AMD Radeon HD 6990M vs NVIDIA GeForce RTX 4090 Mobile

VS

AMD Radeon HD 6990M

NVIDIA GeForce RTX 4090 Mobile

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 6990M and 16GB VRAM GeForce RTX 4090 Mobile to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 4090 Mobile 's Advantages

Released 11 years and 6 months late

Boost Clock1695MHz

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (576.0GB/s vs 115.2GB/s)

8608 additional rendering cores

Lower TDP (80W vs 100W)

Score

Benchmark

FP32 (float)

Radeon HD 6990M

1.602 TFLOPS

GeForce RTX 4090 Mobile +1958%

32.98 TFLOPS

Radeon HD 6990M

VS

GeForce RTX 4090 Mobile

Graphics Card

Jul 2011

Release Date

Jan 2023

Vancouver

Generation

GeForce 40 Mobile

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1335 MHz

-

Boost Clock

1695 MHz

900 MHz

Memory Clock

2250 MHz

Memory

2GB

Memory Size

16GB

GDDR5

Memory Type

GDDR6

256bit

Memory Bus

256bit

115.2GB/s

Bandwidth

576.0GB/s

Render Config

14

Compute Units

-

SM Count

76

1120

Shading Units

9728

56

TMUs

304

32

ROPs

112

-

Tensor Cores

304

-

RT Cores

76

8 KB (per CU)

L1 Cache

128 KB (per SM)

512 KB

L2 Cache

64 MB

-

Theoretical Performance

22.88 GPixel/s

Pixel Rate

189.8 GPixel/s

40.04 GTexel/s

Texture Rate

515.3 GTexel/s

-

FP16 (half)

32.98 TFLOPS

1.602 TFLOPS

FP32 (float)

32.98 TFLOPS

-

FP64 (double)

515.3 GFLOPS

Board Design

100W

TDP

80-150W

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

None

Graphics Processor

Blackcomb

GPU Name

AD103

Blackcomb XTX (216-0811030)

GPU Variant

GN21-X11

TeraScale 2

Architecture

Ada Lovelace

TSMC

Foundry

TSMC

40 nm

Process Size

5 nm

1.7 billion

Transistors

45.9 billion

212 mm²

Die Size

379 mm²

Graphics Features

11.2 (11_0)

DirectX

12 Ultimate (12_2)

4.4

OpenGL

4.6

1.2

OpenCL

3.0

N/A

Vulkan

1.3

-

CUDA

8.9

5.0

Shader Model

6.8

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