AMD Radeon HD 6990M vs AMD Radeon RX 6600 XT

GPU · Specs Compare

GPU AMD Radeon HD 6990M AMD · 2011-07

GPU AMD Radeon RX 6600 XT AMD · 2021-07

Graphics Card

Release Date

Jul 2011

Jul 2021

Generation

Vancouver

Navi II

Type

Mobile

Desktop

Bus Interface

MXM-B (3.0)

PCIe 4.0 x8

Clock Speeds

Memory Clock

900 MHz

2000 MHz

Base Clock

—

1968 MHz

Boost Clock

—

2589 MHz

Memory

Memory Size

2GB

8GB

Memory Type

GDDR5

GDDR6

Memory Bus

256bit

128bit

Bandwidth

115.2GB/s

256.0GB/s

Render Config

Compute Units

14

32

Shading Units

1120

2048

TMUs

56

128

ROPs

32

64

L1 Cache

8 KB (per CU)

128 KB per Array

L2 Cache

512 KB

2 MB

RT Cores

—

32

L3 Cache

—

32 MB

Theoretical Performance

Pixel Rate

22.88 GPixel/s

165.7 GPixel/s

Texture Rate

40.04 GTexel/s

331.4 GTexel/s

FP32 (float)

1.602 TFLOPS

10.60 TFLOPS

FP16 (half)

—

21.21 TFLOPS

FP64 (double)

—

662.8 GFLOPS

Graphics Processor

GPU Name

Blackcomb

Navi 23

GPU Variant

Blackcomb XTX(216-0811030)

Navi 23 XT(215-130000006)

Architecture

TeraScale 2

RDNA 2.0

Foundry

TSMC

TSMC

Process Size

40 nm

7 nm

Transistors

1.7 billion

11.06 billion

Die Size

212 mm²

237 mm²

Board Design

TDP

100W

160W

Outputs

No outputs

1x HDMI 2.13x DisplayPort 1.4a

Power Connectors

None

1x 8-pin

Suggested PSU

—

450 W

Graphics Features

DirectX

11.2 (11_0)

12 Ultimate (12_2)

OpenGL

4.4

4.6

OpenCL

1.2

2.1

Vulkan

N/A

1.3

Shader Model

5.0

6.7

Benchmark

3DMark Time Spy

—

9,656

3DMark Time Spy Extreme

—

4,399

3DMark Speed Way

—

1,675

Battlefield 5 1080p

—

144

Shadow of the Tomb Raider 2160p

—

38

Cyberpunk 2077 2160p

—

29

Shadow of the Tomb Raider 1440p

—

72

Cyberpunk 2077 1440p

—

36

Shadow of the Tomb Raider 1080p

—

119

Battlefield 5 2160p

—

58

Blender

—

1,213

Cyberpunk 2077 1080p

—

58

Battlefield 5 1440p

—

111

GTA 5 2160p

—

61

GTA 5 1440p

—

82

GTA 5 1080p

—

149

▲ Specs Compare Data sourced from official specifications and benchmark tests.