NVIDIA RTX A4000H vs AMD Radeon R9 255 OEM

VS

NVIDIA RTX A4000H

AMD Radeon R9 255 OEM

We compared two Desktop platform GPUs: 16GB VRAM RTX A4000H and 2GB VRAM Radeon R9 255 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA RTX A4000H 's Advantages

Released 7 years and 4 months late

Boost Clock has increased by 68% (1560MHz vs 930MHz)

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (448.0GB/s vs 73.60GB/s)

5632 additional rendering cores

AMD Radeon R9 255 OEM 's Advantages

Lower TDP (65W vs 140W)

Score

Benchmark

FP32 (float)

RTX A4000H +1913%

19.17 TFLOPS

Radeon R9 255 OEM

0.952 TFLOPS

RTX A4000H

VS

Radeon R9 255 OEM

Graphics Card

Apr 2021

Release Date

Dec 2013

Quadro Ampere

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

735 MHz

Base Clock

900 MHz

1560 MHz

Boost Clock

930 MHz

1750 MHz

Memory Clock

1150 MHz

Memory

16GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

128bit

448.0GB/s

Bandwidth

73.60GB/s

Render Config

-

Compute Units

8

48

SM Count

-

6144

Shading Units

512

192

TMUs

32

96

ROPs

16

192

Tensor Cores

-

48

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per CU)

4 MB

L2 Cache

256 KB

-

Theoretical Performance

149.8 GPixel/s

Pixel Rate

14.88 GPixel/s

299.5 GTexel/s

Texture Rate

29.76 GTexel/s

19.17 TFLOPS

FP16 (half)

-

19.17 TFLOPS

FP32 (float)

952.3 GFLOPS

299.5 GFLOPS

FP64 (double)

59.52 GFLOPS

Board Design

140W

TDP

65W

300 W

Suggested PSU

250 W

4x DisplayPort 1.4a

Outputs

No outputs

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

GA104

GPU Name

Cape Verde

GA104-???-A1

GPU Variant

Cape Verde PRX

Ampere

Architecture

GCN 1.0

Samsung

Foundry

TSMC

8 nm

Process Size

28 nm

17.4 billion

Transistors

1.5 billion

392 mm²

Die Size

123 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_1)

4.6

OpenGL

4.6

3.0

OpenCL

1.2

1.3

Vulkan

1.2

8.6

CUDA

-

6.7

Shader Model

5.1

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