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

VS

AMD Radeon RX 6650M XT

AMD Radeon HD 6990M

We compared two Mobile platform GPUs: 8GB VRAM Radeon RX 6650M XT and 2GB VRAM Radeon HD 6990M 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 2GB)

Larger VRAM bandwidth (256.0GB/s vs 115.2GB/s)

928 additional rendering cores

AMD Radeon HD 6990M 's Advantages

Lower TDP (100W vs 120W)

Score

Benchmark

FP32 (float)

Radeon RX 6650M XT +517%

9.896 TFLOPS

Radeon HD 6990M

1.602 TFLOPS

Radeon RX 6650M XT

VS

Radeon HD 6990M

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

900 MHz

Memory

8GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

128bit

Memory Bus

256bit

256.0GB/s

Bandwidth

115.2GB/s

Render Config

32

Compute Units

14

-

2048

Shading Units

1120

128

TMUs

56

64

ROPs

32

-

32

RT Cores

-

128 KB per Array

L1 Cache

8 KB (per CU)

2 MB

L2 Cache

512 KB

32 MB

L3 Cache

-

Theoretical Performance

154.6 GPixel/s

Pixel Rate

22.88 GPixel/s

309.2 GTexel/s

Texture Rate

40.04 GTexel/s

19.79 TFLOPS

FP16 (half)

-

9.896 TFLOPS

FP32 (float)

1.602 TFLOPS

618.5 GFLOPS

FP64 (double)

-

Board Design

120W

TDP

100W

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

Navi 23

GPU Name

Blackcomb

-

GPU Variant

Blackcomb XTX (216-0811030)

RDNA 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

7 nm

Process Size

40 nm

11.06 billion

Transistors

1.7 billion

237 mm²

Die Size

212 mm²

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

-

6.5

Shader Model

5.0

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