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  #1  
Old 17-11-19, 04:14 PM
FTLN FTLN is offline
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3950X vs 7980XE

Ok, trying to get my head around this one, feel free to put me straight :

Hardware Unboxed benchmark of 3950x overclocked to 4.3 all core gives for Blender Benchmark "Quick" 463 seconds

I just did the same benchmark and my 7980xe @ 4ghz (due to avx negative offset) and it completes in 462.95 seconds

Now the maths:

3950X 16x4.3=68.8ghz

7980xe 18x4.0=72ghz


3950x has 25% IPC gain over intel which would put this chip clearly in front of the 7980xe, why is the 3950X not winning against my cpu ??

**********************************************

3950x (hardware unboxed:


My 7980xe https://opendata.blender.org/benchma...7-52e4cc4660a4 :

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  #2  
Old 17-11-19, 05:51 PM
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Simple. 7980XE is a much better CPU overall and it has more cores. There are a lot of differences. Quad channel memory is not always important but still a factor. Intel has much, much better inter core latency, and general latency inside the CPU. AMD is trying to compensate for this with insane amounts of cache but still can't get nowhere near. Another thing is that AMD optimized their CPUs for tile based rendering, and similarly shaped tasks. So if you need it for rendering, encoding AMD is the way to go. But in general and real-time tasks Intel wins.

You will see 3950X beat or go toe to toe with 7980XE in Blender or similar tile base rendering workload even though it has less cores. But look what Intel does to AMD in real time benchmark.



It also depends on your memory settings, capacity, etc, vs their test system. IPC gains are there only for some scenarios, and it is possible that AMD is optimizing micro code for them.
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Old 17-11-19, 07:35 PM
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Cheers, it's clear now.

I been getting news feeds on my phone the last few days saying how 3950x is way ahead of even the upcoming 10980xe. Can't wait for the TTL review to come online.
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Old 17-11-19, 09:30 PM
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Another thing. Most of the reviews are sort of biased towards rendering and encoding because YouTubers do that. Most of the tests are tiled rendering based so that is why you get spammed with 3950X beats 9980XE.

Don't get me wrong 3950X is a beast, but only at tiled rendering types of workloads. For everything else Intel is better.

For me it is like comparing apples and oranges. AMD does rendering and encoding exceptionally, but it is not so good at real-time actions like editing workflow etc... On the other side Intel rocks at real-time tasks. Workflow on Intel is much smoother, but it sucks at rendering compared to AMD. Wendell from level1 and EposVOX did astonishing work in testing various configurations and came to the conclusion that your editing system should be Intel (even 9700K over Threadripper), and your rendering station should be AMD.

Comparing one to another really makes no sense and i really hate that reviewers don't emphasize on that more. They were not meant for the same tasks. GN did start to mention who is specific CPU meant for, but still not enough to raise public awareness.

I really hate that none of the reviewers does Music production tests. For Ryzen 3000 it was only one. For example Intel 7980XE beats any AMD CPU so hard in DAWBench tests that there is no competition at all. But somehow no one thought to mention that. Intel CPUs beat AMDs in every single AutoDesk application... No one mentioned that.

But as i have said they need to stop comparing them and click bait who beats who in Cinebench and focus more on recommending the right CPU for the right task.
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Old 17-11-19, 09:58 PM
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AlienALX AlienALX is offline
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Wrong comparison. Wait until TR releases, then make your comparison.

You're comparing a desktop CPU that will work in a £120 motherboard to a very expensive HEDT platform.

Try and remember, Intel were selling 6/12 CPUs for more money than this for years. My I7 3970x was a grand at launch.

However again X79 was a very expensive platform to buy into. Like, at least £250 for a entry level board and it's pretty much the same on X299, and X399 and so on. My X99 Godlike was £450 new.
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Old 18-11-19, 01:51 AM
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Quote:
Originally Posted by AlienALX View Post
Wrong comparison. Wait until TR releases, then make your comparison.

You're comparing a desktop CPU that will work in a £120 motherboard to a very expensive HEDT platform.

Try and remember, Intel were selling 6/12 CPUs for more money than this for years. My I7 3970x was a grand at launch.

However again X79 was a very expensive platform to buy into. Like, at least £250 for a entry level board and it's pretty much the same on X299, and X399 and so on. My X99 Godlike was £450 new.
Intel was robbing people for years that's a fact. That is because they could. It was Intel or nothing. Now they are selling CPUs for the half of the original asking price because they have to. Thank you AMD for that.

You are completely right about wrong comparison. And to expand on that... This generation of CPUs is so different that they need to be compared by use case and not by one CPU to rule them all like it was few years back. You can't even compare mainstream red vs mainstream blue, or HEDT red vs HEDT blue.
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  #7  
Old 06-12-19, 07:26 AM
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Had a little play with the 3950x last night, it just nipped the lead in front of the 7980xe in Cinebench 15 - [email protected]@1.35v / [email protected]@1.275v

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Old 06-12-19, 07:32 AM
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Geekbench 5 comparison for the two : https://browser.geekbench.com/v5/cpu...aseline=737019
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