AMD Radeon R7 250 vs AMD Radeon R9 255 OEM

VS

We compared two Desktop platform GPUs: 1024MB VRAM Radeon R7 250 and 2GB VRAM Radeon R9 255 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R7 250 's Advantages

Lower TDP (55W vs 65W)

AMD Radeon R9 255 OEM 's Advantages

Boost Clock930MHz

More VRAM (2GB vs 1GB)

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

Score

Benchmark

FP32 (float)

Radeon R7 250

0.717 TFLOPS

Radeon R9 255 OEM +32%

0.952 TFLOPS

Radeon R7 250

VS

Radeon R9 255 OEM

Graphics Card

Oct 2013

Release Date

Dec 2013

Volcanic Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

900 MHz

-

Boost Clock

930 MHz

900 MHz

Memory Clock

1150 MHz

Memory

1024MB

Memory Size

2GB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

128bit

28.80GB/s

Bandwidth

73.60GB/s

Render Config

-

SM Count

-

8

Compute Units

8

512

Shading Units

512

32

TMUs

32

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

Theoretical Performance

11.20 GPixel/s

Pixel Rate

14.88 GPixel/s

22.40 GTexel/s

Texture Rate

29.76 GTexel/s

-

FP16 (half)

-

716.8 GFLOPS

FP32 (float)

952.3 GFLOPS

44.80 GFLOPS

FP64 (double)

59.52 GFLOPS

Graphics Processor

Cape Verde

GPU Name

Cape Verde

Cape Verde PRO

GPU Variant

Cape Verde PRX

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.5 billion

Transistors

1.5 billion

123 mm²

Die Size

123 mm²

Board Design

55W

TDP

65W

250 W

Suggested PSU

250 W

1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

Outputs

No outputs

None

Power Connectors

1x 6-pin

Graphics Features

12 (11_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.2

OpenCL

1.2

Vulkan

1.2

-

CUDA

-

5.1

Shader Model

5.1

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