AMD Radeon HD 6390 vs AMD Radeon RX 6800 XT

VS

AMD Radeon HD 6390

AMD Radeon RX 6800 XT

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6390 and 16GB VRAM Radeon RX 6800 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6390 's Advantages

Lower TDP (39W vs 300W)

AMD Radeon RX 6800 XT 's Advantages

Released 9 years and 3 months late

Boost Clock2250MHz

More VRAM (16GB vs 1024GB)

Larger VRAM bandwidth (512.0GB/s vs 16.00GB/s)

4288 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6390

0.352 TFLOPS

Radeon RX 6800 XT +5792%

20.74 TFLOPS

Radeon HD 6390

VS

Radeon RX 6800 XT

Graphics Card

Jul 2011

Release Date

Oct 2020

Northern Islands

Generation

Navi II

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1825 MHz

-

Boost Clock

2250 MHz

500 MHz

Memory Clock

2000 MHz

Memory

1024MB

Memory Size

16GB

DDR2

Memory Type

GDDR6

128bit

Memory Bus

256bit

16.00GB/s

Bandwidth

512.0GB/s

Render Config

4

Compute Units

72

-

320

Shading Units

4608

16

TMUs

288

8

ROPs

128

-

RT Cores

72

8 KB (per CU)

L1 Cache

128 KB per Array

256 KB

L2 Cache

4 MB

-

L3 Cache

128 MB

Theoretical Performance

4.400 GPixel/s

Pixel Rate

288.0 GPixel/s

8.800 GTexel/s

Texture Rate

648.0 GTexel/s

-

FP16 (half)

41.47 TFLOPS

352.0 GFLOPS

FP32 (float)

20.74 TFLOPS

-

FP64 (double)

1296 GFLOPS

Board Design

39W

TDP

300W

200 W

Suggested PSU

700 W

1x DVI 1x HDMI 1.3a 1x VGA

Outputs

1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C

None

Power Connectors

2x 8-pin

Graphics Processor

Redwood

GPU Name

Navi 21

Redwood LE

GPU Variant

Navi 21 XT (215-121000177)

TeraScale 2

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

7 nm

0.627 billion

Transistors

26.8 billion

104 mm²

Die Size

520 mm²

Graphics Features

11.2 (11_0)

DirectX

12 Ultimate (12_2)

4.4

OpenGL

4.6

1.2

OpenCL

2.1

N/A

Vulkan

1.3

-

5.0

Shader Model

6.5

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