AMD Radeon RX 6650M XT vs AMD Radeon HD 6990M Rebrand

VS

AMD Radeon RX 6650M XT AMD Radeon HD 6990M Rebrand

We compared two Mobile platform GPUs: 8GB VRAM Radeon RX 6650M XT and 1024MB VRAM Radeon HD 6990M Rebrand to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6650M XT 's Advantages

Released 10 years and 6 months late

Boost Clock2416MHz

More VRAM (8GB vs 1GB)

Larger VRAM bandwidth (256.0GB/s vs 70.40GB/s)

1248 additional rendering cores

AMD Radeon HD 6990M Rebrand 's Advantages

Lower TDP (100W vs 120W)

Score

Benchmark

FP32 (float)

Radeon RX 6650M XT +673%

9.896 TFLOPS

Radeon HD 6990M Rebrand

1.28 TFLOPS

Radeon RX 6650M XT

VS

Radeon HD 6990M Rebrand

Graphics Card

Jan 2022

Release Date

Jul 2011

Mobility Radeon

Generation

Vancouver

Mobile

Type

Mobile

PCIe 4.0 x8

Bus Interface

MXM-B (3.0)

Clock Speeds

2068 MHz

Base Clock

-

2416 MHz

Boost Clock

-

2000 MHz

Memory Clock

1100 MHz

Memory

8GB

Memory Size

1024MB

GDDR6

Memory Type

GDDR5

128bit

Memory Bus

128bit

256.0GB/s

Bandwidth

70.40GB/s

Render Config

-

SM Count

-

32

Compute Units

14

2048

Shading Units

800

128

TMUs

40

64

ROPs

16

-

Tensor Cores

-

32

RT Cores

-

128 KB per Array

L1 Cache

8 KB (per CU)

2 MB

L2 Cache

256 KB

Theoretical Performance

154.6 GPixel/s

Pixel Rate

12.80 GPixel/s

309.2 GTexel/s

Texture Rate

32.00 GTexel/s

19.79 TFLOPS

FP16 (half)

-

9.896 TFLOPS

FP32 (float)

1280 GFLOPS

618.5 GFLOPS

FP64 (double)

-

Graphics Processor

Navi 23

GPU Name

Broadway

-

GPU Variant

Broadway XTX

RDNA 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

7 nm

Process Size

40 nm

11.06 billion

Transistors

1.04 billion

237 mm²

Die Size

166 mm²

Board Design

120W

TDP

100W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Features

12 Ultimate (12_2)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.1

OpenCL

1.2

1.3

Vulkan

N/A

-

CUDA

-

6.5

Shader Model

5.0

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