AMD Radeon R9 255 OEM vs AMD Radeon HD 6750

VS

AMD Radeon R9 255 OEM

AMD Radeon HD 6750

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 255 OEM and 1024MB VRAM Radeon HD 6750 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 2 years and 11 months late

Boost Clock930MHz

More VRAM (2GB vs 1024GB)

Lower TDP (65W vs 86W)

AMD Radeon HD 6750 's Advantages

208 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 255 OEM

0.952 TFLOPS

Radeon HD 6750 +5%

1.008 TFLOPS

Radeon R9 255 OEM

VS

Radeon HD 6750

Graphics Card

Dec 2013

Release Date

Jan 2011

Volcanic Islands

Generation

Northern Islands

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

1150 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

73.60GB/s

Bandwidth

73.60GB/s

Render Config

8

Compute Units

9

-

512

Shading Units

720

32

TMUs

36

16

ROPs

16

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

14.88 GPixel/s

Pixel Rate

11.20 GPixel/s

29.76 GTexel/s

Texture Rate

25.20 GTexel/s

-

952.3 GFLOPS

FP32 (float)

1008 GFLOPS

59.52 GFLOPS

FP64 (double)

-

Board Design

65W

TDP

86W

250 W

Suggested PSU

250 W

No outputs

Outputs

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Cape Verde

GPU Name

Juniper

Cape Verde PRX

GPU Variant

Juniper LE (215-0754009)

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.5 billion

Transistors

1.04 billion

123 mm²

Die Size

166 mm²

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.2

OpenCL

1.2

Vulkan

N/A

-

5.1

Shader Model

5.0

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