AMD Radeon HD 8490 OEM vs NVIDIA GeForce GTX 660 OEM

VS

AMD Radeon HD 8490 OEM

NVIDIA GeForce GTX 660 OEM

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 8490 OEM and 1536MB VRAM GeForce GTX 660 OEM 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 130W)

NVIDIA GeForce GTX 660 OEM 's Advantages

Boost Clock888MHz

More VRAM (1536GB vs 1024GB)

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

992 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8490 OEM

0.28 TFLOPS

GeForce GTX 660 OEM +630%

2.046 TFLOPS

Radeon HD 8490 OEM

VS

GeForce GTX 660 OEM

Graphics Card

Jul 2013

Release Date

Aug 2012

Sea Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

823 MHz

-

Boost Clock

888 MHz

900 MHz

Memory Clock

1400 MHz

Memory

1024MB

Memory Size

1536MB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

192bit

14.40GB/s

Bandwidth

134.4GB/s

Render Config

2

Compute Units

-

160

Shading Units

1152

8

TMUs

96

4

ROPs

24

-

8 KB (per CU)

L1 Cache

16 KB (per SMX)

128 KB

L2 Cache

384 KB

-

Theoretical Performance

3.500 GPixel/s

Pixel Rate

21.31 GPixel/s

7.000 GTexel/s

Texture Rate

85.25 GTexel/s

-

280.0 GFLOPS

FP32 (float)

2.046 TFLOPS

-

FP64 (double)

85.25 GFLOPS

Board Design

35W

TDP

130W

200 W

Suggested PSU

300 W

1x DVI 1x DisplayPort 1.1

Outputs

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

None

Power Connectors

1x 6-pin

Graphics Processor

Caicos

GPU Name

GK104

Caicos XTX

GPU Variant

GK104-200-KD-A2

TeraScale 2

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.37 billion

Transistors

3.54 billion

67 mm²

Die Size

294 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.0

5.0

Shader Model

5.1

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