with that in mind.

Since you're interested in Dark Table, you may find the following interesting:

https://www.phoronix.c​om …m&px=Darktable-27-Results (external link)

So if you're using things like that primarily, I would not put all your eggs into the CPU. Get a good performance quad/hex/octa-core if you want, but it's pretty clear that the direction of this software is to use GPU through OpenCL instead of scaling with multi-core CPU (i7 6800k, 6 cores, getting spanked hard by cheaper GPU's), so if you want to get the most out of it, get a blend of good CPU, but not top tier, and get a near top-shelf GPU (nVidia for this purpose). The GTX 1060 looks like a very good cost/performance ratio option.

Very best,

Not at the moment though. Crypto mining has massively inflated the GPU market right now. I wouldn't recommend anyone make any builds involving any type of GPU until the market comes back down to reasonable pricing.


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davesrose
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Mar 13, 2018 10:28 |  #20

hobowriter wrote in post #18584426 (external link)
My question was pretty specific i.e., "Are multi core processors only beneficial to programs designed for multi core processors" .

Your question also included asking if Shotwell and Dark Table had any multithreading support. To which the answer is yes, and then you started the subject of what computer build you wanted. For recommendations in that, it requires knowing more specs in what you're looking for.


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gjl711
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Post edited 3 months ago by gjl711.
     
Mar 13, 2018 10:48 |  #21

EverydayGetaway wrote in post #18584458 (external link)
Not at the moment though. Crypto mining has massively inflated the GPU market right now. I wouldn't recommend anyone make any builds involving any type of GPU until the market comes back down to reasonable pricing.

Not only are the prices high but a decent GPU is impossible to find especially the Geforce 1050, 1060, 1070, 1080. When you do find them, the price is double or even triple what it was a few months ago.


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EverydayGetaway
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Mar 13, 2018 11:32 |  #22

gjl711 wrote in post #18584481 (external link)
Not only are the prices high but a decent GPU is impossible to find especially the Geforce 1050, 1060, 1070, 1080. When you do find them, the price is double or even triple what it was a few months ago.

Exactly. I hope the market comes down this year, but who knows. I'm tempted to sell one of my 980 Tis, they're going for about triple what I paid for them right now :eek:


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