NVIDIA GeForce RTX 3080 Ti 20 GB vs AMD Radeon HD 8870 OEM

VS

NVIDIA GeForce RTX 3080 Ti 20 GB

AMD Radeon HD 8870 OEM

We compared two Desktop platform GPUs: 20GB VRAM GeForce RTX 3080 Ti 20 GB and 2GB VRAM Radeon HD 8870 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 3080 Ti 20 GB 's Advantages

Released 9 years late

Boost Clock1665MHz

More VRAM (20GB vs 2GB)

Larger VRAM bandwidth (760.3GB/s vs 153.6GB/s)

8960 additional rendering cores

AMD Radeon HD 8870 OEM 's Advantages

Lower TDP (175W vs 350W)

Score

Benchmark

FP32 (float)

GeForce RTX 3080 Ti 20 GB +1232%

34.1 TFLOPS

Radeon HD 8870 OEM

2.56 TFLOPS

GeForce RTX 3080 Ti 20 GB

VS

Radeon HD 8870 OEM

Graphics Card

Jan 2022

Release Date

Jan 2013

GeForce 30

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1335 MHz

Base Clock

-

1665 MHz

Boost Clock

-

1188 MHz

Memory Clock

1200 MHz

Memory

20GB

Memory Size

2GB

GDDR6X

Memory Type

GDDR5

320bit

Memory Bus

256bit

760.3GB/s

Bandwidth

153.6GB/s

Render Config

-

Compute Units

20

80

SM Count

-

10240

Shading Units

1280

320

TMUs

80

112

ROPs

32

320

Tensor Cores

-

80

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per CU)

6 MB

L2 Cache

512 KB

-

Theoretical Performance

186.5 GPixel/s

Pixel Rate

32.00 GPixel/s

532.8 GTexel/s

Texture Rate

80.00 GTexel/s

34.10 TFLOPS

FP16 (half)

-

34.10 TFLOPS

FP32 (float)

2.560 TFLOPS

532.8 GFLOPS

FP64 (double)

160.0 GFLOPS

Board Design

350W

TDP

175W

750 W

Suggested PSU

450 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

1x 12-pin

Power Connectors

2x 6-pin

Graphics Processor

GA102

GPU Name

Pitcairn

GA102-225-A1

GPU Variant

Pitcairn XT (215-0828047)

Ampere

Architecture

GCN 1.0

Samsung

Foundry

TSMC

8 nm

Process Size

28 nm

28.3 billion

Transistors

2.8 billion

628 mm²

Die Size

212 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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