AMD Radeon HD 6990 vs AMD Radeon RX 560DX

VS

AMD Radeon HD 6990

AMD Radeon RX 560DX

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6990 and 4GB VRAM Radeon RX 560DX to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6990 's Advantages

Larger VRAM bandwidth (160.0GB/s vs 96.00GB/s)

640 additional rendering cores

AMD Radeon RX 560DX 's Advantages

Released 7 years and 1 months late

Boost Clock1175MHz

More VRAM (4GB vs 2GB)

Lower TDP (65W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 6990 +21%

2.55 TFLOPS

Radeon RX 560DX

2.106 TFLOPS

Radeon HD 6990

VS

Radeon RX 560DX

Graphics Card

Mar 2011

Release Date

Apr 2018

Northern Islands

Generation

Polaris

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1090 MHz

-

Boost Clock

1175 MHz

1250 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

160.0GB/s

Bandwidth

96.00GB/s

Render Config

24

Compute Units

14

-

1536

Shading Units

896

96

TMUs

56

32

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

1024 KB

-

Theoretical Performance

26.56 GPixel/s

Pixel Rate

18.80 GPixel/s

79.68 GTexel/s

Texture Rate

65.80 GTexel/s

-

FP16 (half)

2.106 TFLOPS

2.550 TFLOPS

FP32 (float)

2.106 TFLOPS

637.4 GFLOPS

FP64 (double)

131.6 GFLOPS

Board Design

375W

TDP

65W

750 W

Suggested PSU

250 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

1x DVI 1x HDMI 2.0b 1x DisplayPort 1.4a

2x 8-pin

Power Connectors

None

Graphics Processor

Antilles

GPU Name

Polaris 21

Antilles XT (215-0807027)

GPU Variant

Polaris 21 XL

TeraScale 3

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

40 nm

Process Size

14 nm

2.64 billion

Transistors

3 billion

389 mm²

Die Size

123 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (12_0)

4.4

OpenGL

4.6

1.2

OpenCL

2.1

N/A

Vulkan

1.2

-

5.0

Shader Model

6.4

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