NVIDIA A40 vs NVIDIA A800 Full Specs

Summary

10,752 Shaders 1.74GHz	6,912 Shaders 1.41GHz
48GB GDDR6347.9GB/s	80GB HBM2e1.94TB/s
Peak·FP32·FP16 37.42 TFLOPS	Peak·FP32·FP16 19.49 TFLOPS
Form Factor PCIe Card	Form Factor PCIe Card
TDP 300W	TDP 250W
Power Connectors 1x 8-Pin EPS	Power Connectors 1x 8-Pin EPS

Highlights

Peak OPS

Peak OPS FP32 FP16 Tensor FP16-16 FP16-16 Tensor Sparse Tensor FP16-32 FP16-32 Tensor Sparse FP64 Tensor FP64 BF16 Tensor BF16 BF16 Tensor Sparse Tensor TF32 Tensor INT8 Tensor INT4 Memory Bandwidth TDP

A401.2 POPSINT4 Tensor Sparse

x1

A8002.5 POPSINT4 Tensor Sparse

x2.08

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Theoretical Performance

Clock Speed1740MHz UC·Base·Boost·OC	Clock Speed1410MHz UC·Base·Boost·OC
Peak OPS 1.2 POPSINT4 Tensor Sparse	Peak OPS 2.5 POPSINT4 Tensor Sparse
Tensor FP16-16 149.7 TFLOPS FP16-16 Tensor Sparse 299.3 TFLOPS Tensor FP16-32 74.83 TFLOPS FP16-32 Tensor Sparse 149.7 TFLOPS	Tensor FP16-16 311.9 TFLOPS FP16-16 Tensor Sparse 623.7 TFLOPS Tensor FP16-32 311.9 TFLOPS FP16-32 Tensor Sparse 623.7 TFLOPS
BF16 37.42 TFLOPS Tensor BF16 74.83 TFLOPS BF16 Tensor Sparse 149.7 TFLOPS	BF16 38.98 TFLOPS Tensor BF16 311.9 TFLOPS BF16 Tensor Sparse 623.7 TFLOPS
Tensor TF32 37.42 TFLOPS	Tensor TF32 155.9 TFLOPS
FP32 37.42 TFLOPS	FP32 19.49 TFLOPS
FP64 584.6 GFLOPS Tensor FP64 -	FP64 9.75 TFLOPS Tensor FP64 19.49 TFLOPS
Tensor INT4 598.7 TOPS	Tensor INT4 1.25 POPS
Tensor INT8 299.3 TOPS	Tensor INT8 623.7 TOPS
Ray 56.43 TOPS	Ray -
Pixel Rate 194.9 GPixel/s	Pixel Rate 225.6 GPixel/s
Texture Rate 584.6 GTexel/s	Texture Rate 609.1 GTexel/s

Core Config

Shaders 10,752 Shaders	Shaders 6,912 Shaders
TMUs 336 TMUs	TMUs 432 TMUs
ROPs 112 ROPs	ROPs 160 ROPs
Tensor Cores 336 T-Cores	Tensor Cores 432 T-Cores
RT Cores 84 RT-Cores	RT Cores -
SMs 84 SMs	SMs 108 SMs

Clocks

Base Clock 1.3GHz	Base Clock 765MHz
Boost Clock 1.74GHz	Boost Clock 1.41GHz

Cache

L2 Cache 6.1MB shared

L2 Cache 41MB shared

Memory

48GB GDDR6	80GB HBM2e
Memory Bus 384-bit	Memory Bus 5120-bit
Memory Speed 7.2GT/s	Memory Speed 3GT/s
Memory Bandwidth 347.9GB/s	Memory Bandwidth 1.94TB/s

Power & Thermals

TDP 300W

TDP 250W

Video Output

Multi-Monitor 3	Multi-Monitor -
HDCP HDCP 2.3	HDCP -

Ports

3x DisplayPort 1.3

-

Encoder

Encoder Model NVENC 7

-

Decoder

Decoder Model NVDEC 5

Decoder Model 5x NVDEC 4

Card

Form Factor PCIe Card	Form Factor PCIe Card
PCIe 2-Slots	PCIe 2-Slots
Height 112 mm (4.41") Width 267 mm (10.51") Depth 40 mm (1.57")	Height 111 mm (4.37") Width 267 mm (10.51") Depth 40 mm (1.57")
Cooling Passive	Cooling Passive
Power Connectors 1x 8-Pin EPS	Power Connectors 1x 8-Pin EPS

Chip

Manufacturer NVIDIA	Manufacturer NVIDIA
Chip Designer NVIDIA	Chip Designer NVIDIA
Architecture Ampere	Architecture Ampere
Family Server	Family Server
Branding	Branding
Codename NV172	Codename NV170
Chip Variant GA102-200-KD-A1	Chip Variant -
Market Segment Server	Market Segment Server
Release Date Oct 5, 2020	Release Date Jun 28, 2021

Fabrication

Foundry Samsung	Foundry TSMC
Fabrication Node 8N	Fabrication Node 7N
Die Size 628mm²	Die Size 826mm²
Transistor Count 28.3 Billion	Transistor Count 54.2 Billion
Transistor Density 45.04 MTr/mm²	Transistor Density 65.62 MTr/mm²

Images

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