AMD Radeon HD 7950 Mac Edition vs AMD Radeon RX 6600 XT

VS

AMD Radeon HD 7950 Mac Edition

AMD Radeon RX 6600 XT

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7950 Mac Edition and 8GB VRAM Radeon RX 6600 XT 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 8 years and 4 months late

Boost Clock2589MHz

More VRAM (8GB vs 3GB)

Larger VRAM bandwidth (256.0GB/s vs 240.0GB/s)

256 additional rendering cores

Lower TDP (160W vs 200W)

Score

Benchmark

FP32 (float)

Radeon HD 7950 Mac Edition

2.867 TFLOPS

Radeon RX 6600 XT +269%

10.6 TFLOPS

Radeon HD 7950 Mac Edition

VS

Radeon RX 6600 XT

Graphics Card

Mar 2013

Release Date

Jul 2021

Southern Islands

Generation

Navi II

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x8

Clock Speeds

-

Base Clock

1968 MHz

-

Boost Clock

2589 MHz

1250 MHz

Memory Clock

2000 MHz

Memory

3GB

Memory Size

8GB

GDDR5

Memory Type

GDDR6

384bit

Memory Bus

128bit

240.0GB/s

Bandwidth

256.0GB/s

Render Config

28

Compute Units

32

-

1792

Shading Units

2048

112

TMUs

128

32

ROPs

64

-

RT Cores

32

16 KB (per CU)

L1 Cache

128 KB per Array

768 KB

L2 Cache

2 MB

-

L3 Cache

32 MB

Theoretical Performance

25.60 GPixel/s

Pixel Rate

165.7 GPixel/s

89.60 GTexel/s

Texture Rate

331.4 GTexel/s

-

FP16 (half)

21.21 TFLOPS

2.867 TFLOPS

FP32 (float)

10.60 TFLOPS

716.8 GFLOPS

FP64 (double)

662.8 GFLOPS

Board Design

200W

TDP

160W

550 W

Suggested PSU

450 W

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

2x 6-pin

Power Connectors

1x 8-pin

Graphics Processor

Tahiti

GPU Name

Navi 23

Tahiti PRO (215-0821056)

GPU Variant

Navi 23 XT (215-130000006)

GCN 1.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

7 nm

4.313 billion

Transistors

11.06 billion

352 mm²

Die Size

237 mm²

Graphics Features

12 (11_1)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

1.2

OpenCL

2.1

1.2

Vulkan

1.3

-

5.1

Shader Model

6.7

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