AMD Radeon HD 8870 OEM vs ATI Radeon HD 2950 PRO

VS

AMD Radeon HD 8870 OEM

ATI Radeon HD 2950 PRO

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 8870 OEM and 256MB VRAM Radeon HD 2950 PRO 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 256GB)

Larger VRAM bandwidth (153.6GB/s vs 38.40GB/s)

960 additional rendering cores

ATI Radeon HD 2950 PRO 's Advantages

Lower TDP (75W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 8870 OEM +566%

2.56 TFLOPS

Radeon HD 2950 PRO

0.384 TFLOPS

Radeon HD 8870 OEM

VS

Radeon HD 2950 PRO

Graphics Card

Jan 2013

Release Date

Unknown

Sea Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1200 MHz

Memory Clock

600 MHz

Memory

2GB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

256bit

153.6GB/s

Bandwidth

38.40GB/s

Render Config

20

Compute Units

4

-

1280

Shading Units

320

80

TMUs

16

32

ROPs

16

-

16 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

256 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

9.600 GPixel/s

80.00 GTexel/s

Texture Rate

9.600 GTexel/s

-

2.560 TFLOPS

FP32 (float)

384.0 GFLOPS

160.0 GFLOPS

FP64 (double)

76.80 GFLOPS

Board Design

175W

TDP

75W

450 W

Suggested PSU

250 W

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

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Pitcairn

GPU Name

RV670

Pitcairn XT (215-0828047)

GPU Variant

RV670 PRO ES (215-0708001)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

2.8 billion

Transistors

0.666 billion

212 mm²

Die Size

192 mm²

Graphics Features

12 (11_1)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3 (full) 4.0 (partial)

1.2

OpenCL

N/A

1.2

Vulkan

N/A

-

5.1

Shader Model

4.1

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