AMD Radeon RX 6600 XT vs ATI Radeon HD 3450 PCI

VS

AMD Radeon RX 6600 XT

ATI Radeon HD 3450 PCI

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 XT and 512MB VRAM Radeon HD 3450 PCI 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 6 months late

Boost Clock2589MHz

More VRAM (8GB vs 512GB)

Larger VRAM bandwidth (256.0GB/s vs 6.400GB/s)

2008 additional rendering cores

ATI Radeon HD 3450 PCI 's Advantages

Lower TDP (25W vs 160W)

Score

Benchmark

FP32 (float)

Radeon RX 6600 XT +21983%

10.6 TFLOPS

Radeon HD 3450 PCI

0.048 TFLOPS

Radeon RX 6600 XT

VS

Radeon HD 3450 PCI

Graphics Card

Jul 2021

Release Date

Jan 2008

Navi II

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCI

Clock Speeds

1968 MHz

Base Clock

-

2589 MHz

Boost Clock

-

2000 MHz

Memory Clock

400 MHz

Memory

8GB

Memory Size

512MB

GDDR6

Memory Type

DDR2

128bit

Memory Bus

64bit

256.0GB/s

Bandwidth

6.400GB/s

Render Config

32

Compute Units

2

-

2048

Shading Units

40

128

TMUs

4

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

2.400 GPixel/s

331.4 GTexel/s

Texture Rate

2.400 GTexel/s

21.21 TFLOPS

FP16 (half)

-

10.60 TFLOPS

FP32 (float)

48.00 GFLOPS

662.8 GFLOPS

FP64 (double)

-

Board Design

160W

TDP

25W

450 W

Suggested PSU

200 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

1x DVI 1x S-Video

1x 8-pin

Power Connectors

None

Graphics Processor

Navi 23

GPU Name

RV620

Navi 23 XT (215-130000006)

GPU Variant

RV620 LE

RDNA 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

7 nm

Process Size

55 nm

11.06 billion

Transistors

0.181 billion

237 mm²

Die Size

67 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

2.1

OpenCL

N/A

1.3

Vulkan

N/A

-

6.7

Shader Model

4.1

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