AMD Radeon HD 6970 vs ATI Radeon HD 4850 X2

VS

AMD Radeon HD 6970

ATI Radeon HD 4850 X2

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6970 and 512MB VRAM Radeon HD 4850 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6970 's Advantages

Released 2 years and 1 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (176.0GB/s vs 63.68GB/s)

736 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6970 +170%

2.703 TFLOPS

Radeon HD 4850 X2

1 TFLOPS

Radeon HD 6970

VS

Radeon HD 4850 X2

Graphics Card

Dec 2010

Release Date

Nov 2008

Northern Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

995 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

256bit

176.0GB/s

Bandwidth

63.68GB/s

Render Config

24

Compute Units

10

-

1536

Shading Units

800

96

TMUs

40

32

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

28.16 GPixel/s

Pixel Rate

10.00 GPixel/s

84.48 GTexel/s

Texture Rate

25.00 GTexel/s

-

2.703 TFLOPS

FP32 (float)

1000 GFLOPS

675.8 GFLOPS

FP64 (double)

200.0 GFLOPS

Board Design

250W

TDP

250W

600 W

Suggested PSU

600 W

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

Outputs

4x DVI 1x S-Video

1x 6-pin + 1x 8-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Cayman

GPU Name

R700

Cayman XT (215-0807007)

GPU Variant

R700 PRO (215-0669065)

TeraScale 3

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

2.64 billion

Transistors

0.956 billion

389 mm²

Die Size

256 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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