AMD Radeon HD 8490 OEM vs AMD Radeon HD 7970 X2

VS

AMD Radeon HD 8490 OEM

AMD Radeon HD 7970 X2

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 8490 OEM and 3GB VRAM Radeon HD 7970 X2 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 11 months late

Lower TDP (35W vs 500W)

AMD Radeon HD 7970 X2 's Advantages

More VRAM (3GB vs 1024GB)

Larger VRAM bandwidth (264.0GB/s vs 14.40GB/s)

1888 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8490 OEM

0.28 TFLOPS

Radeon HD 7970 X2 +1253%

3.789 TFLOPS

Radeon HD 8490 OEM

VS

Radeon HD 7970 X2

Graphics Card

Jul 2013

Release Date

Aug 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

1375 MHz

Memory

1024MB

Memory Size

3GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

384bit

14.40GB/s

Bandwidth

264.0GB/s

Render Config

2

Compute Units

32

-

160

Shading Units

2048

8

TMUs

128

4

ROPs

32

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

768 KB

-

Theoretical Performance

3.500 GPixel/s

Pixel Rate

29.60 GPixel/s

7.000 GTexel/s

Texture Rate

118.4 GTexel/s

-

280.0 GFLOPS

FP32 (float)

3.789 TFLOPS

-

FP64 (double)

947.2 GFLOPS

Board Design

35W

TDP

500W

200 W

Suggested PSU

900 W

1x DVI 1x DisplayPort 1.1

Outputs

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

None

Power Connectors

3x 8-pin

Graphics Processor

Caicos

GPU Name

New Zealand

Caicos XTX

GPU Variant

-

TeraScale 2

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.37 billion

Transistors

4.313 billion

67 mm²

Die Size

352 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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