AMD Radeon HD 6970 X2 vs AMD Radeon HD 8870 OEM

VS

AMD Radeon HD 6970 X2

AMD Radeon HD 8870 OEM

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6970 X2 and 2GB VRAM Radeon HD 8870 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6970 X2 's Advantages

Larger VRAM bandwidth (176.0GB/s vs 153.6GB/s)

256 additional rendering cores

AMD Radeon HD 8870 OEM 's Advantages

Lower TDP (175W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 6970 X2 +5%

2.703 TFLOPS

Radeon HD 8870 OEM

2.56 TFLOPS

Radeon HD 6970 X2

VS

Radeon HD 8870 OEM

Graphics Card

Unknown

Release Date

Jan 2013

Northern Islands

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

1200 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

176.0GB/s

Bandwidth

153.6GB/s

Render Config

24

Compute Units

20

-

1536

Shading Units

1280

96

TMUs

80

32

ROPs

32

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

28.16 GPixel/s

Pixel Rate

32.00 GPixel/s

84.48 GTexel/s

Texture Rate

80.00 GTexel/s

-

2.703 TFLOPS

FP32 (float)

2.560 TFLOPS

-

FP64 (double)

160.0 GFLOPS

Board Design

375W

TDP

175W

750 W

Suggested PSU

450 W

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

Outputs

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

3x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

Antilles

GPU Name

Pitcairn

Antilles XT (215-0807027)

GPU Variant

Pitcairn XT (215-0828047)

TeraScale 3

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

2.64 billion

Transistors

2.8 billion

389 mm²

Die Size

212 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_1)

4.4

OpenGL

4.6

1.2

OpenCL

1.2

N/A

Vulkan

1.2

-

5.0

Shader Model

5.1

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