AMD Radeon HD 8970 OEM vs AMD Radeon HD 6850 X2

VS

AMD Radeon HD 8970 OEM

AMD Radeon HD 6850 X2

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 8970 OEM and 2GB VRAM Radeon HD 6850 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8970 OEM 's Advantages

Released 1 years and 4 months late

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (264.0GB/s vs 134.4GB/s)

1088 additional rendering cores

Lower TDP (250W vs 254W)

Score

Benchmark

FP32 (float)

Radeon HD 8970 OEM +146%

3.789 TFLOPS

Radeon HD 6850 X2

1.536 TFLOPS

Radeon HD 8970 OEM

VS

Radeon HD 6850 X2

Graphics Card

Jan 2013

Release Date

Sep 2011

Sea Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

1050 MHz

Memory

3GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

256bit

264.0GB/s

Bandwidth

134.4GB/s

Render Config

32

Compute Units

12

-

2048

Shading Units

960

128

TMUs

48

32

ROPs

32

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

768 KB

L2 Cache

512 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

25.60 GPixel/s

118.4 GTexel/s

Texture Rate

38.40 GTexel/s

-

3.789 TFLOPS

FP32 (float)

1.536 TFLOPS

947.2 GFLOPS

FP64 (double)

-

Board Design

250W

TDP

254W

600 W

Suggested PSU

600 W

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

Outputs

2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1

1x 6-pin + 1x 8-pin

Power Connectors

2x 8-pin

Graphics Processor

Tahiti

GPU Name

Barts

Tahiti XT (215-0821060)

GPU Variant

Barts PRO (215-0798006)

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

4.313 billion

Transistors

1.7 billion

352 mm²

Die Size

255 mm²

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.2

OpenCL

1.2

Vulkan

N/A

-

5.1

Shader Model

5.0

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