AMD Radeon HD 7870 XT vs NVIDIA GeForce RTX 3080 Ti 20 GB

VS

AMD Radeon HD 7870 XT

NVIDIA GeForce RTX 3080 Ti 20 GB

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 XT and 20GB VRAM GeForce RTX 3080 Ti 20 GB to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7870 XT 's Advantages

Lower TDP (185W vs 350W)

NVIDIA GeForce RTX 3080 Ti 20 GB 's Advantages

Released 9 years and 2 months late

Boost Clock has increased by 71% (1665MHz vs 975MHz)

More VRAM (20GB vs 2GB)

Larger VRAM bandwidth (760.3GB/s vs 192.0GB/s)

8704 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7870 XT

2.995 TFLOPS

GeForce RTX 3080 Ti 20 GB +1038%

34.1 TFLOPS

Radeon HD 7870 XT

VS

GeForce RTX 3080 Ti 20 GB

Graphics Card

Nov 2012

Release Date

Jan 2022

Southern Islands

Generation

GeForce 30

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

925 MHz

Base Clock

1335 MHz

975 MHz

Boost Clock

1665 MHz

1500 MHz

Memory Clock

1188 MHz

Memory

2GB

Memory Size

20GB

GDDR5

Memory Type

GDDR6X

256bit

Memory Bus

320bit

192.0GB/s

Bandwidth

760.3GB/s

Render Config

24

Compute Units

-

SM Count

80

1536

Shading Units

10240

96

TMUs

320

32

ROPs

112

-

Tensor Cores

320

-

RT Cores

80

16 KB (per CU)

L1 Cache

128 KB (per SM)

512 KB

L2 Cache

6 MB

-

Theoretical Performance

31.20 GPixel/s

Pixel Rate

186.5 GPixel/s

93.60 GTexel/s

Texture Rate

532.8 GTexel/s

-

FP16 (half)

34.10 TFLOPS

2.995 TFLOPS

FP32 (float)

34.10 TFLOPS

748.8 GFLOPS

FP64 (double)

532.8 GFLOPS

Board Design

185W

TDP

350W

450 W

Suggested PSU

750 W

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

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

2x 6-pin

Power Connectors

1x 12-pin

Graphics Processor

Tahiti

GPU Name

GA102

Tahiti LE (215-0821122)

GPU Variant

GA102-225-A1

GCN 1.0

Architecture

Ampere

TSMC

Foundry

Samsung

28 nm

Process Size

8 nm

4.313 billion

Transistors

28.3 billion

352 mm²

Die Size

628 mm²

Graphics Features

12 (11_1)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

1.2

OpenCL

3.0

1.2

Vulkan

1.3

-

CUDA

8.6

5.1

Shader Model

6.6

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