AMD Radeon HD 6670 vs ATI Radeon HD 2900 XT

VS

AMD Radeon HD 6670

ATI Radeon HD 2900 XT

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6670 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 6670 's Advantages

Released 3 years and 11 months late

More VRAM (1024GB vs 512GB)

160 additional rendering cores

Lower TDP (66W vs 215W)

ATI Radeon HD 2900 XT 's Advantages

Larger VRAM bandwidth (106.0GB/s vs 64.00GB/s)

Score

Benchmark

FP32 (float)

Radeon HD 6670 +61%

0.768 TFLOPS

Radeon HD 2900 XT

0.476 TFLOPS

Radeon HD 6670

VS

Radeon HD 2900 XT

Graphics Card

Apr 2011

Release Date

May 2007

Northern Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

828 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

512bit

64.00GB/s

Bandwidth

106.0GB/s

Render Config

6

Compute Units

4

-

480

Shading Units

320

24

TMUs

16

8

ROPs

16

-

8 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

256 KB

-

Theoretical Performance

6.400 GPixel/s

Pixel Rate

11.89 GPixel/s

19.20 GTexel/s

Texture Rate

11.89 GTexel/s

-

768.0 GFLOPS

FP32 (float)

475.5 GFLOPS

-

Board Design

66W

TDP

215W

250 W

Suggested PSU

550 W

1x DVI 1x HDMI 1.3a 1x VGA

Outputs

2x DVI 1x S-Video

None

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Turks

GPU Name

R600

Turks XT (215-0803000)

GPU Variant

R600 XT (215RGMDKA13FG)

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

80 nm

0.716 billion

Transistors

0.72 billion

118 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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