AMD Radeon R9 255 OEM vs ATI Radeon HD 4650

VS

AMD Radeon R9 255 OEM

ATI Radeon HD 4650

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 255 OEM and 256MB VRAM Radeon HD 4650 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 255 OEM 's Advantages

Released 5 years and 3 months late

Boost Clock930MHz

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (73.60GB/s vs 22.40GB/s)

192 additional rendering cores

ATI Radeon HD 4650 's Advantages

Lower TDP (48W vs 65W)

Score

Benchmark

FP32 (float)

Radeon R9 255 OEM +147%

0.952 TFLOPS

Radeon HD 4650

0.384 TFLOPS

Radeon R9 255 OEM

VS

Radeon HD 4650

Graphics Card

Dec 2013

Release Date

Sep 2008

Volcanic Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

900 MHz

Base Clock

-

930 MHz

Boost Clock

-

1150 MHz

Memory Clock

700 MHz

Memory

2GB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

128bit

73.60GB/s

Bandwidth

22.40GB/s

Render Config

8

Compute Units

4

-

512

Shading Units

320

32

TMUs

32

16

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

128 KB

-

Theoretical Performance

14.88 GPixel/s

Pixel Rate

4.800 GPixel/s

29.76 GTexel/s

Texture Rate

19.20 GTexel/s

-

952.3 GFLOPS

FP32 (float)

384.0 GFLOPS

59.52 GFLOPS

FP64 (double)

-

Board Design

65W

TDP

48W

250 W

Suggested PSU

200 W

No outputs

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

-

Graphics Processor

Cape Verde

GPU Name

RV730

Cape Verde PRX

GPU Variant

RV730 PRO (215-0719056)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

1.5 billion

Transistors

0.514 billion

123 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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