AMD Radeon R9 255 OEM vs AMD Radeon HD 7750

VS

AMD Radeon R9 255 OEM

AMD Radeon HD 7750

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 255 OEM and 1024MB VRAM Radeon HD 7750 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 1 years and 10 months late

Boost Clock930MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (73.60GB/s vs 72.00GB/s)

AMD Radeon HD 7750 's Advantages

Lower TDP (55W vs 65W)

Score

Benchmark

FP32 (float)

Radeon R9 255 OEM +16%

0.952 TFLOPS

Radeon HD 7750

0.819 TFLOPS

Radeon R9 255 OEM

VS

Radeon HD 7750

Graphics Card

Dec 2013

Release Date

Feb 2012

Volcanic Islands

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

900 MHz

Base Clock

-

930 MHz

Boost Clock

-

1150 MHz

Memory Clock

1125 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

73.60GB/s

Bandwidth

72.00GB/s

Render Config

8

Compute Units

8

-

512

Shading Units

512

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

12.80 GPixel/s

29.76 GTexel/s

Texture Rate

25.60 GTexel/s

-

952.3 GFLOPS

FP32 (float)

819.2 GFLOPS

59.52 GFLOPS

FP64 (double)

51.20 GFLOPS

Board Design

65W

TDP

55W

250 W

Suggested PSU

250 W

No outputs

Outputs

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

1x 6-pin

Power Connectors

None

Graphics Processor

Cape Verde

GPU Name

Cape Verde

Cape Verde PRX

GPU Variant

Cape Verde PRO

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

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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