AMD Radeon R9 285 vs ATI Radeon HD 3830

VS

AMD Radeon R9 285

ATI Radeon HD 3830

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 285 and 256MB VRAM Radeon HD 3830 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 285 's Advantages

Released 6 years and 5 months late

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (176.0GB/s vs 26.50GB/s)

1472 additional rendering cores

ATI Radeon HD 3830 's Advantages

Lower TDP (75W vs 190W)

Score

Benchmark

FP32 (float)

Radeon R9 285 +668%

3.29 TFLOPS

Radeon HD 3830

0.428 TFLOPS

Radeon R9 285

VS

Radeon HD 3830

Graphics Card

Sep 2014

Release Date

Apr 2008

Volcanic Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

828 MHz

Memory

2GB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

128bit

176.0GB/s

Bandwidth

26.50GB/s

Render Config

28

Compute Units

4

-

1792

Shading Units

320

112

TMUs

16

32

ROPs

16

-

16 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

128 KB

-

Theoretical Performance

29.38 GPixel/s

Pixel Rate

10.69 GPixel/s

102.8 GTexel/s

Texture Rate

10.69 GTexel/s

3.290 TFLOPS

FP16 (half)

-

3.290 TFLOPS

FP32 (float)

427.5 GFLOPS

205.6 GFLOPS

FP64 (double)

85.50 GFLOPS

Board Design

190W

TDP

75W

450 W

Suggested PSU

250 W

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

Outputs

No outputs

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Tonga

GPU Name

RV670

Tonga PRO (215-0851128)

GPU Variant

RV670 PRO (215-0708003)

GCN 3.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

5 billion

Transistors

0.666 billion

366 mm²

Die Size

192 mm²

Graphics Features

12 (12_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3 (full) 4.0 (partial)

2.1

OpenCL

N/A

1.2.170

Vulkan

N/A

-

6.5

Shader Model

4.1

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