AMD Radeon HD 8490 OEM vs AMD Radeon HD 6790

VS

AMD Radeon HD 8490 OEM

AMD Radeon HD 6790

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 8490 OEM and 1024MB VRAM Radeon HD 6790 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 2 years and 3 months late

Lower TDP (35W vs 150W)

AMD Radeon HD 6790 's Advantages

Larger VRAM bandwidth (134.4GB/s vs 14.40GB/s)

640 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8490 OEM

0.28 TFLOPS

Radeon HD 6790 +380%

1.344 TFLOPS

Radeon HD 8490 OEM

VS

Radeon HD 6790

Graphics Card

Jul 2013

Release Date

Apr 2011

Sea Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

900 MHz

Memory Clock

1050 MHz

Memory

1024MB

Memory Size

1024MB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

256bit

14.40GB/s

Bandwidth

134.4GB/s

Render Config

2

Compute Units

10

-

160

Shading Units

800

8

TMUs

40

4

ROPs

16

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

128 KB

L2 Cache

512 KB

-

Theoretical Performance

3.500 GPixel/s

Pixel Rate

13.44 GPixel/s

7.000 GTexel/s

Texture Rate

33.60 GTexel/s

-

280.0 GFLOPS

FP32 (float)

1344 GFLOPS

-

Board Design

35W

TDP

150W

200 W

Suggested PSU

450 W

1x DVI 1x DisplayPort 1.1

Outputs

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

None

Power Connectors

2x 6-pin

Graphics Processor

Caicos

GPU Name

Barts

Caicos XTX

GPU Variant

Barts LE (215-0798002)

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.37 billion

Transistors

1.7 billion

67 mm²

Die Size

255 mm²

Graphics Features

11.2 (11_0)

DirectX

11.2 (11_0)

4.4

OpenGL

4.4

1.2

OpenCL

1.2

N/A

Vulkan

N/A

-

5.0

Shader Model

5.0

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