AMD Radeon HD 7950 Boost vs AMD Radeon R9 285X

VS

AMD Radeon HD 7950 Boost

AMD Radeon R9 285X

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7950 Boost and 3GB VRAM Radeon R9 285X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7950 Boost 's Advantages

Boost Clock925MHz

AMD Radeon R9 285X 's Advantages

Larger VRAM bandwidth (264.0GB/s vs 240.0GB/s)

256 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7950 Boost

3.315 TFLOPS

Radeon R9 285X +23%

4.104 TFLOPS

Radeon HD 7950 Boost

VS

Radeon R9 285X

Graphics Card

Jun 2012

Release Date

Unknown

Southern Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

850 MHz

Base Clock

-

925 MHz

Boost Clock

-

1250 MHz

Memory Clock

1375 MHz

Memory

3GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

384bit

240.0GB/s

Bandwidth

264.0GB/s

Render Config

28

Compute Units

32

-

1792

Shading Units

2048

112

TMUs

128

32

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

768 KB

L2 Cache

768 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

32.06 GPixel/s

103.6 GTexel/s

Texture Rate

128.3 GTexel/s

-

3.315 TFLOPS

FP32 (float)

4.104 TFLOPS

828.8 GFLOPS

FP64 (double)

-

Board Design

200W

TDP

200W

550 W

Suggested PSU

550 W

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

Outputs

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

2x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Tahiti

GPU Name

Tonga

Tahiti PRO2 (215-0821282)

GPU Variant

Tonga XT (215-0851313)

GCN 1.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

4.313 billion

Transistors

5 billion

352 mm²

Die Size

366 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.0

1.2

Vulkan

1.2

-

5.1

Shader Model

6.3

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