NVIDIA A40 PCIe vs ATI Radeon HD 4855

VS

NVIDIA A40 PCIe

ATI Radeon HD 4855

We compared two Desktop platform GPUs: 48GB VRAM A40 PCIe and 512MB VRAM Radeon HD 4855 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA A40 PCIe 's Advantages

Released 10 years and 9 months late

Boost Clock1740MHz

More VRAM (48GB vs 512GB)

Larger VRAM bandwidth (695.8GB/s vs 115.2GB/s)

10112 additional rendering cores

ATI Radeon HD 4855 's Advantages

Lower TDP (110W vs 300W)

Score

Benchmark

FP32 (float)

A40 PCIe +4984%

37.42 TFLOPS

Radeon HD 4855

0.736 TFLOPS

A40 PCIe

VS

Radeon HD 4855

Graphics Card

Oct 2020

Release Date

Jan 2010

Tesla

Generation

Radeon R700

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

900 MHz

Memory

48GB

Memory Size

512MB

GDDR6

Memory Type

GDDR5

384bit

Memory Bus

256bit

695.8GB/s

Bandwidth

115.2GB/s

Render Config

-

Compute Units

8

84

SM Count

-

10752

Shading Units

640

336

TMUs

32

112

ROPs

16

336

Tensor Cores

-

84

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per CU)

6 MB

L2 Cache

256 KB

-

Theoretical Performance

194.9 GPixel/s

Pixel Rate

9.200 GPixel/s

584.6 GTexel/s

Texture Rate

18.40 GTexel/s

37.42 TFLOPS

FP16 (half)

-

37.42 TFLOPS

FP32 (float)

736.0 GFLOPS

584.6 GFLOPS

FP64 (double)

147.2 GFLOPS

Board Design

300W

TDP

110W

700 W

Suggested PSU

300 W

3x DisplayPort 1.4a

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

8-pin EPS

Power Connectors

1x 6-pin

Graphics Processor

GA102

GPU Name

RV770

-

GPU Variant

RV770 PRO (215-0669065)

Ampere

Architecture

TeraScale

Samsung

Foundry

TSMC

8 nm

Process Size

55 nm

28.3 billion

Transistors

0.956 billion

628 mm²

Die Size

256 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

3.0

OpenCL

1.1

1.3

Vulkan

N/A

8.6

CUDA

-

6.6

Shader Model

4.1

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