NVIDIA RTX A400 vs ATI Radeon HD 3870 X2

VS

NVIDIA RTX A400

ATI Radeon HD 3870 X2

We compared two Desktop platform GPUs: 4GB VRAM RTX A400 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 RTX A400 's Advantages

Released 16 years and 3 months late

Boost Clock1762MHz

More VRAM (4GB vs 512GB)

Larger VRAM bandwidth (96.00GB/s vs 57.66GB/s)

448 additional rendering cores

Lower TDP (50W vs 165W)

Score

Benchmark

FP32 (float)

RTX A400 +412%

2.706 TFLOPS

Radeon HD 3870 X2

0.528 TFLOPS

RTX A400

VS

Radeon HD 3870 X2

Graphics Card

Apr 2024

Release Date

Jan 2008

Quadro Ampere(Ax000)

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

1417 MHz

Base Clock

-

1762 MHz

Boost Clock

-

1500 MHz

Memory Clock

901 MHz

Memory

4GB

Memory Size

512MB

GDDR6

Memory Type

GDDR3

64bit

Memory Bus

256bit

96.00GB/s

Bandwidth

57.66GB/s

Render Config

-

Compute Units

4

6

SM Count

-

768

Shading Units

320

24

TMUs

16

ROPs

16

24

Tensor Cores

-

6

RT Cores

-

128 KB (per SM)

L1 Cache

-

2 MB

L2 Cache

256 KB

-

Theoretical Performance

28.19 GPixel/s

Pixel Rate

13.20 GPixel/s

42.29 GTexel/s

Texture Rate

13.20 GTexel/s

2.706 TFLOPS

FP16 (half)

-

2.706 TFLOPS

FP32 (float)

528.0 GFLOPS

42.29 GFLOPS

FP64 (double)

105.6 GFLOPS

Board Design

50W

TDP

165W

250 W

Suggested PSU

450 W

4x mini-DisplayPort 1.4a

Outputs

2x DVI 1x S-Video

None

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

GA107

GPU Name

R680

-

GPU Variant

R680 XT (215-0708017)

Ampere

Architecture

TeraScale

Samsung

Foundry

TSMC

8 nm

Process Size

55 nm

8.7 billion

Transistors

0.666 billion

200 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

-

6.8

Shader Model

4.1

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