AMD Radeon RX 6800M vs AMD Radeon HD 7770M

VS

AMD Radeon RX 6800M

AMD Radeon HD 7770M

We compared two Mobile platform GPUs: 12GB VRAM Radeon RX 6800M and 1024MB VRAM Radeon HD 7770M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6800M 's Advantages

Released 9 years and 1 months late

Boost Clock2390MHz

More VRAM (12GB vs 1024GB)

Larger VRAM bandwidth (384.0GB/s vs 64.00GB/s)

2048 additional rendering cores

AMD Radeon HD 7770M 's Advantages

Lower TDP (32W vs 145W)

Score

Benchmark

FP32 (float)

Radeon RX 6800M +1671%

12.24 TFLOPS

Radeon HD 7770M

0.691 TFLOPS

Radeon RX 6800M

VS

Radeon HD 7770M

Graphics Card

May 2021

Release Date

Apr 2012

Mobility Radeon

Generation

London

Mobile

Type

Mobile

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

2116 MHz

Base Clock

-

2390 MHz

Boost Clock

-

2000 MHz

Memory Clock

1000 MHz

Memory

12GB

Memory Size

1024MB

GDDR6

Memory Type

GDDR5

192bit

Memory Bus

128bit

384.0GB/s

Bandwidth

64.00GB/s

Render Config

40

Compute Units

8

-

2560

Shading Units

512

160

TMUs

32

64

ROPs

16

-

40

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

3 MB

L2 Cache

256 KB

96 MB

L3 Cache

-

Theoretical Performance

153.0 GPixel/s

Pixel Rate

10.80 GPixel/s

382.4 GTexel/s

Texture Rate

21.60 GTexel/s

24.47 TFLOPS

FP16 (half)

-

12.24 TFLOPS

FP32 (float)

691.2 GFLOPS

764.8 GFLOPS

FP64 (double)

43.20 GFLOPS

Board Design

145W

TDP

32W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Navi 22

GPU Name

Chelsea

Navi 22 XTM

GPU Variant

Chelsea XT

RDNA 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

17.2 billion

Transistors

1.5 billion

335 mm²

Die Size

123 mm²

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

-

6.5

Shader Model

5.1

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