NVIDIA GeForce RTX 3080 Mobile 16 GB vs AMD Radeon HD 6990M

VS

NVIDIA GeForce RTX 3080 Mobile 16 GB

AMD Radeon HD 6990M

We compared two Mobile platform GPUs: 16GB VRAM GeForce RTX 3080 Mobile 16 GB and 2GB VRAM Radeon HD 6990M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 3080 Mobile 16 GB 's Advantages

Released 9 years and 6 months late

Boost Clock1545MHz

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (448.0GB/s vs 115.2GB/s)

5024 additional rendering cores

AMD Radeon HD 6990M 's Advantages

Lower TDP (100W vs 115W)

Score

Benchmark

FP32 (float)

GeForce RTX 3080 Mobile 16 GB +1084%

18.98 TFLOPS

Radeon HD 6990M

1.602 TFLOPS

GeForce RTX 3080 Mobile 16 GB

VS

Radeon HD 6990M

Graphics Card

Jan 2021

Release Date

Jul 2011

GeForce 30 Mobile

Generation

Vancouver

Mobile

Type

Mobile

PCIe 4.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

1110 MHz

Base Clock

-

1545 MHz

Boost Clock

-

1750 MHz

Memory Clock

900 MHz

Memory

16GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

256bit

448.0GB/s

Bandwidth

115.2GB/s

Render Config

-

Compute Units

14

48

SM Count

-

6144

Shading Units

1120

192

TMUs

56

96

ROPs

32

192

Tensor Cores

-

48

RT Cores

-

128 KB (per SM)

L1 Cache

8 KB (per CU)

4 MB

L2 Cache

512 KB

-

Theoretical Performance

148.3 GPixel/s

Pixel Rate

22.88 GPixel/s

296.6 GTexel/s

Texture Rate

40.04 GTexel/s

18.98 TFLOPS

FP16 (half)

-

18.98 TFLOPS

FP32 (float)

1.602 TFLOPS

296.6 GFLOPS

FP64 (double)

-

Board Design

115W

TDP

100W

-

Portable Device Dependent

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

GA104

GPU Name

Blackcomb

GA104-775-A1

GPU Variant

Blackcomb XTX (216-0811030)

Ampere

Architecture

TeraScale 2

Samsung

Foundry

TSMC

8 nm

Process Size

40 nm

17.4 billion

Transistors

1.7 billion

392 mm²

Die Size

212 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

3.0

OpenCL

1.2

1.3

Vulkan

N/A

8.6

CUDA

-

6.8

Shader Model

5.0

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