AMD Radeon HD 8870 OEM vs AMD Radeon HD 6950

VS

AMD Radeon HD 8870 OEM

AMD Radeon HD 6950

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 8870 OEM and 2GB VRAM Radeon HD 6950 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 1 months late

Lower TDP (175W vs 200W)

AMD Radeon HD 6950 's Advantages

Larger VRAM bandwidth (160.0GB/s vs 153.6GB/s)

128 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8870 OEM +13%

2.56 TFLOPS

Radeon HD 6950

2.253 TFLOPS

Radeon HD 8870 OEM

VS

Radeon HD 6950

Graphics Card

Jan 2013

Release Date

Dec 2010

Sea Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1200 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

153.6GB/s

Bandwidth

160.0GB/s

Render Config

20

Compute Units

22

-

1280

Shading Units

1408

80

TMUs

88

32

ROPs

32

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

25.60 GPixel/s

80.00 GTexel/s

Texture Rate

70.40 GTexel/s

-

2.560 TFLOPS

FP32 (float)

2.253 TFLOPS

160.0 GFLOPS

FP64 (double)

563.2 GFLOPS

Board Design

175W

TDP

200W

450 W

Suggested PSU

550 W

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

Outputs

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

2x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Pitcairn

GPU Name

Cayman

Pitcairn XT (215-0828047)

GPU Variant

Cayman PRO (215-0807019)

GCN 1.0

Architecture

TeraScale 3

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.8 billion

Transistors

2.64 billion

212 mm²

Die Size

389 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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