AMD Instinct MI200 CDNA 2 GPU Powered Accelerator Reportedly Launching In 2021, Could Feature MCM Architecture

AMD launched its first CDNA GPU-based accelerator, the Instinct MI100, last year and the latest reports suggest that its successor, the MI200, could launch this year. The AMD Instinct accelerators feature the CDNA architecture that is designed for compute-intensive and HPC workloads and the 2nd gen of these chips is going to bring a lot of new features and technologies.

AMD Instinct MI200 Reportedly Features CDNA 2 MCM Architecture & Launches In Late 2021

The details were posted by Komachi over at his Twitter feed and from the looks of it, the Instinct MI200 will be replacing the MI100 as the new flagship accelerator for HPC. Based on the naming convention itself, it looks like MI200 will be twice as fast as Instinct MI100 but to achieve this, AMD is expected to go all out with its MCM design.

The Instinct MI200 is expected to be launching alongside AMD's EPYC Trento chips. The Trento line is going to be a slight variation of the Milan chips for the Supercomputer sector. They are not going to be similar to Genoa as that features the next-gen Zen 4 cores but it should offer a range of new capabilities which we will learn close to launch. As for MI200, it is expected to launch in 2021 but we should expect a late Q4 arrival since MI100 was introduced in a similar timeframe (Q4 2020).

Other than that, the AMD MI200 is listed as an MCM 'Special FIO Accelerator' for HPE Cray EX. That could explain where the MI200 name comes from. An MCM (Multi-Chip-Module) design could mean that we could still be looking at a Vega Compute GPU but two of them fused over the same PCB & connected by a next-generation Infinity Fabric interconnect.

AMD Radeon Instinct Accelerators

Accelerator Name	AMD Instinct MI400	AMD Instinct MI350X	AMD Instinct MI300X	AMD Instinct MI300A	AMD Instinct MI250X	AMD Instinct MI250	AMD Instinct MI210	AMD Instinct MI100	AMD Radeon Instinct MI60	AMD Radeon Instinct MI50	AMD Radeon Instinct MI25	AMD Radeon Instinct MI8	AMD Radeon Instinct MI6
CPU Architecture	Zen 5 (Exascale APU)	N/A	N/A	Zen 4 (Exascale APU)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
GPU Architecture	CDNA 4	CDNA 3+?	Aqua Vanjaram (CDNA 3)	Aqua Vanjaram (CDNA 3)	Aldebaran (CDNA 2)	Aldebaran (CDNA 2)	Aldebaran (CDNA 2)	Arcturus (CDNA 1)	Vega 20	Vega 20	Vega 10	Fiji XT	Polaris 10
GPU Process Node	4nm	4nm	5nm+6nm	5nm+6nm	6nm	6nm	6nm	7nm FinFET	7nm FinFET	7nm FinFET	14nm FinFET	28nm	14nm FinFET
GPU Chiplets	TBD	TBD	8 (MCM)	8 (MCM)	2 (MCM) 1 (Per Die)	2 (MCM) 1 (Per Die)	2 (MCM) 1 (Per Die)	1 (Monolithic)	1 (Monolithic)	1 (Monolithic)	1 (Monolithic)	1 (Monolithic)	1 (Monolithic)
GPU Cores	TBD	TBD	19,456	14,592	14,080	13,312	6656	7680	4096	3840	4096	4096	2304
GPU Clock Speed	TBD	TBD	2100 MHz	2100 MHz	1700 MHz	1700 MHz	1700 MHz	1500 MHz	1800 MHz	1725 MHz	1500 MHz	1000 MHz	1237 MHz
INT8 Compute	TBD	TBD	2614 TOPS	1961 TOPS	383 TOPs	362 TOPS	181 TOPS	92.3 TOPS	N/A	N/A	N/A	N/A	N/A
FP16 Compute	TBD	TBD	1.3 PFLOPs	980.6 TFLOPs	383 TFLOPs	362 TFLOPs	181 TFLOPs	185 TFLOPs	29.5 TFLOPs	26.5 TFLOPs	24.6 TFLOPs	8.2 TFLOPs	5.7 TFLOPs
FP32 Compute	TBD	TBD	163.4 TFLOPs	122.6 TFLOPs	95.7 TFLOPs	90.5 TFLOPs	45.3 TFLOPs	23.1 TFLOPs	14.7 TFLOPs	13.3 TFLOPs	12.3 TFLOPs	8.2 TFLOPs	5.7 TFLOPs
FP64 Compute	TBD	TBD	81.7 TFLOPs	61.3 TFLOPs	47.9 TFLOPs	45.3 TFLOPs	22.6 TFLOPs	11.5 TFLOPs	7.4 TFLOPs	6.6 TFLOPs	768 GFLOPs	512 GFLOPs	384 GFLOPs
VRAM	TBD	HBM3e	192 GB HBM3	128 GB HBM3	128 GB HBM2e	128 GB HBM2e	64 GB HBM2e	32 GB HBM2	32 GB HBM2	16 GB HBM2	16 GB HBM2	4 GB HBM1	16 GB GDDR5
Infinity Cache	TBD	TBD	256 MB	256 MB	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Memory Clock	TBD	TBD	5.2 Gbps	5.2 Gbps	3.2 Gbps	3.2 Gbps	3.2 Gbps	1200 MHz	1000 MHz	1000 MHz	945 MHz	500 MHz	1750 MHz
Memory Bus	TBD	TBD	8192-bit	8192-bit	8192-bit	8192-bit	4096-bit	4096-bit bus	4096-bit bus	4096-bit bus	2048-bit bus	4096-bit bus	256-bit bus
Memory Bandwidth	TBD	TBD	5.3 TB/s	5.3 TB/s	3.2 TB/s	3.2 TB/s	1.6 TB/s	1.23 TB/s	1 TB/s	1 TB/s	484 GB/s	512 GB/s	224 GB/s
Form Factor	TBD	TBD	OAM	APU SH5 Socket	OAM	OAM	Dual Slot Card	Dual Slot, Full Length	Dual Slot, Full Length	Dual Slot, Full Length	Dual Slot, Full Length	Dual Slot, Half Length	Single Slot, Full Length
Cooling	TBD	TBD	Passive Cooling	Passive Cooling	Passive Cooling	Passive Cooling	Passive Cooling	Passive Cooling	Passive Cooling	Passive Cooling	Passive Cooling	Passive Cooling	Passive Cooling
TDP (Max)	TBD	TBD	750W	760W	560W	500W	300W	300W	300W	300W	300W	175W	150W

Do note that AMD's CDNA 2 GPU will be fabricated on a brand new process node & are confirmed to feature a 3rd Generation AMD Infinity architecture that extends to Exascale by allowing up to 8-Way coherent GPU connectivity.

According to Coelacanth's Dream (via Videocardz), it is reported that the MI200 accelerator will utilize a new variant of the GFX900 GPU architecture (Vega) known as GFX90A which adds support for full-rate FP64 compute capabilities. Once again, the AMD MI200 accelerator sounds like it will go ahead with NVIDIA's future Lovelace MCM GPUs for HPC market.

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