AMD Radeon R9 255 OEM vs AMD Radeon R9 290

VS

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 255 OEM and 4GB VRAM Radeon R9 290 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

Lower TDP (65W vs 275W)

AMD Radeon R9 290 's Advantages

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (320.0GB/s vs 73.60GB/s)

2048 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 255 OEM

0.952 TFLOPS

Radeon R9 290 +409%

4.849 TFLOPS

Radeon R9 255 OEM

VS

Radeon R9 290

Graphics Card

Dec 2013

Release Date

Nov 2013

Volcanic Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

900 MHz

Base Clock

-

930 MHz

Boost Clock

-

1150 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

512bit

73.60GB/s

Bandwidth

320.0GB/s

Render Config

-

SM Count

-

8

Compute Units

40

512

Shading Units

2560

32

TMUs

160

16

ROPs

64

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

1024 KB

Theoretical Performance

14.88 GPixel/s

Pixel Rate

60.61 GPixel/s

29.76 GTexel/s

Texture Rate

151.5 GTexel/s

-

FP16 (half)

-

952.3 GFLOPS

FP32 (float)

4.849 TFLOPS

59.52 GFLOPS

FP64 (double)

606.1 GFLOPS

Graphics Processor

Cape Verde

GPU Name

Hawaii

Cape Verde PRX

GPU Variant

Hawaii PRO (215-0852020)

GCN 1.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.5 billion

Transistors

6.2 billion

123 mm²

Die Size

438 mm²

Board Design

65W

TDP

275W

250 W

Suggested PSU

600 W

No outputs

Outputs

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

1x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.0

1.2

Vulkan

1.2

-

CUDA

-

5.1

Shader Model

6.3

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