AMD Radeon HD 6990 vs AMD Radeon RX 580G

VS

AMD Radeon HD 6990

AMD Radeon RX 580G

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6990 and 8GB VRAM Radeon RX 580G to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 580G 's Advantages

Released 7 years and 7 months late

Boost Clock1330MHz

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (256.0GB/s vs 160.0GB/s)

768 additional rendering cores

Lower TDP (185W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 6990

2.55 TFLOPS

Radeon RX 580G +140%

6.129 TFLOPS

Radeon HD 6990

VS

Radeon RX 580G

Graphics Card

Mar 2011

Release Date

Oct 2018

Northern Islands

Generation

Polaris

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1257 MHz

-

Boost Clock

1330 MHz

1250 MHz

Memory Clock

2000 MHz

Memory

2GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

160.0GB/s

Bandwidth

256.0GB/s

Render Config

24

Compute Units

36

-

1536

Shading Units

2304

96

TMUs

144

32

ROPs

32

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

2 MB

-

Theoretical Performance

26.56 GPixel/s

Pixel Rate

42.56 GPixel/s

79.68 GTexel/s

Texture Rate

191.5 GTexel/s

-

FP16 (half)

6.129 TFLOPS

2.550 TFLOPS

FP32 (float)

6.129 TFLOPS

637.4 GFLOPS

FP64 (double)

383.0 GFLOPS

Board Design

375W

TDP

185W

750 W

Suggested PSU

450 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

1x HDMI 2.0b 3x DisplayPort 1.4a

2x 8-pin

Power Connectors

1x 8-pin

Graphics Processor

Antilles

GPU Name

Polaris 20

Antilles XT (215-0807027)

GPU Variant

Polaris 20 XTX (215-0910038)

TeraScale 3

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

40 nm

Process Size

14 nm

2.64 billion

Transistors

5.7 billion

389 mm²

Die Size

232 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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