AMD Radeon R9 255 OEM vs AMD Radeon R7 240 OEM

VS

AMD Radeon R9 255 OEM

AMD Radeon R7 240 OEM

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 255 OEM and 2GB VRAM Radeon R7 240 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 255 OEM 's Advantages

Boost Clock has increased by 19% (930MHz vs 780MHz)

Larger VRAM bandwidth (73.60GB/s vs 28.80GB/s)

192 additional rendering cores

AMD Radeon R7 240 OEM 's Advantages

Lower TDP (50W vs 65W)

Score

Benchmark

FP32 (float)

Radeon R9 255 OEM +90%

0.952 TFLOPS

Radeon R7 240 OEM

0.499 TFLOPS

Radeon R9 255 OEM

VS

Radeon R7 240 OEM

Graphics Card

Dec 2013

Release Date

Nov 2013

Volcanic Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

900 MHz

Base Clock

730 MHz

930 MHz

Boost Clock

780 MHz

1150 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

128bit

73.60GB/s

Bandwidth

28.80GB/s

Render Config

8

Compute Units

5

-

512

Shading Units

320

32

TMUs

20

16

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

14.88 GPixel/s

Pixel Rate

6.240 GPixel/s

29.76 GTexel/s

Texture Rate

15.60 GTexel/s

-

952.3 GFLOPS

FP32 (float)

499.2 GFLOPS

59.52 GFLOPS

FP64 (double)

31.20 GFLOPS

Board Design

65W

TDP

50W

250 W

Suggested PSU

250 W

No outputs

Outputs

1x DVI 1x HDMI 1.4a 1x VGA

1x 6-pin

Power Connectors

None

Graphics Processor

Cape Verde

GPU Name

Oland

Cape Verde PRX

GPU Variant

-

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.5 billion

Transistors

0.95 billion

123 mm²

Die Size

77 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.2

OpenCL

1.2

Vulkan

1.2

-

5.1

Shader Model

5.1

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