AMD Radeon RX 6600 XT vs ATI Radeon HD 2600 XT Mac Edition

VS

AMD Radeon RX 6600 XT

ATI Radeon HD 2600 XT Mac Edition

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 XT and 256MB VRAM Radeon HD 2600 XT Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6600 XT 's Advantages

Released 13 years and 5 months late

Boost Clock2589MHz

More VRAM (8GB vs 256GB)

Larger VRAM bandwidth (256.0GB/s vs 25.60GB/s)

1928 additional rendering cores

ATI Radeon HD 2600 XT Mac Edition 's Advantages

Lower TDP (45W vs 160W)

Score

Benchmark

FP32 (float)

Radeon RX 6600 XT +6209%

10.6 TFLOPS

Radeon HD 2600 XT Mac Edition

0.168 TFLOPS

Radeon RX 6600 XT

VS

Radeon HD 2600 XT Mac Edition

Graphics Card

Jul 2021

Release Date

Feb 2008

Navi II

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 1.0 x16

Clock Speeds

1968 MHz

Base Clock

-

2589 MHz

Boost Clock

-

2000 MHz

Memory Clock

800 MHz

Memory

8GB

Memory Size

256MB

GDDR6

Memory Type

GDDR3

128bit

Memory Bus

128bit

256.0GB/s

Bandwidth

25.60GB/s

Render Config

32

Compute Units

3

-

2048

Shading Units

120

128

TMUs

8

64

ROPs

4

-

32

RT Cores

-

128 KB per Array

L1 Cache

-

2 MB

L2 Cache

64 KB

32 MB

L3 Cache

-

Theoretical Performance

165.7 GPixel/s

Pixel Rate

2.800 GPixel/s

331.4 GTexel/s

Texture Rate

5.600 GTexel/s

21.21 TFLOPS

FP16 (half)

-

10.60 TFLOPS

FP32 (float)

168.0 GFLOPS

662.8 GFLOPS

FP64 (double)

-

Board Design

160W

TDP

45W

450 W

Suggested PSU

200 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

2x DVI

1x 8-pin

Power Connectors

None

Graphics Processor

Navi 23

GPU Name

RV630

Navi 23 XT (215-130000006)

GPU Variant

-

RDNA 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

7 nm

Process Size

65 nm

11.06 billion

Transistors

0.39 billion

237 mm²

Die Size

153 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

10.0 (10_0)

4.6

OpenGL

3.3

2.1

OpenCL

N/A

1.3

Vulkan

N/A

-

6.7

Shader Model

4.0

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