AMD Radeon RX 6400 vs ATI Radeon X1550

VS

AMD Radeon RX 6400

ATI Radeon X1550

We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 6400 and 256MB VRAM Radeon X1550 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6400 's Advantages

Released 15 years late

Boost Clock2321MHz

More VRAM (4GB vs 256GB)

Larger VRAM bandwidth (128.0GB/s vs 12.80GB/s)

768 additional rendering cores

ATI Radeon X1550 's Advantages

Lower TDP (27W vs 53W)

Score

Radeon RX 6400

VS

Radeon X1550

Graphics Card

Jan 2022

Release Date

Jan 2007

Navi II

Generation

Radeon R500 PCIe

Desktop

Type

Desktop

PCIe 4.0 x4

Bus Interface

PCIe 1.0 x16

Clock Speeds

1923 MHz

Base Clock

-

2321 MHz

Boost Clock

-

2000 MHz

Memory Clock

400 MHz

Memory

4GB

Memory Size

256MB

GDDR6

Memory Type

DDR2

64bit

Memory Bus

128bit

128.0GB/s

Bandwidth

12.80GB/s

Render Config

12

Compute Units

-

768

Shading Units

-

48

TMUs

4

32

ROPs

4

-

12

RT Cores

-

128 KB per Array

L1 Cache

-

1024 KB

L2 Cache

-

16 MB

L3 Cache

-

Theoretical Performance

74.27 GPixel/s

Pixel Rate

2.200 GPixel/s

111.4 GTexel/s

Texture Rate

2.200 GTexel/s

7.130 TFLOPS

FP16 (half)

-

3.565 TFLOPS

FP32 (float)

-

222.8 GFLOPS

FP64 (double)

-

Board Design

53W

TDP

27W

250 W

Suggested PSU

200 W

1x HDMI 2.1 1x DisplayPort 1.4a

Outputs

1x DVI 1x VGA 1x S-Video

None

Power Connectors

None

Graphics Processor

Navi 24

GPU Name

RV516

Navi 24 XL (215-135000046)

GPU Variant

-

RDNA 2.0

Architecture

R500

TSMC

Foundry

UMC

6 nm

Process Size

80 nm

5.4 billion

Transistors

0.107 billion

107 mm²

Die Size

100 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

9.0c (9_3)

4.6

OpenGL

2.1

2.2

OpenCL

N/A

1.3

Vulkan

N/A

-

6.7

Shader Model

3.0

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