AMD Radeon RX 6600 vs AMD Radeon HD 7950

VS

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 and 3GB VRAM Radeon HD 7950 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6600 's Advantages

Released 9 years and 9 months late

Boost Clock2491MHz

More VRAM (8GB vs 3GB)

Lower TDP (132W vs 200W)

AMD Radeon HD 7950 's Advantages

Larger VRAM bandwidth (240.0GB/s vs 224.0GB/s)

Score

Benchmark

FP32 (float)

Radeon RX 6600 +211%

8.928 TFLOPS

Radeon HD 7950

2.867 TFLOPS

3DMark Time Spy

Radeon RX 6600 +321%

8083

Radeon HD 7950

1917

Radeon RX 6600

VS

Radeon HD 7950

Graphics Card

Oct 2021

Release Date

Jan 2012

Navi II

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1626 MHz

Base Clock

-

2491 MHz

Boost Clock

-

1750 MHz

Memory Clock

1250 MHz

Memory

8GB

Memory Size

3GB

GDDR6

Memory Type

GDDR5

128bit

Memory Bus

384bit

224.0GB/s

Bandwidth

240.0GB/s

Render Config

-

SM Count

-

28

Compute Units

28

1792

Shading Units

1792

112

TMUs

112

64

ROPs

32

-

Tensor Cores

-

28

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

768 KB

Theoretical Performance

159.4 GPixel/s

Pixel Rate

25.60 GPixel/s

279.0 GTexel/s

Texture Rate

89.60 GTexel/s

17.86 TFLOPS

FP16 (half)

-

8.928 TFLOPS

FP32 (float)

2.867 TFLOPS

558.0 GFLOPS

FP64 (double)

716.8 GFLOPS

Graphics Processor

Navi 23

GPU Name

Tahiti

Navi 23 XL (215-130000016)

GPU Variant

Tahiti PRO (215-0821056)

RDNA 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

11.06 billion

Transistors

4.313 billion

237 mm²

Die Size

352 mm²

Board Design

132W

TDP

200W

300 W

Suggested PSU

550 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

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

1x 8-pin

Power Connectors

2x 6-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

1.3

Vulkan

1.2

-

CUDA

-

6.5

Shader Model

5.1

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