NVIDIA GeForce GTX 490 vs ATI Radeon HD 3870 Mac Edition

VS

NVIDIA GeForce GTX 490

ATI Radeon HD 3870 Mac Edition

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 490 and 512MB VRAM Radeon HD 3870 Mac Edition 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 512GB)

Larger VRAM bandwidth (164.0GB/s vs 72.06GB/s)

160 additional rendering cores

ATI Radeon HD 3870 Mac Edition 's Advantages

Lower TDP (106W vs 365W)

Score

Benchmark

FP32 (float)

GeForce GTX 490 +134%

1.166 TFLOPS

Radeon HD 3870 Mac Edition

0.497 TFLOPS

GeForce GTX 490

VS

Radeon HD 3870 Mac Edition

Graphics Card

Unknown

Release Date

Jun 2008

GeForce 400

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

854 MHz

Memory Clock

1126 MHz

Memory

1536MB

Memory Size

512MB

GDDR5

Memory Type

GDDR4

384bit

Memory Bus

256bit

164.0GB/s

Bandwidth

72.06GB/s

Render Config

-

Compute Units

4

15

SM Count

-

480

Shading Units

320

60

TMUs

16

48

ROPs

16

-

64 KB (per SM)

L1 Cache

-

768 KB

L2 Cache

256 KB

-

Theoretical Performance

18.24 GPixel/s

Pixel Rate

12.43 GPixel/s

36.48 GTexel/s

Texture Rate

12.43 GTexel/s

-

1166 GFLOPS

FP32 (float)

497.3 GFLOPS

145.8 GFLOPS

FP64 (double)

99.46 GFLOPS

Board Design

365W

TDP

106W

750 W

Suggested PSU

300 W

3x DVI 1x mini-DisplayPort

Outputs

2x DVI 1x S-Video

2x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

GF100

GPU Name

RV670

GF100-375-A3

GPU Variant

RV670 XT (215-0708005)

Fermi

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

3.1 billion

Transistors

0.666 billion

529 mm²

Die Size

192 mm²

Graphics Features

12 (11_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3 (full) 4.0 (partial)

1.1

OpenCL

N/A

Vulkan

N/A

2.0

CUDA

-

5.1

Shader Model

4.1

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