AMD Radeon RX 560 XT vs AMD Radeon HD 6990

VS

AMD Radeon RX 560 XT

AMD Radeon HD 6990

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

Main Differences

AMD Radeon RX 560 XT 's Advantages

Released 8 years late

Boost Clock1226MHz

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (224.0GB/s vs 160.0GB/s)

256 additional rendering cores

Lower TDP (150W vs 375W)

Score

Benchmark

FP32 (float)

Radeon RX 560 XT +72%

4.394 TFLOPS

Radeon HD 6990

2.55 TFLOPS

Radeon RX 560 XT

VS

Radeon HD 6990

Graphics Card

Mar 2019

Release Date

Mar 2011

Polaris

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1074 MHz

Base Clock

-

1226 MHz

Boost Clock

-

1750 MHz

Memory Clock

1250 MHz

Memory

4GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

224.0GB/s

Bandwidth

160.0GB/s

Render Config

28

Compute Units

24

-

1792

Shading Units

1536

112

TMUs

96

32

ROPs

32

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

2 MB

L2 Cache

512 KB

-

Theoretical Performance

39.23 GPixel/s

Pixel Rate

26.56 GPixel/s

137.3 GTexel/s

Texture Rate

79.68 GTexel/s

4.394 TFLOPS

FP16 (half)

-

4.394 TFLOPS

FP32 (float)

2.550 TFLOPS

274.6 GFLOPS

FP64 (double)

637.4 GFLOPS

Board Design

150W

TDP

375W

450 W

Suggested PSU

750 W

1x HDMI 2.0b 3x DisplayPort 1.4a

Outputs

1x DVI 4x mini-DisplayPort 1.2

1x 6-pin

Power Connectors

2x 8-pin

Graphics Processor

Ellesmere

GPU Name

Antilles

Polaris 10 LE1

GPU Variant

Antilles XT (215-0807027)

GCN 4.0

Architecture

TeraScale 3

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

40 nm

5.7 billion

Transistors

2.64 billion

232 mm²

Die Size

389 mm²

Graphics Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.1

OpenCL

1.2

Vulkan

N/A

-

6.4

Shader Model

5.0

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