AMD Radeon R9 285 vs AMD Radeon HD 6450

VS

AMD Radeon R9 285

AMD Radeon HD 6450

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 285 and 512MB VRAM Radeon HD 6450 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 285 's Advantages

Released 3 years and 5 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (176.0GB/s vs 25.60GB/s)

1632 additional rendering cores

AMD Radeon HD 6450 's Advantages

Lower TDP (18W vs 190W)

Score

Benchmark

FP32 (float)

Radeon R9 285 +1545%

3.29 TFLOPS

Radeon HD 6450

0.2 TFLOPS

Radeon R9 285

VS

Radeon HD 6450

Graphics Card

Sep 2014

Release Date

Apr 2011

Volcanic Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

800 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

64bit

176.0GB/s

Bandwidth

25.60GB/s

Render Config

28

Compute Units

2

-

1792

Shading Units

160

112

TMUs

8

32

ROPs

4

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

128 KB

-

Theoretical Performance

29.38 GPixel/s

Pixel Rate

2.500 GPixel/s

102.8 GTexel/s

Texture Rate

5.000 GTexel/s

3.290 TFLOPS

FP16 (half)

-

3.290 TFLOPS

FP32 (float)

200.0 GFLOPS

205.6 GFLOPS

FP64 (double)

-

Board Design

190W

TDP

18W

450 W

Suggested PSU

200 W

2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

2x 6-pin

Power Connectors

None

Graphics Processor

Tonga

GPU Name

Caicos

Tonga PRO (215-0851128)

GPU Variant

Caicos PRO

GCN 3.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

5 billion

Transistors

0.37 billion

366 mm²

Die Size

67 mm²

Graphics Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.1

OpenCL

1.2

1.2.170

Vulkan

N/A

-

6.5

Shader Model

5.0

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