AMD Radeon RX 7700 XT vs AMD Radeon HD 6870

VS

AMD Radeon RX 7700 XT

AMD Radeon HD 6870

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

Main Differences

AMD Radeon RX 7700 XT 's Advantages

Released 12 years and 10 months late

Boost Clock2544MHz

More VRAM (12GB vs 1024GB)

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

2336 additional rendering cores

AMD Radeon HD 6870 's Advantages

Lower TDP (151W vs 245W)

Score

Benchmark

FP32 (float)

Radeon RX 7700 XT +1644%

35.17 TFLOPS

Radeon HD 6870

2.016 TFLOPS

Radeon RX 7700 XT

VS

Radeon HD 6870

Graphics Card

Aug 2023

Release Date

Oct 2010

Navi III

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1435 MHz

Base Clock

-

2544 MHz

Boost Clock

-

2250 MHz

Memory Clock

1050 MHz

Memory

12GB

Memory Size

1024MB

GDDR6

Memory Type

GDDR5

192bit

Memory Bus

256bit

432.0GB/s

Bandwidth

134.4GB/s

Render Config

54

Compute Units

14

-

3456

Shading Units

1120

216

TMUs

56

96

ROPs

32

-

54

RT Cores

-

128 KB per Array

L1 Cache

8 KB (per CU)

2 MB

L2 Cache

512 KB

48 MB

L3 Cache

-

Theoretical Performance

244.2 GPixel/s

Pixel Rate

28.80 GPixel/s

549.5 GTexel/s

Texture Rate

50.40 GTexel/s

70.34 TFLOPS

FP16 (half)

-

35.17 TFLOPS

FP32 (float)

2.016 TFLOPS

1099 GFLOPS

FP64 (double)

-

Board Design

245W

TDP

151W

550 W

Suggested PSU

450 W

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

Outputs

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

2x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

Navi 32

GPU Name

Barts

Navi 32 XL (215-180000076)

GPU Variant

Barts XT (215-0798000)

RDNA 3.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

5 nm

Process Size

40 nm

28.1 billion

Transistors

1.7 billion

346 mm²

Die Size

255 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.2

OpenCL

1.2

1.3

Vulkan

N/A

-

6.7

Shader Model

5.0

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