AMD Radeon HD 7950 Boost vs AMD Radeon HD 6950

VS

AMD Radeon HD 7950 Boost

AMD Radeon HD 6950

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7950 Boost and 2GB VRAM Radeon HD 6950 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7950 Boost 's Advantages

Released 1 years and 6 months late

Boost Clock925MHz

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (240.0GB/s vs 160.0GB/s)

384 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7950 Boost +47%

3.315 TFLOPS

Radeon HD 6950

2.253 TFLOPS

Radeon HD 7950 Boost

VS

Radeon HD 6950

Graphics Card

Jun 2012

Release Date

Dec 2010

Southern Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

850 MHz

Base Clock

-

925 MHz

Boost Clock

-

1250 MHz

Memory Clock

1250 MHz

Memory

3GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

256bit

240.0GB/s

Bandwidth

160.0GB/s

Render Config

28

Compute Units

22

-

1792

Shading Units

1408

112

TMUs

88

32

ROPs

32

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

768 KB

L2 Cache

512 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

25.60 GPixel/s

103.6 GTexel/s

Texture Rate

70.40 GTexel/s

-

3.315 TFLOPS

FP32 (float)

2.253 TFLOPS

828.8 GFLOPS

FP64 (double)

563.2 GFLOPS

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 2x mini-DisplayPort 1.2

2x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Tahiti

GPU Name

Cayman

Tahiti PRO2 (215-0821282)

GPU Variant

Cayman PRO (215-0807019)

GCN 1.0

Architecture

TeraScale 3

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

4.313 billion

Transistors

2.64 billion

352 mm²

Die Size

389 mm²

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.2

OpenCL

1.2

Vulkan

N/A

-

5.1

Shader Model

5.0

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