AMD Radeon HD 6670 vs ATI Radeon HD 4890

VS

AMD Radeon HD 6670

ATI Radeon HD 4890

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6670 and 1024MB VRAM Radeon HD 4890 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6670 's Advantages

Released 2 years late

Lower TDP (66W vs 190W)

ATI Radeon HD 4890 's Advantages

Larger VRAM bandwidth (124.8GB/s vs 64.00GB/s)

320 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6670

0.768 TFLOPS

Radeon HD 4890 +77%

1.36 TFLOPS

Radeon HD 6670

VS

Radeon HD 4890

Graphics Card

Apr 2011

Release Date

Apr 2009

Northern Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

975 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

64.00GB/s

Bandwidth

124.8GB/s

Render Config

6

Compute Units

10

-

480

Shading Units

800

24

TMUs

40

8

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

6.400 GPixel/s

Pixel Rate

13.60 GPixel/s

19.20 GTexel/s

Texture Rate

34.00 GTexel/s

-

768.0 GFLOPS

FP32 (float)

1360 GFLOPS

-

FP64 (double)

272.0 GFLOPS

Board Design

66W

TDP

190W

250 W

Suggested PSU

450 W

1x DVI 1x HDMI 1.3a 1x VGA

Outputs

2x DVI 1x S-Video

None

Power Connectors

2x 6-pin

Graphics Processor

Turks

GPU Name

RV790

Turks XT (215-0803000)

GPU Variant

RV790 XT (215-0758016)

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

0.716 billion

Transistors

0.959 billion

118 mm²

Die Size

282 mm²

Graphics Features

11.2 (11_0)

DirectX

10.1 (10_1)

4.4

OpenGL

3.3

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

5.0

Shader Model

4.1

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