Product	NVIDIA® A40 GPU Computing Accelerator - 48GB GDDR6 - PCIe 4.0 x16 - Passive Cooling (w/o CEC)	NVIDIA® RTX A2000 - 12GB GDDR6 - PCIe 4.0 x16 - Active Cooling (4x mDP)	NVIDIA® RTX A4000 - 16GB GDDR6 - PCIe 4.0 x16 - Active Cooling (4xDP)	NVIDIA® RTX A6000 - 48GB GDDR6 - PCIe 4.0 x16 - Active Cooling (4xDP)
Action	Select	Select	Select	Select
Main Specifications
Product Series	Nvidia A40
Core Type	NVIDIA TENSOR
Host Interface	PCI Express 4.0 x16	PCI Express 4.0 x16	PCI Express 4.0 x16	PCI Express 4.0 x16
GPU Architecture	Ampere
Product Type		Workstation	Workstation	Workstation
Product Line		NVIDIA Professional Graphics	NVIDIA Professional Graphics	NVIDIA Professional Graphics
Memory Technology		GDDR6 with ECC	GDDR6 with ECC	GDDR6
Memory Capacity		12 GB GDDR6 with ECC	16 GB GDDR6 with ECC	48 GB
Max Displays		4 Displays	4 Displays
Detailed Specifications
Streaming Processor Cores	10752 CUDA Cores	3328 CUDA Cores	6144 CUDA Cores	10752 Shading Units
NVIDIA Tensor Cores	336 Tensor Cores	104	192	336
NVIDIA RT Cores	84 RT Cores	26	48	84
Memory Clock Speed		6001 MHz		2000 MHz 16 Gbps effective
Memory Interface	384-bit	192-bit	256-bit	384-bit
Memory Speeds (GT/s)	14.5Gbps GDDR6
Max Memory Size	48 GB GDDR6 with error-correcting code (ECC)
Max Memory Bandwidth	696 GB/s
Total NVLink Bandwidth	NVIDIA NVLink 112.5 GB/s (bidirectional) PCIe Gen4 16 GB/s
Tensor Performance		63.9 TFLOPS
NVIDIA CUDA™ Technology			Yes	Yes
Transistor Count		13.25 Billion	17.4 Billion	28.3 Billion
DisplayPort Connectors	3x DisplayPort 1.4 A40 is configured for virtualization by default with physical display connectors disabled. The display outputs can be enabled via management software tools.
Cooling	Passive
Dual Slot	2-slot Low-profile
Dimensions	4.4" (H) x 10.5" (L)	2.713" H x 6.6" L	4.4” H x 9.5” L	4.4" (H) x 10.5" (L)
Lithography	Samsung 8nm	8nm	8nm	Samsung 8nm
Supplementary Power Connectors	1x 8-pin CPU (EPS12V)		1x 6-pin PCIe	1x 8-pin EPS
Max Graphics Card Power (W)	300W	70W	140W	300W
Processor		Ampere	Ampere (GA104)	Ampere (GA102)
Memory Bandwidth		288 GB/sec	448 GB/sec	768 GB/s
Core Clock Speed				1455 MHz Base Clock 1860 MHz Boost Clock
L2 Cache Size				6 MB
API Support				CUDA 8.5, OpenCL 2.0 Shader Model 6.5, OpenGL 4.6, DirectX 12 Ultimate (12_2), Vulkan 1.2
Texture Fill Rate				625 GTexel/s
Graphics Resolution		2x 7680 x 4320 at 60 Hz	Max Digital Resolution: 7680 x 4320 x36 bpp at 60 Hz	7680 x 4320 x36 bpp at 60 Hz
Peak Double Precision FP64 Performance				1,250 GFLOPS (1:32)
Peak Single Precision FP32 Performance		8.0 TFLOPS		38.7 TFLOPS
Peak Half Precision FP16 Performance				40.00 TFLOPS (1:1)
Deep Learning TFLOPS			153.4 TFLOPS
Multi-GPU Scalability				NVLINK 2-way low profile (2-slot and 3-slot bridges) connects 2x NVIDIA RTX A6000
NVLink Interconnect				112.5 GB/s (bidirectional)
RT Core Performance		15.6 TLOPS
VR Ready				Yes
Vulkan API				1.2
DisplayPort Output			4x DisplayPort 1.4a	4x DisplayPort 1.4a
Mini DisplayPort Output		4x mDP Latching
Minimum Recommended Power, Single Card (W)			300W	700W
Minimum Recommended Power, 2-Way (W)			500	850
Minimum Recommended Power, 3-Way (W)			850	1000
Minimum Recommended Power, 4-Way (W)			1000	1200
Thermal Solution		Active Heatsink	Active Heatsink	Active Heatsink
Slot Height		2-Slot	Single Slot	2-Slot
Action	Select	Select	Select	Select