AMD Radeon HD 8870 OEM vs AMD Radeon HD 6870

VS

AMD Radeon HD 8870 OEM AMD Radeon HD 6870

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 8870 OEM and 1024MB VRAM Radeon HD 6870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8870 OEM 's Advantages

Released 2 years and 3 months late

More VRAM (2GB vs 1GB)

Larger VRAM bandwidth (153.6GB/s vs 134.4GB/s)

160 additional rendering cores

AMD Radeon HD 6870 's Advantages

Lower TDP (151W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 8870 OEM +26%

2.56 TFLOPS

Radeon HD 6870

2.016 TFLOPS

Radeon HD 8870 OEM

VS

Radeon HD 6870

Graphics Card

Jan 2013

Release Date

Oct 2010

Sea Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1200 MHz

Memory Clock

1050 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

153.6GB/s

Bandwidth

134.4GB/s

Render Config

-

SM Count

-

20

Compute Units

14

1280

Shading Units

1120

80

TMUs

56

32

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

512 KB

Theoretical Performance

32.00 GPixel/s

Pixel Rate

28.80 GPixel/s

80.00 GTexel/s

Texture Rate

50.40 GTexel/s

-

FP16 (half)

-

2.560 TFLOPS

FP32 (float)

2.016 TFLOPS

160.0 GFLOPS

FP64 (double)

-

Graphics Processor

Pitcairn

GPU Name

Barts

Pitcairn XT (215-0828047)

GPU Variant

Barts XT (215-0798000)

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.8 billion

Transistors

1.7 billion

212 mm²

Die Size

255 mm²

Board Design

175W

TDP

151W

450 W

Suggested PSU

450 W

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

Outputs

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

2x 6-pin

Power Connectors

2x 6-pin

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.2

OpenCL

1.2

Vulkan

N/A

-

CUDA

-

5.1

Shader Model

5.0

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