AMD Radeon HD 6390 vs NVIDIA GeForce GTX 660 OEM

VS

AMD Radeon HD 6390

NVIDIA GeForce GTX 660 OEM

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6390 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 6390 's Advantages

Lower TDP (39W vs 130W)

NVIDIA GeForce GTX 660 OEM 's Advantages

Released 1 years and 1 months late

Boost Clock888MHz

More VRAM (1536GB vs 1024GB)

Larger VRAM bandwidth (134.4GB/s vs 16.00GB/s)

832 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6390

0.352 TFLOPS

GeForce GTX 660 OEM +481%

2.046 TFLOPS

Radeon HD 6390

VS

GeForce GTX 660 OEM

Graphics Card

Jul 2011

Release Date

Aug 2012

Northern 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

500 MHz

Memory Clock

1400 MHz

Memory

1024MB

Memory Size

1536MB

DDR2

Memory Type

GDDR5

128bit

Memory Bus

192bit

16.00GB/s

Bandwidth

134.4GB/s

Render Config

4

Compute Units

-

320

Shading Units

1152

16

TMUs

96

8

ROPs

24

-

8 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

384 KB

-

Theoretical Performance

4.400 GPixel/s

Pixel Rate

21.31 GPixel/s

8.800 GTexel/s

Texture Rate

85.25 GTexel/s

-

352.0 GFLOPS

FP32 (float)

2.046 TFLOPS

-

FP64 (double)

85.25 GFLOPS

Board Design

39W

TDP

130W

200 W

Suggested PSU

300 W

1x DVI 1x HDMI 1.3a 1x VGA

Outputs

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

None

Power Connectors

1x 6-pin

Graphics Processor

Redwood

GPU Name

GK104

Redwood LE

GPU Variant

GK104-200-KD-A2

TeraScale 2

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.627 billion

Transistors

3.54 billion

104 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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