AMD Radeon R9 255 OEM vs AMD Radeon HD 7950 Monica BIOS 1

VS

AMD Radeon R9 255 OEM

AMD Radeon HD 7950 Monica BIOS 1

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 255 OEM and 3GB VRAM Radeon HD 7950 Monica BIOS 1 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 255 OEM 's Advantages

Released 1 years and 11 months late

Boost Clock930MHz

Lower TDP (65W vs 185W)

AMD Radeon HD 7950 Monica BIOS 1 's Advantages

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (240.0GB/s vs 73.60GB/s)

1024 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 255 OEM

0.952 TFLOPS

Radeon HD 7950 Monica BIOS 1 +198%

2.842 TFLOPS

Radeon R9 255 OEM

VS

Radeon HD 7950 Monica BIOS 1

Graphics Card

Dec 2013

Release Date

Jan 2012

Volcanic Islands

Generation

Southern 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

3GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

384bit

73.60GB/s

Bandwidth

240.0GB/s

Render Config

8

Compute Units

24

-

512

Shading Units

1536

32

TMUs

96

16

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

768 KB

-

Theoretical Performance

14.88 GPixel/s

Pixel Rate

29.60 GPixel/s

29.76 GTexel/s

Texture Rate

88.80 GTexel/s

-

952.3 GFLOPS

FP32 (float)

2.842 TFLOPS

59.52 GFLOPS

FP64 (double)

710.4 GFLOPS

Board Design

65W

TDP

185W

250 W

Suggested PSU

450 W

No outputs

Outputs

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

1x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Cape Verde

GPU Name

Tahiti

Cape Verde PRX

GPU Variant

Tahiti PRO (215-0821056)

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.5 billion

Transistors

4.313 billion

123 mm²

Die Size

352 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.2

OpenCL

1.2

Vulkan

1.2

-

5.1

Shader Model

5.1

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