AMD Radeon HD 7720 OEM vs AMD Radeon R9 255 OEM

VS

AMD Radeon HD 7720 OEM AMD Radeon R9 255 OEM

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 7720 OEM 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 HD 7720 OEM 's Advantages

Larger VRAM bandwidth (134.4GB/s vs 73.60GB/s)

288 additional rendering cores

AMD Radeon R9 255 OEM 's Advantages

Released 9 months late

Boost Clock930MHz

More VRAM (2GB vs 1GB)

Lower TDP (65W vs 150W)

Score

Benchmark

FP32 (float)

Radeon HD 7720 OEM +41%

1.344 TFLOPS

Radeon R9 255 OEM

0.952 TFLOPS

Radeon HD 7720 OEM

VS

Radeon R9 255 OEM

Graphics Card

Mar 2013

Release Date

Dec 2013

Southern Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

900 MHz

-

Boost Clock

930 MHz

1050 MHz

Memory Clock

1150 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

134.4GB/s

Bandwidth

73.60GB/s

Render Config

-

SM Count

-

10

Compute Units

8

800

Shading Units

512

40

TMUs

32

ROPs

16

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

Theoretical Performance

26.88 GPixel/s

Pixel Rate

14.88 GPixel/s

33.60 GTexel/s

Texture Rate

29.76 GTexel/s

-

FP16 (half)

-

1344 GFLOPS

FP32 (float)

952.3 GFLOPS

-

FP64 (double)

59.52 GFLOPS

Graphics Processor

Barts

GPU Name

Cape Verde

Barts LE (215-0798002)

GPU Variant

Cape Verde PRX

TeraScale 2

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.7 billion

Transistors

1.5 billion

255 mm²

Die Size

123 mm²

Board Design

150W

TDP

65W

450 W

Suggested PSU

250 W

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

Outputs

No outputs

-

Power Connectors

1x 6-pin

Graphics Features

11.2 (11_0)

DirectX

12 (11_1)

4.4

OpenGL

4.6

1.2

OpenCL

1.2

N/A

Vulkan

1.2

-

CUDA

-

5.0

Shader Model

5.1

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