AMD Radeon HD 8490 OEM vs AMD Radeon HD 7770 GHz Edition

VS

AMD Radeon HD 8490 OEM

AMD Radeon HD 7770 GHz Edition

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 8490 OEM and 1024MB VRAM Radeon HD 7770 GHz Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8490 OEM 's Advantages

Released 1 years and 5 months late

Lower TDP (35W vs 80W)

AMD Radeon HD 7770 GHz Edition 's Advantages

Larger VRAM bandwidth (72.00GB/s vs 14.40GB/s)

480 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8490 OEM

0.28 TFLOPS

Radeon HD 7770 GHz Edition +357%

1.28 TFLOPS

Radeon HD 8490 OEM

VS

Radeon HD 7770 GHz Edition

Graphics Card

Jul 2013

Release Date

Feb 2012

Sea Islands

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

900 MHz

Memory Clock

1125 MHz

Memory

1024MB

Memory Size

1024MB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

128bit

14.40GB/s

Bandwidth

72.00GB/s

Render Config

2

Compute Units

10

-

160

Shading Units

640

8

TMUs

40

4

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

256 KB

-

Theoretical Performance

3.500 GPixel/s

Pixel Rate

16.00 GPixel/s

7.000 GTexel/s

Texture Rate

40.00 GTexel/s

-

280.0 GFLOPS

FP32 (float)

1280 GFLOPS

-

FP64 (double)

80.00 GFLOPS

Board Design

35W

TDP

80W

200 W

Suggested PSU

250 W

1x DVI 1x DisplayPort 1.1

Outputs

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

None

Power Connectors

1x 6-pin

Graphics Processor

Caicos

GPU Name

Cape Verde

Caicos XTX

GPU Variant

Cape Verde XT

TeraScale 2

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.37 billion

Transistors

1.5 billion

67 mm²

Die Size

123 mm²

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

-

5.0

Shader Model

5.1

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