AMD Radeon HD 8870 OEM vs ATI Radeon HD 4650 AGP

VS

AMD Radeon HD 8870 OEM

ATI Radeon HD 4650 AGP

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 8870 OEM and 512MB VRAM Radeon HD 4650 AGP 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 4 years and 4 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (153.6GB/s vs 12.80GB/s)

960 additional rendering cores

ATI Radeon HD 4650 AGP 's Advantages

Lower TDP (48W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 8870 OEM +566%

2.56 TFLOPS

Radeon HD 4650 AGP

0.384 TFLOPS

Radeon HD 8870 OEM

VS

Radeon HD 4650 AGP

Graphics Card

Jan 2013

Release Date

Sep 2008

Sea Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

AGP 8x

Clock Speeds

-

1200 MHz

Memory Clock

400 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

DDR2

256bit

Memory Bus

128bit

153.6GB/s

Bandwidth

12.80GB/s

Render Config

20

Compute Units

4

-

1280

Shading Units

320

80

TMUs

32

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

128 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

4.800 GPixel/s

80.00 GTexel/s

Texture Rate

19.20 GTexel/s

-

2.560 TFLOPS

FP32 (float)

384.0 GFLOPS

160.0 GFLOPS

FP64 (double)

-

Board Design

175W

TDP

48W

450 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

2x 6-pin

Power Connectors

-

Graphics Processor

Pitcairn

GPU Name

RV730

Pitcairn XT (215-0828047)

GPU Variant

RV730 PRO (215-0719056)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

2.8 billion

Transistors

0.514 billion

212 mm²

Die Size

146 mm²

Graphics Features

12 (11_1)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

5.1

Shader Model

4.1

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