AMD Radeon HD 7970 GHz Edition vs ATI Radeon HD 2900 XTX

VS

AMD Radeon HD 7970 GHz Edition

ATI Radeon HD 2900 XTX

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7970 GHz 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 7970 GHz Edition 's Advantages

Boost Clock1050MHz

More VRAM (3GB vs 512GB)

Larger VRAM bandwidth (288.0GB/s vs 106.0GB/s)

1728 additional rendering cores

ATI Radeon HD 2900 XTX 's Advantages

Lower TDP (240W vs 300W)

Score

Benchmark

FP32 (float)

Radeon HD 7970 GHz Edition +803%

4.301 TFLOPS

Radeon HD 2900 XTX

0.476 TFLOPS

Radeon HD 7970 GHz Edition

VS

Radeon HD 2900 XTX

Graphics Card

Jun 2012

Release Date

Unknown

Southern Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

1000 MHz

Base Clock

-

1050 MHz

Boost Clock

-

1500 MHz

Memory Clock

828 MHz

Memory

3GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

384bit

Memory Bus

512bit

288.0GB/s

Bandwidth

106.0GB/s

Render Config

32

Compute Units

4

-

2048

Shading Units

320

128

TMUs

16

32

ROPs

16

-

16 KB (per CU)

L1 Cache

-

768 KB

L2 Cache

256 KB

-

Theoretical Performance

33.60 GPixel/s

Pixel Rate

11.89 GPixel/s

134.4 GTexel/s

Texture Rate

11.89 GTexel/s

-

4.301 TFLOPS

FP32 (float)

475.5 GFLOPS

1075 GFLOPS

FP64 (double)

-

Board Design

300W

TDP

240W

700 W

Suggested PSU

550 W

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

Outputs

2x DVI 1x S-Video

1x 6-pin + 1x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

Tahiti

GPU Name

R600

Tahiti XT2 (215-0821065)

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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