AMD Navi 23 Radeon RX GPUs Feature 32 MB Infinity Cache, RDNA 2 Powered Van Gogh APUs & CDNA 2 Powered Instinct MI200 Without Infinity Cache

In the latest Linux Kernel Patch, AMD has confirmed the Infinity Cache sizes of its upcoming RDNA 2 Radeon RX GPUs based on the Navi 23 SKU. The company has also confirmed that neither RDNA 2 powered Van Gogh nor CDNA 2 powered Instinct accelerators will be featuring its Infinity Cache technology.

AMD RDNA 2 Navi 23 GPU Powered Radeon RX GPUs To Feature 32 MB Infinity Cache, A Quarter of Navi 21's Infinity Cache Pool

The information was spotted by Coelacanth-Dream (via Kepler_L2) and confirms cache sizes & GPU configurations of several RDNA 2 and CDNA 2 GPUs. The AMD Infinity Cache was first introduced on the Radeon RX 6000 series graphics cards featuring the RDNA 2 architecture. The Navi 21 SKU, codenamed Big Navi, was the first to get it but it was followed by the Navi 22 SKU recently & now we are also going to get a third SKU in the form of Navi 23.

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AMD RDNA 2 Powered Navi 23 GPU For Radeon RX 6000 Graphics Cards

The patch confirms the Infinity Cache size which is listed as a level-3 cache (L3) for all three RDNA 2 GPUs that will be coming to desktop PCs. The Navi 21 GPU 'Sienna Cichlid' features the biggest size of 128 MB Infinity Cache followed by the Navi 22 GPU 'Navy Flounder' which features 96 MB of L3 or Infinity Cache. The AMD Navi 23 GPU 'Dimgry Cavefish' is going to be the next GPU in the lineup of Radeon RX 6000 series graphics cards and is going to feature 32 MB of Infinity Cache. That's a quarter of the L3 size featured on the Big Navi GPU.

It was previously expected that Navi 23 Radeon RX 6000 GPUs would feature 64 MB of Infinity Cache but that rumor is debunked now. The specifications of the Navi 23 GPU suggest a total of 2048 stream processors & 32 raytracing units inside the GPU package. The GPU will also be packed with 32 MB of Infinity Cache which will help it boost its bandwidth by a huge margin. For memory, we are looking at up to 8 GB GDDR6 capacity that will operate across a 128-bit bus interface and offer pin speeds of up to 16 Gbps. This should bring the total bandwidth to 256 GB/s.  The Navi 23 GPU will also be the smallest of the Navi 2X family with a die size reported at around 236mm2.

AMD Radeon RX 6000 Series "RDNA 2" Graphics Card Lineup:

Graphics Card	AMD Radeon RX 6950 XT	AMD Radeon RX 6900 XT	AMD Radeon RX 6800 XT	AMD Radeon RX 6800	AMD Radeon RX 6750 XT	AMD Radeon RX 6700 XT	AMD Radeon RX 6700	AMD Radeon RX 6650 XT	AMD Radeon RX 6600 XT	AMD Radeon RX 6600	AMD Radeon RX 6500 XT	AMD Radeon RX 6400
GPU	Navi 21 KXTX	Navi 21 XTX	Navi 21 XT	Navi 21 XL	Navi 22 KXT	Navi 22 XT	Navi 22 XL	Navi 23 KXT	Navi 23 (XT)	Navi 23 (XL)	Navi 24 (XT)	Navi 24 (XL)
Process Node	7nm	7nm	7nm	7nm	7nm	7nm	7nm	7nm	7nm	7nm	6nm	6nm
Die Size	520mm2	520mm2	520mm2	520mm2	336mm2	336mm2	336mm2	237mm2	237mm2	237mm2	107mm2	107mm2
Transistors	26.8 Billion	26.8 Billion	26.8 Billion	26.8 Billion	17.2 Billion	17.2 Billion	17.2 Billion	11.06 Billion	11.06 Billion	11.06 Billion	5.4 Billion	5.4 Billion
Compute Units	80	80	72	60	40	40	36	32	32	28	16	12
Stream Processors	5120	5120	4608	3840	2560	2560	2304	2048	2048	1792	1024	768
TMUs/ROPs	320 / 128	320 / 128	288 / 128	240 / 96	160/64	160/64	144/64	128/64	128/64	112/64	64/32	48/32
Game Clock	2116 MHz	2015 MHz	2015 MHz	1815 MHz	2495 MHz	2424 MHz	2330 MHz	2410 MHz	2359 MHz	2044 MHz	2610 MHz	2039 MHz
Boost Clock	2324 MHz	2250 MHz	2250 MHz	2105 MHz	2600 MHz	2581 MHz	2495 MHz	2635 MHz	2589 MHz	2491 MHz	2815 MHz	2321 MHz
FP32 TFLOPs	23.80 TFLOPs	23.04 TFLOPs	20.74 TFLOPs	16.17 TFLOPs	13.31 TFLOPs	13.21 TFLOPs	11.50 TFLOPs	10.79 TFLOPs	10.6 TFLOPs	9.0 TFLOPs	5.7 TFLOPs	3.5 TFLOPs
Memory Size	16 GB GDDR6 +128 MB Infinity Cache	16 GB GDDR6 +128 MB Infinity Cache	16 GB GDDR6 +128 MB Infinity Cache	16 GB GDDR6 +128 MB Infinity Cache	12 GB GDDR6 + 96 MB Infinity Cache	12 GB GDDR6 + 96 MB Infinity Cache	10 GB GDDR5 + 80 MB Infinity Cache	8 GB GDDR6 + 32 MB Infinity Cache	8 GB GDDR6 + 32 MB Infinity Cache	8 GB GDDR6 + 32 MB Infinity Cache	4 GB / 8 GB GDDR6 + 16 MB Infinity Cache	4 GB GDDR6 + 16 MB Infinity Cache
Memory Bus	256-bit	256-bit	256-bit	256-bit	192-bit	192-bit	160-bit	128-bit	128-bit	128-bit	64-bit	64-bit
Memory Clock	18 Gbps	16 Gbps	16 Gbps	16 Gbps	18 Gbps	16 Gbps	16 Gbps	17.5 Gbps	16 Gbps	14 Gbps	18 Gbps	14 Gbps
Bandwidth	576 GB/s	512 GB/s	512 GB/s	512 GB/s	432 GB/s	384 GB/s	320 GB/s	280 GB/s	256 GB/s	224 GB/s	144 GB/s	112 GB/s
TDP	335W	300W	300W	250W	250W	230W	220W	176W	160W	132W	107W	53W
Price	$1099 US	$999 US	$649 US	$579 US	$549 US	$479 US	TBD	$399 US	$379 US	$329 US	$199 US	$159 US?

AMD CDNA 2 Powered Aldebaran GPU For Instinct MI200 HPC Accelerators

The other GPU is Aldebaran which is the codename for the chip powering AMD's Instinct MI200 accelerator. According to the data, the GPU carries 16 KB of L1 cache per CU which makes up 2 MB of the total L1 cache considering that the GPU will be packing 128 Compute Units. The GPU also carries 8 MB of shared L2 cache but carries 14 CUs per Shader Engine compared to 16 CUs per SE in the previous Instinct lineup. Regardless, it is stated that each CU on Aldebaran GPUs will have a significantly higher computing output.

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. 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.

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

AMD RDNA 2 Powered Van Gogh APUs For Ultra-Low-Power Notebooks

The Patch also confirms that the hotly anticipated RDNA 2 and Zen 2 powered Van Gogh APUs for ultra-low-power notebooks won't be featuring Infinity Cache. The Van Gogh APUs do feature a 128 KB GL1 cache, 1 MB of L2 cache but the L3 cache is non-existent.

It makes sense for an entry-tier RDNA 2 iGPU which will be relying on LPDDR4X or even LPDDR5 memory for its primary memory bandwidth requirements. These APUs will be fabricated on the 7nm process node but we don't have an exact figure of what the maximum CU count on the RDNA 2 chip would be.

AMD GPU cache info	RDNA L1 (GL1)	L2 (TCC)	L3 / Infinity Cache (MALL)
Raven / Picasso Renoir / Lucienne / Cezanne	---	1M	---
Raven2	---	128K 2	---
Vega20	---	4M	---
Arcturus	---	8M?	---
Aldebaran	---	8M	---
Navi10 / Navi12	128K	4M	---
Navi14	128K	2M	---
Van Gogh	128K	1M	---
Sienna Cichlid	128K	4M	128M
Navy Flounder	128K	3M	96M
Dimgrey Cavefish	128K	2M	32M

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