Intel and AMD CPU

uggoslay

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Aug 13, 2017
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Hello , I have one question that may look stupid , but I need one correct answer out of the preferences of users AMD and Intel .

I'm going to give one example : We have 2 CPUs , one Quad Core CPU 4.5Ghz i7 from intel , and we have another CPU from AMD with the same clock speed , memory cache , and 8 threads .
The question is : Are both going to have the same performance ?
What do I mean with performance ? Well , giving one example , the time to render a video using only CPU , or encoding one video or other tasks that demand more CPU .

This same question can be asked also for the 8core CPU and other .

Thanks for your time and answer .
 
Solution
No they will not be the same. It comes down to instructions per cycle, i.e .how much can it do on one clock tick, i.e. one of it's 4.5 Billion clock ticks per second.

Currently intel has a better performance on a single thread than AMD at the same clock speed, it also clocks higher. So for your notional 8 core CPU's, intel would be better even if AMD could reach 4.5, which it can't.

BUT

For a given price point you'll get more AMD cores than Intel cores, so for applications that are highly threaded, encoding for example, you'll get better performance on AMD, but if your applications are not highly threaed, or are maxed out at 4 cores then Intel would be better.

HOWEVER

For the average user it's a question of whether you'll get...
No they will not be the same. It comes down to instructions per cycle, i.e .how much can it do on one clock tick, i.e. one of it's 4.5 Billion clock ticks per second.

Currently intel has a better performance on a single thread than AMD at the same clock speed, it also clocks higher. So for your notional 8 core CPU's, intel would be better even if AMD could reach 4.5, which it can't.

BUT

For a given price point you'll get more AMD cores than Intel cores, so for applications that are highly threaded, encoding for example, you'll get better performance on AMD, but if your applications are not highly threaed, or are maxed out at 4 cores then Intel would be better.

HOWEVER

For the average user it's a question of whether you'll get 100fps(AMD) or 140fps(Intel) when gaming, both will be perfectly usable and acceptable. For encoding, it's a question of whether it'll take 20mins(AMD) or 22mins(Intel). So both are great, it's actually made our life really difficult, prior to Ryzen there was no contest, no reason to get AMD, now it too close to call and both are great choices.

https://www.anandtech.com/show/11170/the-amd-zen-and-ryzen-7-review-a-deep-dive-on-1800x-1700x-and-1700/20
 
Solution

zoltan.boese

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Jan 30, 2018
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same or similar release date plus same number of cores/threads plus ideantical clock speed = intel wins .
(applies to anything since core 2 duo times)
but obviously you can´t very well compare old core 2 quad to ryzen 1300x for example .
only the processors of the same/similar time period for more accuracy .

since core 2 duo and especially i5 2500K times AMD is just trying to catch up
and compensate lower single core performance with lower price or more cores/threads for the same price .

i5 2500K beats any quad core phenom II

FX architecture was a miss all together
(first revision was terrible , second was better and a decent choice for low budget builds but
any quad core intel of that time period was better than amd 6 core and i7 was the undeniable champion)

i3 8100 beats ryzen 1200/1300x
i7 7700K beats ryzen 1500x
i7 8700K beats ryzen 1600x

ryzen 1700x / 1800x might be better for some specific workload tasks than i7 8700K
but overall i7 is still a superior chip despite lower core/thread count .