Alleged AMD EPYC ‘Rome’ 7nm Based 64 Core Processor Performance Leaks Out (opens in new tab)

(wccftech.com)

45 pointst3f7y ago11 comments

11 comments

11 comments · 5 top-level

CoolGuySteve7y ago· 2 in thread

We already saw that the Threadripper 2990 is starved for bandwidth between Zen packages due to the infinity fabric design.

So you get incredible cinebench performance (and some other 'embarrassingly parallel' workloads), but it doesn't scale to other kinds of programs that have more interthread/interprocess communication.

I guess it remains to be seen what happens with EPYC, but my initial guess is that it will have a similar infinity fabric design to hit 64 cores/128 hyperthreads.

BTW has anyone done an R mclapply benchmark on Threadripper 2990? I was set to buy one until I saw the uneven benchmark scores.

TheGuyWhoCodes7y ago

Yes, infinity fabric has limitations. Threadripper suffers in memory intensive workloads because only half of the CCXs have a dedicated memory controller thus some cores need to talk to another CCX to access memory. On EPYC each CCX has its own memory controller so it's less of an issue.

jesuslop7y ago

Bad interthread is tolerable as long as concurrent running from cache is good

homero7y ago· 2 in thread

AMD needs their own foundry again

foepys7y ago

Global Foundries just recently scrapped their 7nm process because it was too expensive. It's to AMD's advantage to not have a foundry.

On the other hand it's not good for the market in the long run when TSMC has a monopoly on 7nm...

uluyol7y ago

There is also Samsung doing 7 nm.

bryanlarsen7y ago· 1 in thread

Twice the number of cores compared to first generation EPYC with its main competitor misfiring. So do they go for profit and double the price or go for market share and keep it the same? As both a consumer and a stock holder, I'm hoping for closer to the latter.

nwmcsween7y ago

Supply vs demand but it would be smart to discount low end server class CPUs for market share (not the 64 core CPU).

mrep7y ago· 1 in thread

Anyone here familiar with overall performance / server costs to give an insight if AMD might actually become competitive considering with all the hype around AMD these days, I have still yet to see any of the 3 major providers offer an AMD chip?

patrickg_zill7y ago

I don't know about offering the latest chips, but Dell and HP at least, have offered AMD based servers for many years now...?

dougmwne7y ago

>You heard it, right folks, AMD’s 2019 CPU family is designed to tackle the Intel 10nm Ice Lake Xeons favorably and things are looking really good for AMD as their Rome CPU family will only be competing against Intel’s 14nm++ server refreshed family, aka Cascade Lake-SP.

More evidence that AMD may soon pull ahead in the performance race as they take good advantage of Intel's 10nm stumble.

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