AMD Radeon R9 255 OEM vs ATI Radeon HD 3870 AGP

VS

AMD Radeon R9 255 OEM

ATI Radeon HD 3870 AGP

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 255 OEM and 512MB VRAM Radeon HD 3870 AGP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 255 OEM 's Advantages

Boost Clock930MHz

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (73.60GB/s vs 72.06GB/s)

192 additional rendering cores

Lower TDP (65W vs 106W)

Score

Benchmark

FP32 (float)

Radeon R9 255 OEM +91%

0.952 TFLOPS

Radeon HD 3870 AGP

0.497 TFLOPS

Radeon R9 255 OEM

VS

Radeon HD 3870 AGP

Graphics Card

Dec 2013

Release Date

Unknown

Volcanic Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

AGP 8x

Clock Speeds

900 MHz

Base Clock

-

930 MHz

Boost Clock

-

1150 MHz

Memory Clock

1126 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR4

128bit

Memory Bus

256bit

73.60GB/s

Bandwidth

72.06GB/s

Render Config

8

Compute Units

4

-

512

Shading Units

320

32

TMUs

16

ROPs

16

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

256 KB

-

Theoretical Performance

14.88 GPixel/s

Pixel Rate

12.43 GPixel/s

29.76 GTexel/s

Texture Rate

12.43 GTexel/s

-

952.3 GFLOPS

FP32 (float)

497.3 GFLOPS

59.52 GFLOPS

FP64 (double)

99.46 GFLOPS

Board Design

65W

TDP

106W

250 W

Suggested PSU

300 W

No outputs

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

1x 8-pin

Graphics Processor

Cape Verde

GPU Name

RV670

Cape Verde PRX

GPU Variant

RV670 XT (215-0708005)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

1.5 billion

Transistors

0.666 billion

123 mm²

Die Size

192 mm²

Graphics Features

12 (11_1)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3 (full) 4.0 (partial)

1.2

OpenCL

N/A

1.2

Vulkan

N/A

-

5.1

Shader Model

4.1

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