AMD Radeon RX 6800 XT vs ATI Radeon HD 4650

VS

AMD Radeon RX 6800 XT

ATI Radeon HD 4650

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6800 XT and 256MB VRAM Radeon HD 4650 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6800 XT 's Advantages

Released 12 years and 1 months late

Boost Clock2250MHz

More VRAM (16GB vs 256GB)

Larger VRAM bandwidth (512.0GB/s vs 22.40GB/s)

4288 additional rendering cores

ATI Radeon HD 4650 's Advantages

Lower TDP (48W vs 300W)

Score

Benchmark

FP32 (float)

Radeon RX 6800 XT +5301%

20.74 TFLOPS

Radeon HD 4650

0.384 TFLOPS

Radeon RX 6800 XT

VS

Radeon HD 4650

Graphics Card

Oct 2020

Release Date

Sep 2008

Navi II

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1825 MHz

Base Clock

-

2250 MHz

Boost Clock

-

2000 MHz

Memory Clock

700 MHz

Memory

16GB

Memory Size

256MB

GDDR6

Memory Type

GDDR3

256bit

Memory Bus

128bit

512.0GB/s

Bandwidth

22.40GB/s

Render Config

72

Compute Units

4

-

4608

Shading Units

320

288

TMUs

32

128

ROPs

8

-

72

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

4 MB

L2 Cache

128 KB

128 MB

L3 Cache

-

Theoretical Performance

288.0 GPixel/s

Pixel Rate

4.800 GPixel/s

648.0 GTexel/s

Texture Rate

19.20 GTexel/s

41.47 TFLOPS

FP16 (half)

-

20.74 TFLOPS

FP32 (float)

384.0 GFLOPS

1296 GFLOPS

FP64 (double)

-

Board Design

300W

TDP

48W

700 W

Suggested PSU

200 W

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

Outputs

2x DVI 1x S-Video

2x 8-pin

Power Connectors

-

Graphics Processor

Navi 21

GPU Name

RV730

Navi 21 XT (215-121000177)

GPU Variant

RV730 PRO (215-0719056)

RDNA 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

7 nm

Process Size

55 nm

26.8 billion

Transistors

0.514 billion

520 mm²

Die Size

146 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

2.1

OpenCL

1.1

1.3

Vulkan

N/A

-

6.5

Shader Model

4.1

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