AMD Radeon HD 6970 vs ATI Radeon HD 2900 GT

VS

AMD Radeon HD 6970 ATI Radeon HD 2900 GT

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6970 and 256MB VRAM Radeon HD 2900 GT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6970 's Advantages

Released 3 years and 1 months late

Larger VRAM bandwidth (176.0GB/s vs 51.20GB/s)

1296 additional rendering cores

ATI Radeon HD 2900 GT 's Advantages

Lower TDP (150W vs 250W)

Score

Benchmark

FP32 (float)

Radeon HD 6970 +838%

2.703 TFLOPS

Radeon HD 2900 GT

0.288 TFLOPS

Radeon HD 6970

VS

Radeon HD 2900 GT

Graphics Card

Dec 2010

Release Date

Nov 2007

Northern Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1375 MHz

Memory Clock

800 MHz

Memory

2GB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

256bit

176.0GB/s

Bandwidth

51.20GB/s

Render Config

-

SM Count

-

24

Compute Units

3

1536

Shading Units

240

96

TMUs

12

32

ROPs

12

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

128 KB

Theoretical Performance

28.16 GPixel/s

Pixel Rate

7.212 GPixel/s

84.48 GTexel/s

Texture Rate

7.212 GTexel/s

-

FP16 (half)

-

2.703 TFLOPS

FP32 (float)

288.5 GFLOPS

675.8 GFLOPS

FP64 (double)

-

Graphics Processor

Cayman

GPU Name

R600

Cayman XT (215-0807007)

GPU Variant

R600 GT (215RGFDKA13FG)

TeraScale 3

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

80 nm

2.64 billion

Transistors

0.72 billion

389 mm²

Die Size

420 mm²

Board Design

250W

TDP

150W

600 W

Suggested PSU

450 W

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

Outputs

2x DVI 1x S-Video

1x 6-pin + 1x 8-pin

Power Connectors

1x 8-pin

Graphics Features

11.2 (11_0)

DirectX

10.0 (10_0)

4.4

OpenGL

3.3 (full) 4.0 (partial)

1.2

OpenCL

N/A

Vulkan

N/A

-

CUDA

-

5.0

Shader Model

4.0

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