AMD Radeon HD 6870 vs AMD Radeon RX 7700

VS

AMD Radeon HD 6870

AMD Radeon RX 7700

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 and 12GB VRAM Radeon RX 7700 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870 's Advantages

Lower TDP (151W vs 200W)

AMD Radeon RX 7700 's Advantages

Boost Clock2600MHz

More VRAM (12GB vs 1024GB)

Larger VRAM bandwidth (432.0GB/s vs 134.4GB/s)

1952 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6870

2.016 TFLOPS

Radeon RX 7700 +1484%

31.95 TFLOPS

Radeon HD 6870

VS

Radeon RX 7700

Graphics Card

Oct 2010

Release Date

Unknown

Northern Islands

Generation

Navi III

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1900 MHz

-

Boost Clock

2600 MHz

1050 MHz

Memory Clock

2250 MHz

Memory

1024MB

Memory Size

12GB

GDDR5

Memory Type

GDDR6

256bit

Memory Bus

192bit

134.4GB/s

Bandwidth

432.0GB/s

Render Config

14

Compute Units

48

-

1120

Shading Units

3072

56

TMUs

192

32

ROPs

96

-

RT Cores

48

8 KB (per CU)

L1 Cache

128 KB per Array

512 KB

L2 Cache

2 MB

-

L3 Cache

64 MB

Theoretical Performance

28.80 GPixel/s

Pixel Rate

249.6 GPixel/s

50.40 GTexel/s

Texture Rate

499.2 GTexel/s

-

FP16 (half)

63.90 TFLOPS

2.016 TFLOPS

FP32 (float)

31.95 TFLOPS

-

FP64 (double)

998.4 GFLOPS

Board Design

151W

TDP

200W

450 W

Suggested PSU

550 W

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

Outputs

1x HDMI 2.1a 2x DisplayPort 2.1 1x USB Type-C

2x 6-pin

Power Connectors

1x 8-pin

Graphics Processor

Barts

GPU Name

Navi 32

Barts XT (215-0798000)

GPU Variant

Navi 32

TeraScale 2

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

40 nm

Process Size

5 nm

1.7 billion

Transistors

28.1 billion

255 mm²

Die Size

346 mm²

Graphics Features

11.2 (11_0)

DirectX

12 Ultimate (12_2)

4.4

OpenGL

4.6

1.2

OpenCL

2.2

N/A

Vulkan

1.3

-

5.0

Shader Model

6.7

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