AMD Radeon HD 7720 OEM vs AMD Radeon HD 8770 OEM

VS

AMD Radeon HD 7720 OEM

AMD Radeon HD 8770 OEM

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 7720 OEM and 1024MB VRAM Radeon HD 8770 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 96.00GB/s)

AMD Radeon HD 8770 OEM 's Advantages

Released 6 months late

96 additional rendering cores

Lower TDP (85W vs 150W)

Score

Benchmark

FP32 (float)

Radeon HD 7720 OEM

1.344 TFLOPS

Radeon HD 8770 OEM +40%

1.882 TFLOPS

Radeon HD 7720 OEM

VS

Radeon HD 8770 OEM

Graphics Card

Mar 2013

Release Date

Sep 2013

Southern Islands

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1050 MHz

Memory Clock

1500 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

134.4GB/s

Bandwidth

96.00GB/s

Render Config

10

Compute Units

14

-

800

Shading Units

896

40

TMUs

56

32

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

26.88 GPixel/s

Pixel Rate

16.80 GPixel/s

33.60 GTexel/s

Texture Rate

58.80 GTexel/s

-

1344 GFLOPS

FP32 (float)

1.882 TFLOPS

-

FP64 (double)

117.6 GFLOPS

Board Design

150W

TDP

85W

450 W

Suggested PSU

250 W

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

Outputs

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

-

Power Connectors

1x 6-pin

Graphics Processor

Barts

GPU Name

Bonaire

Barts LE (215-0798002)

GPU Variant

Bonaire XT (215-0839039)

TeraScale 2

Architecture

GCN 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.7 billion

Transistors

2.08 billion

255 mm²

Die Size

160 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (12_0)

4.4

OpenGL

4.6

1.2

OpenCL

2.0

N/A

Vulkan

1.2

-

5.0

Shader Model

6.3

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