AMD Radeon HD 7770 GHz Edition vs AMD Radeon HD 8670 OEM

VS

AMD Radeon HD 7770 GHz Edition

AMD Radeon HD 8670 OEM

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 7770 GHz Edition and 2GB VRAM Radeon HD 8670 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7770 GHz Edition 's Advantages

256 additional rendering cores

AMD Radeon HD 8670 OEM 's Advantages

Released 11 months late

Boost Clock1050MHz

More VRAM (2GB vs 1024GB)

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

Lower TDP (75W vs 80W)

Score

Benchmark

FP32 (float)

Radeon HD 7770 GHz Edition +58%

1.28 TFLOPS

Radeon HD 8670 OEM

0.806 TFLOPS

Radeon HD 7770 GHz Edition

VS

Radeon HD 8670 OEM

Graphics Card

Feb 2012

Release Date

Jan 2013

Southern Islands

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1000 MHz

-

Boost Clock

1050 MHz

1125 MHz

Memory Clock

1150 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

72.00GB/s

Bandwidth

73.60GB/s

Render Config

10

Compute Units

6

-

640

Shading Units

384

40

TMUs

24

16

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

16.00 GPixel/s

Pixel Rate

8.400 GPixel/s

40.00 GTexel/s

Texture Rate

25.20 GTexel/s

-

1280 GFLOPS

FP32 (float)

806.4 GFLOPS

80.00 GFLOPS

FP64 (double)

50.40 GFLOPS

Board Design

80W

TDP

75W

250 W

Suggested PSU

250 W

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

Outputs

1x DVI 1x HDMI 1.4a 1x VGA

1x 6-pin

Power Connectors

None

Graphics Processor

Cape Verde

GPU Name

Oland

Cape Verde XT

GPU Variant

Oland XT (215-0837000)

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.5 billion

Transistors

0.95 billion

123 mm²

Die Size

77 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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