AMD Radeon HD 6970 X2 vs ATI Radeon HD 2900 XT

VS

AMD Radeon HD 6970 X2

ATI Radeon HD 2900 XT

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6970 X2 and 512MB VRAM Radeon HD 2900 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6970 X2 's Advantages

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (176.0GB/s vs 106.0GB/s)

1216 additional rendering cores

ATI Radeon HD 2900 XT 's Advantages

Lower TDP (215W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 6970 X2 +467%

2.703 TFLOPS

Radeon HD 2900 XT

0.476 TFLOPS

Radeon HD 6970 X2

VS

Radeon HD 2900 XT

Graphics Card

Unknown

Release Date

May 2007

Northern Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

828 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

512bit

176.0GB/s

Bandwidth

106.0GB/s

Render Config

24

Compute Units

4

-

1536

Shading Units

320

96

TMUs

16

32

ROPs

16

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

256 KB

-

Theoretical Performance

28.16 GPixel/s

Pixel Rate

11.89 GPixel/s

84.48 GTexel/s

Texture Rate

11.89 GTexel/s

-

2.703 TFLOPS

FP32 (float)

475.5 GFLOPS

-

Board Design

375W

TDP

215W

750 W

Suggested PSU

550 W

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

Outputs

2x DVI 1x S-Video

3x 8-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Antilles

GPU Name

R600

Antilles XT (215-0807027)

GPU Variant

R600 XT (215RGMDKA13FG)

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

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

-

5.0

Shader Model

4.0

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