ATI Radeon HD 4890 vs AMD Radeon HD 6970

VS

ATI Radeon HD 4890

AMD Radeon HD 6970

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 4890 and 2GB VRAM Radeon HD 6970 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4890 's Advantages

Lower TDP (190W vs 250W)

AMD Radeon HD 6970 's Advantages

Released 1 years and 8 months late

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (176.0GB/s vs 124.8GB/s)

736 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 4890

1.36 TFLOPS

Radeon HD 6970 +98%

2.703 TFLOPS

Radeon HD 4890

VS

Radeon HD 6970

Graphics Card

Apr 2009

Release Date

Dec 2010

Radeon R700

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

975 MHz

Memory Clock

1375 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

124.8GB/s

Bandwidth

176.0GB/s

Render Config

10

Compute Units

24

-

800

Shading Units

1536

40

TMUs

96

16

ROPs

32

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

13.60 GPixel/s

Pixel Rate

28.16 GPixel/s

34.00 GTexel/s

Texture Rate

84.48 GTexel/s

-

1360 GFLOPS

FP32 (float)

2.703 TFLOPS

272.0 GFLOPS

FP64 (double)

675.8 GFLOPS

Board Design

190W

TDP

250W

450 W

Suggested PSU

600 W

2x DVI 1x S-Video

Outputs

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

2x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

RV790

GPU Name

Cayman

RV790 XT (215-0758016)

GPU Variant

Cayman XT (215-0807007)

TeraScale

Architecture

TeraScale 3

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.959 billion

Transistors

2.64 billion

282 mm²

Die Size

389 mm²

Graphics Features

10.1 (10_1)

DirectX

11.2 (11_0)

3.3

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

-

4.1

Shader Model

5.0

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