AMD Radeon RX 6600 XT vs ATI Radeon HD 4770

VS

AMD Radeon RX 6600 XT

ATI Radeon HD 4770

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 XT and 512MB VRAM Radeon HD 4770 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 12 years and 3 months late

Boost Clock2589MHz

More VRAM (8GB vs 512GB)

Larger VRAM bandwidth (256.0GB/s vs 51.20GB/s)

1408 additional rendering cores

ATI Radeon HD 4770 's Advantages

Lower TDP (80W vs 160W)

Score

Benchmark

FP32 (float)

Radeon RX 6600 XT +1004%

10.6 TFLOPS

Radeon HD 4770

0.96 TFLOPS

Radeon RX 6600 XT

VS

Radeon HD 4770

Graphics Card

Jul 2021

Release Date

Apr 2009

Navi II

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

1968 MHz

Base Clock

-

2589 MHz

Boost Clock

-

2000 MHz

Memory Clock

800 MHz

Memory

8GB

Memory Size

512MB

GDDR6

Memory Type

GDDR5

128bit

Memory Bus

128bit

256.0GB/s

Bandwidth

51.20GB/s

Render Config

32

Compute Units

8

-

2048

Shading Units

640

128

TMUs

32

64

ROPs

16

-

32

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

128 KB

32 MB

L3 Cache

-

Theoretical Performance

165.7 GPixel/s

Pixel Rate

12.00 GPixel/s

331.4 GTexel/s

Texture Rate

24.00 GTexel/s

21.21 TFLOPS

FP16 (half)

-

10.60 TFLOPS

FP32 (float)

960.0 GFLOPS

662.8 GFLOPS

FP64 (double)

192.0 GFLOPS

Board Design

160W

TDP

80W

450 W

Suggested PSU

250 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

2x DVI 1x S-Video

1x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Navi 23

GPU Name

RV740

Navi 23 XT (215-130000006)

GPU Variant

RV740 XT (215-0727019)

RDNA 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

7 nm

Process Size

40 nm

11.06 billion

Transistors

0.826 billion

237 mm²

Die Size

137 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

2.1

OpenCL

1.1

1.3

Vulkan

N/A

-

6.7

Shader Model

4.1

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