7nm AMD EPYC “Rome” CPU with 64C/128T to Cost $8K (56 Core Intel Xeon: $25K-50K)

#1

Post by areejs » Sat, Jun 22, 2019, 8:28 AM UTC

7nm AMD EPYC “Rome” CPU with 64C/128T to Cost $8K (56 Core Intel Xeon: $25K-50K)
techquila.co.in

Re: 7nm AMD EPYC “Rome” CPU with 64C/128T to Cost $8K (56 Core Intel Xeon: $25K-50K)

#2

Post by gigatexal » Sat, Jun 22, 2019, 9:50 AM UTC

If you need AVX/AVX2/AVX512 then go intel. Otherwise this AMD chip would be my choice for most applications.

Re: 7nm AMD EPYC “Rome” CPU with 64C/128T to Cost $8K (56 Core Intel Xeon: $25K-50K)

#3

Post by rat9988 » Sat, Jun 22, 2019, 10:05 AM UTC

gigatexal wrote: post #2

If you need AVX/AVX2/AVX512 then go intel. Otherwise this AMD chip would be my choice for most applications.

I'm not sure intel has advantage in avx 2 with the new ryzen. That said I got this information from some unsourced comment in hacker news, it might be totally wrong.

Re: 7nm AMD EPYC “Rome” CPU with 64C/128T to Cost $8K (56 Core Intel Xeon: $25K-50K)

#4

Post by agumonkey » Sat, Jun 22, 2019, 10:06 AM UTC

gigatexal wrote: post #2

If you need AVX/AVX2/AVX512 then go intel. Otherwise this AMD chip would be my choice for most applications.

does avx512 bring that much of a perf advantage ?

Re: 7nm AMD EPYC “Rome” CPU with 64C/128T to Cost $8K (56 Core Intel Xeon: $25K-50K)

#5

Post by themgt » Sat, Jun 22, 2019, 10:13 AM UTC

Back in the early 2000s Apple was getting crushed because Moto/IBM's PowerPC couldn't keep up with the 880lb gorilla Intel. Who could have predicted even a few years ago Apple would wind up in a similar situation, yet this time for having bet on Intel?

Could the 8 core Mac Pro have been $3650 with a $650 Rome CPU, vs. the reality of $6k with a $3k Xeon?

Re: 7nm AMD EPYC “Rome” CPU with 64C/128T to Cost $8K (56 Core Intel Xeon: $25K-50K)

#6

Post by reitzensteinm » Sat, Jun 22, 2019, 10:14 AM UTC

gigatexal wrote: post #2

If you need AVX/AVX2/AVX512 then go intel. Otherwise this AMD chip would be my choice for most applications.

I'd say it's a bit early to be making statements like that; Zen 2 has native 256 bit vector units, and might yet do OK with AVX2 code vs Intel processors.

AVX512 though, even if you don't use the full width registers (eg to avoid throttling), the new instructions are very useful and not at all present on Zen 2. I wouldn't be surprised if Zen 3 kept 256 bit vector units, but supported the AVX512 instruction set.

Re: 7nm AMD EPYC “Rome” CPU with 64C/128T to Cost $8K (56 Core Intel Xeon: $25K-50K)

#7

Post by leemailll » Sat, Jun 22, 2019, 10:15 AM UTC

themgt wrote: post #5

Back in the early 2000s Apple was getting crushed because Moto/IBM's PowerPC couldn't keep up with the 880lb gorilla Intel. Who could have predicted even a few years ago Apple would wind up in a similar situation, yet this time for having bet on Intel? Could the 8 core Mac Pro have been $3650 with a $650 Rome CPU, vs. the reality of $6k with a $3k Xeon?

I suspect apple will release comps with amd cpus, but hackintosh with amd is already good to go

Re: 7nm AMD EPYC “Rome” CPU with 64C/128T to Cost $8K (56 Core Intel Xeon: $25K-50K)

#8

Post by gigatexal » Sat, Jun 22, 2019, 10:22 AM UTC

agumonkey wrote: post #4

gigatexal wrote: post #2

If you need AVX/AVX2/AVX512 then go intel. Otherwise this AMD chip would be my choice for most applications.

does avx512 bring that much of a perf advantage ?

For software that takes advantage of it it does.

Re: 7nm AMD EPYC “Rome” CPU with 64C/128T to Cost $8K (56 Core Intel Xeon: $25K-50K)

#9

Post by reitzensteinm » Sat, Jun 22, 2019, 10:30 AM UTC

Note that the 1P variant costs only $4,955, or under $80 per core. The consumer chips cost roughly $50/core, making this the flattest ramp I can personally remember.

Re: 7nm AMD EPYC “Rome” CPU with 64C/128T to Cost $8K (56 Core Intel Xeon: $25K-50K)

#10

Post by bitL » Sat, Jun 22, 2019, 10:40 AM UTC

reitzensteinm wrote: post #6

gigatexal wrote: post #2

If you need AVX/AVX2/AVX512 then go intel. Otherwise this AMD chip would be my choice for most applications.

I'd say it's a bit early to be making statements like that; Zen 2 has native 256 bit vector units, and might yet do OK with AVX2 code vs Intel processors. AVX512 though, even if you don't use the full width registers (eg to avoid throttling), the new instructions are very useful and not at all present on Zen 2. I wouldn't be surprised if Zen 3 kept 256 bit vector units, but supported the AVX512 instruction set.

Moreover, AVX2 operates at full frequency on Zen 2. AVX-512 heavily downclocks CPU; not sure about AVX2 loads on Intel right now (some people complained about AVX2 throttling on Skylake X).