ATI Mobility Radeon HD 3870 vs NVIDIA GeForce GTX 485M

VS

ATI Mobility Radeon HD 3870

NVIDIA GeForce GTX 485M

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 3870 and 2GB VRAM GeForce GTX 485M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 3870 's Advantages

Lower TDP (55W vs 100W)

NVIDIA GeForce GTX 485M 's Advantages

Released 2 years and 7 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (96.00GB/s vs 54.40GB/s)

64 additional rendering cores

Score

Benchmark

FP32 (float)

Mobility Radeon HD 3870

0.422 TFLOPS

GeForce GTX 485M +109%

0.883 TFLOPS

Mobility Radeon HD 3870

VS

GeForce GTX 485M

Graphics Card

Jun 2008

Release Date

Jan 2011

M8x

Generation

GeForce 400M

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

-

850 MHz

Memory Clock

750 MHz

Memory

512MB

Memory Size

2GB

GDDR3

Memory Type

GDDR5

256bit

Memory Bus

256bit

54.40GB/s

Bandwidth

96.00GB/s

Render Config

4

Compute Units

-

SM Count

8

320

Shading Units

384

16

TMUs

64

16

ROPs

32

-

L1 Cache

64 KB (per SM)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

10.56 GPixel/s

Pixel Rate

9.200 GPixel/s

10.56 GTexel/s

Texture Rate

36.80 GTexel/s

-

422.4 GFLOPS

FP32 (float)

883.2 GFLOPS

84.48 GFLOPS

FP64 (double)

73.60 GFLOPS

Board Design

55W

TDP

100W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

M88

GPU Name

GF104

-

GPU Variant

N12E-GTX-A1

TeraScale

Architecture

Fermi

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.666 billion

Transistors

1.95 billion

192 mm²

Die Size

332 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_0)

3.3

OpenGL

4.6

N/A

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

2.1

4.1

Shader Model

5.1

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