AMD Radeon HD 8490 OEM vs AMD Radeon HD 7790

VS

AMD Radeon HD 8490 OEM

AMD Radeon HD 7790

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 8490 OEM and 1024MB VRAM Radeon HD 7790 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8490 OEM 's Advantages

Lower TDP (35W vs 85W)

AMD Radeon HD 7790 's Advantages

Larger VRAM bandwidth (96.00GB/s vs 14.40GB/s)

736 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8490 OEM

0.28 TFLOPS

Radeon HD 7790 +540%

1.792 TFLOPS

Radeon HD 8490 OEM

VS

Radeon HD 7790

Graphics Card

Jul 2013

Release Date

Mar 2013

Sea Islands

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

900 MHz

Memory Clock

1500 MHz

Memory

1024MB

Memory Size

1024MB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

128bit

14.40GB/s

Bandwidth

96.00GB/s

Render Config

2

Compute Units

14

-

160

Shading Units

896

8

TMUs

56

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

56.00 GTexel/s

-

280.0 GFLOPS

FP32 (float)

1.792 TFLOPS

-

FP64 (double)

112.0 GFLOPS

Board Design

35W

TDP

85W

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

Bonaire

Caicos XTX

GPU Variant

Bonaire XT (215-0839039)

TeraScale 2

Architecture

GCN 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.37 billion

Transistors

2.08 billion

67 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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