NVIDIA GeForce RTX 5080 vs AMD Radeon HD 6870

VS

NVIDIA GeForce RTX 5080

AMD Radeon HD 6870

We compared two Desktop platform GPUs: 16GB VRAM GeForce RTX 5080 and 1024MB VRAM Radeon HD 6870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 5080 's Advantages

Released 14 years and 3 months late

Boost Clock2520MHz

More VRAM (16GB vs 1024GB)

Larger VRAM bandwidth (973.8GB/s vs 134.4GB/s)

9632 additional rendering cores

AMD Radeon HD 6870 's Advantages

Lower TDP (151W vs 350W)

Score

Benchmark

FP32 (float)

GeForce RTX 5080 +2587%

54.19 TFLOPS

Radeon HD 6870

2.016 TFLOPS

GeForce RTX 5080

VS

Radeon HD 6870

Graphics Card

Jan 2025

Release Date

Oct 2010

GeForce 50

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 5.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

2235 MHz

Base Clock

-

2520 MHz

Boost Clock

-

2400 MHz

Memory Clock

1050 MHz

Memory

16GB

Memory Size

1024MB

GDDR7

Memory Type

GDDR5

256bit

Memory Bus

256bit

973.8GB/s

Bandwidth

134.4GB/s

Render Config

-

Compute Units

14

84

SM Count

-

10752

Shading Units

1120

336

TMUs

56

128

ROPs

32

336

Tensor Cores

-

84

RT Cores

-

128 KB (per SM)

L1 Cache

8 KB (per CU)

64 MB

L2 Cache

512 KB

-

Theoretical Performance

322.6 GPixel/s

Pixel Rate

28.80 GPixel/s

846.7 GTexel/s

Texture Rate

50.40 GTexel/s

54.19 TFLOPS

FP16 (half)

-

54.19 TFLOPS

FP32 (float)

2.016 TFLOPS

846.7 GFLOPS

FP64 (double)

-

Board Design

350W

TDP

151W

750 W

Suggested PSU

450 W

1x HDMI 2.1 3x DisplayPort 2.1a

Outputs

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

1x 16-pin

Power Connectors

2x 6-pin

Graphics Processor

GB203

GPU Name

Barts

GB203-400-A1

GPU Variant

Barts XT (215-0798000)

Blackwell 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

0

Process Size

40 nm

Unknown

Transistors

1.7 billion

377 mm²

Die Size

255 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

10.1

CUDA

-

6.8

Shader Model

5.0

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