AMD Radeon HD 7950 Mac Edition vs ATI Radeon HD 2900 XTX

VS

AMD Radeon HD 7950 Mac Edition

ATI Radeon HD 2900 XTX

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7950 Mac Edition and 512MB VRAM Radeon HD 2900 XTX to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7950 Mac Edition 's Advantages

More VRAM (3GB vs 512GB)

Larger VRAM bandwidth (240.0GB/s vs 106.0GB/s)

1472 additional rendering cores

Lower TDP (200W vs 240W)

Score

Benchmark

FP32 (float)

Radeon HD 7950 Mac Edition +502%

2.867 TFLOPS

Radeon HD 2900 XTX

0.476 TFLOPS

Radeon HD 7950 Mac Edition

VS

Radeon HD 2900 XTX

Graphics Card

Mar 2013

Release Date

Unknown

Southern Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

828 MHz

Memory

3GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

384bit

Memory Bus

512bit

240.0GB/s

Bandwidth

106.0GB/s

Render Config

28

Compute Units

4

-

1792

Shading Units

320

112

TMUs

16

32

ROPs

16

-

16 KB (per CU)

L1 Cache

-

768 KB

L2 Cache

256 KB

-

Theoretical Performance

25.60 GPixel/s

Pixel Rate

11.89 GPixel/s

89.60 GTexel/s

Texture Rate

11.89 GTexel/s

-

2.867 TFLOPS

FP32 (float)

475.5 GFLOPS

716.8 GFLOPS

FP64 (double)

-

Board Design

200W

TDP

240W

550 W

Suggested PSU

550 W

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

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Tahiti

GPU Name

R600

Tahiti PRO (215-0821056)

GPU Variant

R600 XTX A11 (215RGMDKA11FG)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

80 nm

4.313 billion

Transistors

0.72 billion

352 mm²

Die Size

420 mm²

Graphics Features

12 (11_1)

DirectX

10.0 (10_0)

4.6

OpenGL

3.3 (full) 4.0 (partial)

1.2

OpenCL

N/A

1.2

Vulkan

N/A

-

5.1

Shader Model

4.0

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