AMD Radeon R9 255 OEM vs ATI Radeon HD 2600 XT X2

VS

AMD Radeon R9 255 OEM

ATI Radeon HD 2600 XT X2

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 255 OEM and 512MB VRAM Radeon HD 2600 XT X2 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 6 years and 5 months late

Boost Clock930MHz

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (73.60GB/s vs 25.60GB/s)

392 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 255 OEM +395%

0.952 TFLOPS

Radeon HD 2600 XT X2

0.192 TFLOPS

Radeon R9 255 OEM

VS

Radeon HD 2600 XT X2

Graphics Card

Dec 2013

Release Date

Jul 2007

Volcanic Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

900 MHz

Base Clock

-

930 MHz

Boost Clock

-

1150 MHz

Memory Clock

800 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

128bit

73.60GB/s

Bandwidth

25.60GB/s

Render Config

8

Compute Units

3

-

512

Shading Units

120

32

TMUs

8

16

ROPs

4

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

64 KB

-

Theoretical Performance

14.88 GPixel/s

Pixel Rate

3.200 GPixel/s

29.76 GTexel/s

Texture Rate

6.400 GTexel/s

-

952.3 GFLOPS

FP32 (float)

192.0 GFLOPS

59.52 GFLOPS

FP64 (double)

-

Board Design

65W

TDP

Unknown

250 W

Suggested PSU

200 W

No outputs

Outputs

4x DVI 1x S-Video

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Cape Verde

GPU Name

RV630

Cape Verde PRX

GPU Variant

-

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

65 nm

1.5 billion

Transistors

0.39 billion

123 mm²

Die Size

153 mm²

Graphics Features

12 (11_1)

DirectX

10.0 (10_0)

4.6

OpenGL

3.3

1.2

OpenCL

N/A

1.2

Vulkan

N/A

-

5.1

Shader Model

4.0

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