AMD Radeon HD 6870 X2 vs AMD Radeon RX 6600 LE

VS

AMD Radeon HD 6870 X2

AMD Radeon RX 6600 LE

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 X2 and 8GB VRAM Radeon RX 6600 LE to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6600 LE 's Advantages

Released 12 years and 5 months late

Boost Clock2495MHz

More VRAM (8GB vs 1024GB)

Larger VRAM bandwidth (224.0GB/s vs 134.4GB/s)

672 additional rendering cores

Lower TDP (132W vs 300W)

Score

Benchmark

FP32 (float)

Radeon HD 6870 X2

2.016 TFLOPS

Radeon RX 6600 LE +343%

8.942 TFLOPS

Radeon HD 6870 X2

VS

Radeon RX 6600 LE

Graphics Card

Jul 2011

Release Date

Dec 2023

Northern Islands

Generation

Navi II

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 4.0 x8

Clock Speeds

-

Base Clock

1626 MHz

-

Boost Clock

2495 MHz

1050 MHz

Memory Clock

1750 MHz

Memory

1024MB

Memory Size

8GB

GDDR5

Memory Type

GDDR6

256bit

Memory Bus

128bit

134.4GB/s

Bandwidth

224.0GB/s

Render Config

14

Compute Units

28

-

1120

Shading Units

1792

56

TMUs

112

32

ROPs

64

-

RT Cores

28

8 KB (per CU)

L1 Cache

128 KB per Array

512 KB

L2 Cache

2 MB

-

L3 Cache

32 MB

Theoretical Performance

28.80 GPixel/s

Pixel Rate

159.7 GPixel/s

50.40 GTexel/s

Texture Rate

279.4 GTexel/s

-

FP16 (half)

17.88 TFLOPS

2.016 TFLOPS

FP32 (float)

8.942 TFLOPS

-

FP64 (double)

558.9 GFLOPS

Board Design

300W

TDP

132W

700 W

Suggested PSU

300 W

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

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

-

Power Connectors

1x 8-pin

Graphics Processor

Barts

GPU Name

Navi 23

Barts XT (215-0798000)

GPU Variant

Navi 23 XL (215-130000016)

TeraScale 2

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

7 nm

1.7 billion

Transistors

11.06 billion

255 mm²

Die Size

237 mm²

Graphics Features

11.2 (11_0)

DirectX

12 Ultimate (12_2)

4.4

OpenGL

4.6

1.2

OpenCL

2.1

N/A

Vulkan

1.3

-

5.0

Shader Model

6.7

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