AMD Radeon HD 8870 OEM vs ATI Radeon HD 5950

VS

AMD Radeon HD 8870 OEM

ATI Radeon HD 5950

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 8870 OEM and 1024MB VRAM ATI Radeon HD 5950 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8870 OEM 's Advantages

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (153.6GB/s vs 128.0GB/s)

Lower TDP (175W vs 302W)

ATI Radeon HD 5950 's Advantages

160 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8870 OEM +22%

2.56 TFLOPS

ATI Radeon HD 5950

2.088 TFLOPS

Radeon HD 8870 OEM

VS

ATI Radeon HD 5950

Graphics Card

Jan 2013

Release Date

Unknown

Sea Islands

Generation

Evergreen

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1200 MHz

Memory Clock

1000 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

153.6GB/s

Bandwidth

128.0GB/s

Render Config

20

Compute Units

18

-

1280

Shading Units

1440

80

TMUs

72

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

23.20 GPixel/s

80.00 GTexel/s

Texture Rate

52.20 GTexel/s

-

2.560 TFLOPS

FP32 (float)

2.088 TFLOPS

160.0 GFLOPS

FP64 (double)

-

Board Design

175W

TDP

302W

450 W

Suggested PSU

700 W

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

Outputs

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

2x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Pitcairn

GPU Name

Hemlock

Pitcairn XT (215-0828047)

GPU Variant

Hemlock PRO

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.8 billion

Transistors

2.154 billion

212 mm²

Die Size

334 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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