AMD Radeon HD 6990M Rebrand vs AMD Radeon RX 7900M

VS

AMD Radeon HD 6990M Rebrand

AMD Radeon RX 7900M

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6990M Rebrand and 16GB VRAM Radeon RX 7900M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6990M Rebrand 's Advantages

Lower TDP (100W vs 180W)

AMD Radeon RX 7900M 's Advantages

Released 12 years and 3 months late

Boost Clock2090MHz

More VRAM (16GB vs 1024GB)

Larger VRAM bandwidth (576.0GB/s vs 70.40GB/s)

3808 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6990M Rebrand

1.28 TFLOPS

Radeon RX 7900M +2909%

38.52 TFLOPS

Radeon HD 6990M Rebrand

VS

Radeon RX 7900M

Graphics Card

Jul 2011

Release Date

Oct 2023

Vancouver

Generation

Navi Mobile

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1825 MHz

-

Boost Clock

2090 MHz

1100 MHz

Memory Clock

2250 MHz

Memory

1024MB

Memory Size

16GB

GDDR5

Memory Type

GDDR6

128bit

Memory Bus

256bit

70.40GB/s

Bandwidth

576.0GB/s

Render Config

14

Compute Units

72

-

800

Shading Units

4608

40

TMUs

288

16

ROPs

192

-

RT Cores

72

8 KB (per CU)

L1 Cache

256 KB per Array

256 KB

L2 Cache

6 MB

-

L3 Cache

64 MB

Theoretical Performance

12.80 GPixel/s

Pixel Rate

401.3 GPixel/s

32.00 GTexel/s

Texture Rate

601.9 GTexel/s

-

FP16 (half)

77.05 TFLOPS

1280 GFLOPS

FP32 (float)

38.52 TFLOPS

-

FP64 (double)

1204 GFLOPS

Board Design

100W

TDP

180W

-

No outputs

Outputs

Portable Device Dependent

-

Power Connectors

None

Graphics Processor

Broadway

GPU Name

Navi 31

Broadway XTX

GPU Variant

Navi 31

TeraScale 2

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

40 nm

Process Size

5 nm

1.04 billion

Transistors

57.7 billion

166 mm²

Die Size

529 mm²

Graphics Features

11.2 (11_0)

DirectX

12 Ultimate (12_2)

4.4

OpenGL

4.6

1.2

OpenCL

2.2

N/A

Vulkan

1.3

-

5.0

Shader Model

6.7

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