AMD Radeon RX 6600 vs AMD Radeon R9 295X2

VS

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 and 4GB VRAM Radeon R9 295X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6600 's Advantages

Released 7 years and 6 months late

Boost Clock2491MHz

More VRAM (8GB vs 4GB)

Lower TDP (132W vs 500W)

AMD Radeon R9 295X2 's Advantages

Larger VRAM bandwidth (320.0GB/s vs 224.0GB/s)

1024 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6600 +55%

8.928 TFLOPS

Radeon R9 295X2

5.733 TFLOPS

Radeon RX 6600

VS

Radeon R9 295X2

Graphics Card

Oct 2021

Release Date

Apr 2014

Navi II

Generation

Volcanic 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

4GB

GDDR6

Memory Type

GDDR5

128bit

Memory Bus

512bit

224.0GB/s

Bandwidth

320.0GB/s

Render Config

-

SM Count

-

28

Compute Units

44

1792

Shading Units

2816

112

TMUs

176

64

ROPs

64

-

Tensor Cores

-

28

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

1024 KB

Theoretical Performance

159.4 GPixel/s

Pixel Rate

65.15 GPixel/s

279.0 GTexel/s

Texture Rate

179.2 GTexel/s

17.86 TFLOPS

FP16 (half)

-

8.928 TFLOPS

FP32 (float)

5.733 TFLOPS

558.0 GFLOPS

FP64 (double)

716.7 GFLOPS

Graphics Processor

Navi 23

GPU Name

Vesuvius

Navi 23 XL (215-130000016)

GPU Variant

Vesuvius XT (215-0852022)

RDNA 2.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

11.06 billion

Transistors

6.2 billion

237 mm²

Die Size

438 mm²

Board Design

132W

TDP

500W

300 W

Suggested PSU

900 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

1x DVI 4x mini-DisplayPort 1.2

1x 8-pin

Power Connectors

2x 8-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1

OpenCL

2.0

1.3

Vulkan

1.2

-

CUDA

-

6.5

Shader Model

6.3

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