NVIDIA GeForce RTX 3080 Ti vs AMD Radeon HD 8990 OEM

VS

NVIDIA GeForce RTX 3080 Ti

AMD Radeon HD 8990 OEM

We compared two Desktop platform GPUs: 12GB VRAM GeForce RTX 3080 Ti and 3GB VRAM Radeon HD 8990 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 3080 Ti 's Advantages

Released 8 years and 1 months late

Boost Clock has increased by 66% (1665MHz vs 1000MHz)

More VRAM (12GB vs 3GB)

Larger VRAM bandwidth (912.4GB/s vs 288.0GB/s)

8192 additional rendering cores

Lower TDP (350W vs 375W)

Score

Benchmark

FP32 (float)

GeForce RTX 3080 Ti +732%

34.1 TFLOPS

Radeon HD 8990 OEM

4.096 TFLOPS

GeForce RTX 3080 Ti

VS

Radeon HD 8990 OEM

Graphics Card

May 2021

Release Date

Apr 2013

GeForce 30

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1365 MHz

Base Clock

950 MHz

1665 MHz

Boost Clock

1000 MHz

1188 MHz

Memory Clock

1500 MHz

Memory

12GB

Memory Size

3GB

GDDR6X

Memory Type

GDDR5

384bit

Memory Bus

384bit

912.4GB/s

Bandwidth

288.0GB/s

Render Config

-

Compute Units

32

80

SM Count

-

10240

Shading Units

2048

320

TMUs

128

112

ROPs

32

320

Tensor Cores

-

80

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per CU)

6 MB

L2 Cache

768 KB

-

Theoretical Performance

186.5 GPixel/s

Pixel Rate

32.00 GPixel/s

532.8 GTexel/s

Texture Rate

128.0 GTexel/s

34.10 TFLOPS

FP16 (half)

-

34.10 TFLOPS

FP32 (float)

4.096 TFLOPS

532.8 GFLOPS

FP64 (double)

1024 GFLOPS

Board Design

350W

TDP

375W

750 W

Suggested PSU

750 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

1x DVI 4x mini-DisplayPort 1.2

1x 12-pin

Power Connectors

2x 8-pin

Graphics Processor

GA102

GPU Name

Malta

GA102-225-A1

GPU Variant

Malta XT (215-0849026)

Ampere

Architecture

GCN 1.0

Samsung

Foundry

TSMC

8 nm

Process Size

28 nm

28.3 billion

Transistors

4.313 billion

628 mm²

Die Size

365 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_1)

4.6

OpenGL

4.6

3.0

OpenCL

1.2

1.3

Vulkan

1.2

8.6

CUDA

-

6.6

Shader Model

5.1

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