AMD Radeon RX 6600 XT vs AMD Radeon HD 6770 Green Edition

VS

AMD Radeon RX 6600 XT

AMD Radeon HD 6770 Green Edition

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 XT and 2GB VRAM Radeon HD 6770 Green Edition 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 3 months late

Boost Clock2589MHz

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (256.0GB/s vs 21.34GB/s)

1328 additional rendering cores

AMD Radeon HD 6770 Green Edition 's Advantages

Lower TDP (86W vs 160W)

Score

Benchmark

FP32 (float)

Radeon RX 6600 XT +951%

10.6 TFLOPS

Radeon HD 6770 Green Edition

1.008 TFLOPS

Radeon RX 6600 XT

VS

Radeon HD 6770 Green Edition

Graphics Card

Jul 2021

Release Date

Apr 2013

Navi II

Generation

Northern Islands

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

667 MHz

Memory

8GB

Memory Size

2GB

GDDR6

Memory Type

GDDR3

128bit

Memory Bus

128bit

256.0GB/s

Bandwidth

21.34GB/s

Render Config

32

Compute Units

9

-

2048

Shading Units

720

128

TMUs

36

64

ROPs

16

-

32

RT Cores

-

128 KB per Array

L1 Cache

8 KB (per CU)

2 MB

L2 Cache

256 KB

32 MB

L3 Cache

-

Theoretical Performance

165.7 GPixel/s

Pixel Rate

11.20 GPixel/s

331.4 GTexel/s

Texture Rate

25.20 GTexel/s

21.21 TFLOPS

FP16 (half)

-

10.60 TFLOPS

FP32 (float)

1008 GFLOPS

662.8 GFLOPS

FP64 (double)

-

Board Design

160W

TDP

86W

450 W

Suggested PSU

250 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

1x 8-pin

Power Connectors

-

Graphics Processor

Navi 23

GPU Name

Juniper

Navi 23 XT (215-130000006)

GPU Variant

Juniper LE (215-0754009)

RDNA 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

7 nm

Process Size

40 nm

11.06 billion

Transistors

1.04 billion

237 mm²

Die Size

166 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.1

OpenCL

1.2

1.3

Vulkan

N/A

-

6.7

Shader Model

5.0

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