NVIDIA GeForce RTX 3080 vs AMD Radeon HD 7870 XT

VS

NVIDIA GeForce RTX 3080

AMD Radeon HD 7870 XT

We compared two Desktop platform GPUs: 10GB VRAM GeForce RTX 3080 and 2GB VRAM Radeon HD 7870 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 3080 's Advantages

Released 7 years and 10 months late

Boost Clock has increased by 75% (1710MHz vs 975MHz)

More VRAM (10GB vs 2GB)

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

7168 additional rendering cores

AMD Radeon HD 7870 XT 's Advantages

Lower TDP (185W vs 320W)

Score

Benchmark

FP32 (float)

GeForce RTX 3080 +893%

29.77 TFLOPS

Radeon HD 7870 XT

2.995 TFLOPS

GeForce RTX 3080

VS

Radeon HD 7870 XT

Graphics Card

Sep 2020

Release Date

Nov 2012

GeForce 30

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1440 MHz

Base Clock

925 MHz

1710 MHz

Boost Clock

975 MHz

1188 MHz

Memory Clock

1500 MHz

Memory

10GB

Memory Size

2GB

GDDR6X

Memory Type

GDDR5

320bit

Memory Bus

256bit

760.3GB/s

Bandwidth

192.0GB/s

Render Config

-

Compute Units

24

68

SM Count

-

8704

Shading Units

1536

272

TMUs

96

ROPs

32

272

Tensor Cores

-

68

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per CU)

5 MB

L2 Cache

512 KB

-

Theoretical Performance

164.2 GPixel/s

Pixel Rate

31.20 GPixel/s

465.1 GTexel/s

Texture Rate

93.60 GTexel/s

29.77 TFLOPS

FP16 (half)

-

29.77 TFLOPS

FP32 (float)

2.995 TFLOPS

465.1 GFLOPS

FP64 (double)

748.8 GFLOPS

Board Design

320W

TDP

185W

700 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

Tahiti

GA102-200-KD-A1

GPU Variant

Tahiti LE (215-0821122)

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

352 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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