AMD Radeon R9 255 OEM vs ATI Radeon HD 4830

VS

AMD Radeon R9 255 OEM

ATI Radeon HD 4830

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 255 OEM and 512MB VRAM Radeon HD 4830 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 2 months late

Boost Clock930MHz

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (73.60GB/s vs 57.60GB/s)

Lower TDP (65W vs 95W)

ATI Radeon HD 4830 's Advantages

128 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 255 OEM +29%

0.952 TFLOPS

Radeon HD 4830

0.736 TFLOPS

Radeon R9 255 OEM

VS

Radeon HD 4830

Graphics Card

Dec 2013

Release Date

Oct 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

900 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

256bit

73.60GB/s

Bandwidth

57.60GB/s

Render Config

8

Compute Units

8

-

512

Shading Units

640

32

TMUs

32

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

14.88 GPixel/s

Pixel Rate

9.200 GPixel/s

29.76 GTexel/s

Texture Rate

18.40 GTexel/s

-

952.3 GFLOPS

FP32 (float)

736.0 GFLOPS

59.52 GFLOPS

FP64 (double)

147.2 GFLOPS

Board Design

65W

TDP

95W

250 W

Suggested PSU

250 W

No outputs

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Cape Verde

GPU Name

RV770

Cape Verde PRX

GPU Variant

RV770 LE (215-0669075)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

1.5 billion

Transistors

0.956 billion

123 mm²

Die Size

256 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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