NVIDIA GeForce GTX 490 vs AMD Radeon HD 6390

VS

NVIDIA GeForce GTX 490

AMD Radeon HD 6390

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 490 and 1024MB VRAM Radeon HD 6390 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 490 's Advantages

More VRAM (1536GB vs 1024GB)

Larger VRAM bandwidth (164.0GB/s vs 16.00GB/s)

160 additional rendering cores

AMD Radeon HD 6390 's Advantages

Lower TDP (39W vs 365W)

Score

Benchmark

FP32 (float)

GeForce GTX 490 +231%

1.166 TFLOPS

Radeon HD 6390

0.352 TFLOPS

GeForce GTX 490

VS

Radeon HD 6390

Graphics Card

Unknown

Release Date

Jul 2011

GeForce 400

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

854 MHz

Memory Clock

500 MHz

Memory

1536MB

Memory Size

1024MB

GDDR5

Memory Type

DDR2

384bit

Memory Bus

128bit

164.0GB/s

Bandwidth

16.00GB/s

Render Config

-

Compute Units

4

15

SM Count

-

480

Shading Units

320

60

TMUs

16

48

ROPs

8

-

64 KB (per SM)

L1 Cache

8 KB (per CU)

768 KB

L2 Cache

256 KB

-

Theoretical Performance

18.24 GPixel/s

Pixel Rate

4.400 GPixel/s

36.48 GTexel/s

Texture Rate

8.800 GTexel/s

-

1166 GFLOPS

FP32 (float)

352.0 GFLOPS

145.8 GFLOPS

FP64 (double)

-

Board Design

365W

TDP

39W

750 W

Suggested PSU

200 W

3x DVI 1x mini-DisplayPort

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

2x 8-pin

Power Connectors

None

Graphics Processor

GF100

GPU Name

Redwood

GF100-375-A3

GPU Variant

Redwood LE

Fermi

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

3.1 billion

Transistors

0.627 billion

529 mm²

Die Size

104 mm²

Graphics Features

12 (11_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

2.0

CUDA

-

5.1

Shader Model

5.0

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