NVIDIA A40 PCIe vs ATI Radeon HD 3870 X2

VS

NVIDIA A40 PCIe

ATI Radeon HD 3870 X2

We compared two Desktop platform GPUs: 48GB VRAM A40 PCIe and 512MB VRAM Radeon HD 3870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA A40 PCIe 's Advantages

Released 12 years and 9 months late

Boost Clock1740MHz

More VRAM (48GB vs 512GB)

Larger VRAM bandwidth (695.8GB/s vs 57.66GB/s)

10432 additional rendering cores

ATI Radeon HD 3870 X2 's Advantages

Lower TDP (165W vs 300W)

Score

Benchmark

FP32 (float)

A40 PCIe +6987%

37.42 TFLOPS

Radeon HD 3870 X2

0.528 TFLOPS

A40 PCIe

VS

Radeon HD 3870 X2

Graphics Card

Oct 2020

Release Date

Jan 2008

Tesla

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1305 MHz

Base Clock

-

1740 MHz

Boost Clock

-

1812 MHz

Memory Clock

901 MHz

Memory

48GB

Memory Size

512MB

GDDR6

Memory Type

GDDR3

384bit

Memory Bus

256bit

695.8GB/s

Bandwidth

57.66GB/s

Render Config

-

Compute Units

4

84

SM Count

-

10752

Shading Units

320

336

TMUs

16

112

ROPs

16

336

Tensor Cores

-

84

RT Cores

-

128 KB (per SM)

L1 Cache

-

6 MB

L2 Cache

256 KB

-

Theoretical Performance

194.9 GPixel/s

Pixel Rate

13.20 GPixel/s

584.6 GTexel/s

Texture Rate

13.20 GTexel/s

37.42 TFLOPS

FP16 (half)

-

37.42 TFLOPS

FP32 (float)

528.0 GFLOPS

584.6 GFLOPS

FP64 (double)

105.6 GFLOPS

Board Design

300W

TDP

165W

700 W

Suggested PSU

450 W

3x DisplayPort 1.4a

Outputs

2x DVI 1x S-Video

8-pin EPS

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

GA102

GPU Name

R680

-

GPU Variant

R680 XT (215-0708017)

Ampere

Architecture

TeraScale

Samsung

Foundry

TSMC

8 nm

Process Size

55 nm

28.3 billion

Transistors

0.666 billion

628 mm²

Die Size

192 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3 (full) 4.0 (partial)

3.0

OpenCL

N/A

1.3

Vulkan

N/A

8.6

CUDA

-

6.6

Shader Model

4.1

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