input on CPU choice on new PC build

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Mike Tourangeau | Forum Activity | Posted: Sun, Jan 27 2019 7:57 PM

I know there are threads that address this in some measure but I am building a new pc for the office and I am trying to choose between AMD and Intel for CPU.

I was planning on using this LINK  but came across this  LINK AMD chip on sale. It looks like a beast and for a great price........ but I would have to buy a graphics card. What do you think? Is a beast like the AMD preferred?

I am planning a M.2 SSD drive as well as 16gb of Ram. I am going to buy tomorrow and then saw this sale......not sure which direction to go.

Posts 277
PJ | Forum Activity | Replied: Sun, Jan 27 2019 9:09 PM

What ever your decision, never buy Celeron - it will bottle neck.

AMD was always better with mathematical processing on lower power consumption. I don't know about the new Ryzen though. I used AMD in the past for programming purposes.

Intel is better if you don't have a dedicated Graphics Card and don't mind about power consumption. In the past Intel was always more stable.

As a user that used both AMD and Intel, I would recommend going with Intel. The new Ryzen could maybe be competition. I ask myself one question, why the $130 discount on Ryzen. This always display a huge red flag. But then, who knows?

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Keep Smiling 4 Jesus :) | Forum Activity | Replied: Sun, Jan 27 2019 9:20 PM

Mike Tourangeau:
I know there are threads that address this in some measure but I am building a new pc for the office and I am trying to choose between AMD and Intel for CPU.

CPU benchmarks => https://browser.geekbench.com/processor-benchmarks shows Intel having 46 models that are faster than the fastest AMD Ryzen.

AMD Ryzen 7 2700X  has a benchmark of 4821 that is 22 % slower than 6167 for an Intel Core i7-8086K  so a computation task of 10 minutes on the Intel Core i7-8086K takes 12.8 minutes on the AMD Ryzen 7 2700X

Keep Smiling Smile

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Dave Hooton | Forum Activity | Replied: Mon, Jan 28 2019 7:04 AM

Keep Smiling 4 Jesus :):
AMD Ryzen 7 2700X  has a benchmark of 4821 that is 22 % slower than 6167 for an Intel Core i7-8086K  

A fairer comparison is Ryzen 7 2700X 3.7 GHz (4820) vs i7-8700K 3.7 GHz (5881); about 18% difference. The 2700X is the successor to the 1800X; which is why the 1800X would be discounted.

Dave
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Mike Tourangeau | Forum Activity | Replied: Tue, Jan 29 2019 5:02 PM

Thanks for the input. I went with the i5 8400, 2.8 Ghz base - 4Ghz Turbo. Seems to be more than capable to handle Logos.

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Dave Hooton | Forum Activity | Replied: Tue, Jan 29 2019 5:31 PM

Mike Tourangeau:

Thanks for the input. I went with the i5 8400, 2.8 Ghz base - 4Ghz Turbo. Seems to be more than capable to handle Logos.

I agree (along with an SSD!).

Dave
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Mike Tourangeau | Forum Activity | Replied: Tue, Jan 29 2019 5:52 PM

I went with a M.2. Incredible read/write speed. Dave, you seem to know a bit about pc’s. Given my processor would you add a GPU or would it not be worth it? If you would add one, what specs?

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Dave Hooton | Forum Activity | Replied: Tue, Jan 29 2019 6:25 PM

Mike Tourangeau:
Given my processor would you add a GPU or would it not be worth it?

It's not a 3D app, so it isn't necessary for Logos. With an i5 on my laptop (and on previous ones), I haven't noticed any difference when I forced Logos to use the GPU. So don't get a GPU unless you are into serious gaming or graphics work.

Dave
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Windows & Android

Posts 547
Kolen Cheung | Forum Activity | Replied: Sun, Feb 17 2019 7:38 PM

PJ:
AMD was always better with mathematical processing on lower power consumption.

This is not true. At least “was always better” wasn’t true. What’s the time period you’re talking about?

Notable factors:

  • Recent advance in 10 nm process in AMD CPU makes it having better power consumption, but this isn’t true until very recently, like a year ago. In fact, AMD was pressing towards 7 nm because they were trying to catch up with Intel in 2018 IIRC. But unfortunately Intel’s 10 nm process, supposed to be out a lot earlier, then on 2018, was further delayed to 2019. (People define the nm processes differently, Intel’s 10 nm is more like AMD/Samsung/Qualcomm’s 7 nm.)

  • Since you’re talking about “mathematical processing”, these are relevant too:

    • Intel’s vectorization unit is much wider, e.g. currently AVX512 is 512 bit wide, and for some CPU there’s 2 such units per core, but AMD only has 256 bit IIRC. This translate into more FLOPS, e.g. 512 comparing to 256 will be double amount of FLOPS.
    • Intel’s compiler, MKL library, etc.: these will generally gives a better performance, sometimes much better performance on Intel’s CPU comparing to not using this and is with AMD (e.g. FFTW with GNU compiler on AMD.)
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