Testing 8 to 64 Cores in a Manufacturing Platform

Testing 8 to 64 Cores in a Production Platform

It’s been a number of months since AMD first introduced their new third era EPYC Milan server CPU line-up. We had initially reviewed the primary SKUS again in March, overlaying the core density optimised 64-core EPYC 7763, EPYC 7713 and the core-performance optimised 32-core EPYC 75F3. Since then, we’ve ben capable of get our palms on a number of new mid and decrease finish SKUs within the type of the brand new 24-core EPYC 7443, the 16-core 7343, in addition to the very curious 8-core EPYC 72F3 which we’ll be reviewing at this time.

What’s additionally modified since our preliminary evaluate again in March, is the discharge of Intel’s newer 3rd era Xeon Scalable processors (Ice Lake SP) with our evaluate of the 40-core Xeon 8330 and 28-core Xeon 6330.

Right this moment’s evaluate shall be centered across the new efficiency numbers of AMD’s EPYC CPUs, for a extra complete platform and structure overview I extremely advocate studying our respective preliminary opinions which go into extra element of the present server CPU panorama:

What’s New: EPYC 7443, 7343, 72F3 Low Core Rely SKUs

By way of new SKUs that we’re testing at this time, as talked about, we’ll be AMD new EPYC 7443, 7343 in addition to the 72F3, mid- to low core-count SKUs that come at way more inexpensive value tags in comparison with the flagship models we had initially reviewed again in March. As a part of the brand new platform swap, we’ll cowl in a bit, we’re additionally re-reviewing the 64-core EPYC 7763 and the 32-core EPYC 75F3 – leading to a number of surprises and resolving a number of the points we’ve recognized with 3rd era Milan in our first evaluate.

AMD EPYC 7003 Processors
Core Efficiency Optimized
  Cores
Threads
Base
Freq
Turbo
Freq
L3
(MB)
TDP Worth
F-Sequence
EPYC 75F3 32 / 64 2950 4000 256
MB
280 W $4860
EPYC 74F3 24 / 48 3200 4000 240 W $2900
EPYC 73F3 16 / 32 3500 4000 240 W $3521
EPYC 72F3 8 / 16 3700 4100 180 W $2468

Beginning off with in all probability the weirdest CPU in AMD’s EPYC 7003 line-up, the brand new 72F3 is kind of the speciality half within the type of it being an 8-core server CPU, but nonetheless that includes the utmost out there platform capabilities in addition to the total 256MB of L3 cache. AMD achieves this by primarily populating the half with 8 chiplet dies with every a full 32MB of L3 cache, however just one core enabled per die. This allows the half (for a server half) comparatively excessive base frequency of three.7GHz, boosting as much as 4.1GHz and touchdown with a TDP of 180W, with the half costing $2468.

The unit is a fairly excessive case of SKU segmentation and focuses on deployments the place per-core efficiency is paramount, or additionally use-cases the place per-core software program licenses vastly outweigh the price of the precise {hardware}. We’re additionally re-reviewing the 32-core 75F3 on this core-performance optimised household, that includes as much as 32 cores, however going for a lot increased 280W TDPs.

AMD EPYC 7003 Processors
Core Density Optimized
  Cores
Threads
Base
Freq
Turbo
Freq
L3
(MB)
TDP Worth
EPYC 7763 64 / 128 2450 3400 256
MB
280 W $7890
EPYC 7713 64 / 128 2000 3675 225 W $7060
EPYC 7663 56 / 112 2000 3500 240 W $6366
EPYC 7643 48 / 96 2300 3600 225 W $4995
P-Sequence (Single Socket Solely)
EPYC 7713P 64 / 128 2000 3675 256 225 W $5010

Within the core-density optimised collection, we’re persevering with on utilizing the 64-core EPYC 7763 flagship SKU which lands in at 280W TDP and a excessive price of $7890 MSRP. Sadly, we not have entry to the EPYC 7713 so we couldn’t re-review this half, and benchmark numbers from this SKU on this evaluate will carry ahead our older scores, additionally being aptly labelled as such in our graphs.

AMD EPYC 7003 Processors
  Cores
Threads
Base
Freq
Turbo
Freq
L3
(MB)
TDP Worth
EPYC 7543 32 / 64 2800 3700 256 MB 225 W $3761
EPYC 7513 32 / 64 2600 3650 128 MB 200 W $2840
EPYC 7453 28 / 56 2750 3450 64 MB 225 W $1570
EPYC 7443 24 / 48 2850 4000 128
MB
200 W $2010
EPYC 7413 24 / 48 2650 3600 180 W $1825
EPYC 7343 16 / 32 3200 3900 190 W $1565
EPYC 7313 16 / 32 3000 3700 155 W $1083
P-Sequence (Single Socket Solely)
EPYC 7543P 32 / 64 2800 3700 256 MB 225 W $2730
EPYC 7443P 24 / 48 2850 4000 128 MB 200 W $1337
EPYC 7313P 16 / 32 3000 3700 155 W $913

Lastly, essentially the most fascinating elements of at this time’s analysis are AMD’s mid- to low-core depend EPYC 7443 and EPYC 7343 CPUs. At 24- and 16-core, the chips characteristic a fraction of the utmost theoretical core counts of the platform, but additionally come at way more inexpensive value factors. These elements ought to particularly be fascinating for deployments that plan on utilizing the platform’s full reminiscence or I/O capabilities, however don’t require the uncooked processing energy of the higher-end elements.

These two elements are additionally outlined by having solely 128MB of L3 cache, which means the chips are working solely 4 lively chiplets, with respectively solely 6 and 4 cores per chiplet lively. The TDPs are additionally extra affordable at 200W and 190W, with additionally respectively decrease pricing of $2010 and $1565.

Following Intel’s 3rd era Xeon Ice Lake SP and our testing of the Xeon 28-core 6330 which lands in at an MSRP of $1894, it’s right here the place we’ll be seeing essentially the most fascinating efficiency and worth comparability for at this time’s evaluate.

Take a look at Platform Change – Manufacturing Milan Board from GIGABYTE: MZ72-HB0 (rev. 3.0)

In our preliminary Milan evaluate, we sadly needed to work with AMD to remotely check latest Milan elements inside the firm’s native datacentre, as our personal Daytona reference server platform encountered an unrecoverable {hardware} failure.

Typically, if doable, we additionally favor to check issues on manufacturing techniques as they symbolize a extra mature and consultant firmware stack.

Just a few weeks in the past, at Computex, GIGABYTE had revealed their latest revision of the corporate’s dual-socket EPYC board, the E-ATX MZ72-HB0 rev.3.0, which now comes with out-of-box assist for the most recent 3rd era Milan elements (The prior rev.1.0 boards don’t assist the brand new CPUs).

The E-ATX form-factor permits for extra test-bench setups and noiseless operation (Because of Noctua’s large NH-U14S TR4-SP3 coolers) in additional typical workstation setups.

The platform change away from AMD’s Daytona reference server to the GIGABYTE system even have some important impacts regarding the 3rd era Milan SKUs’ efficiency, behaving notably totally different by way of energy traits than what we noticed on AMD’s system, permitting the chips to realize even increased efficiency than what we had examined and revealed in our preliminary evaluate.

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