ATI Mobility Radeon HD 3870 vs NVIDIA GeForce GT 650M

VS

ATI Mobility Radeon HD 3870

NVIDIA GeForce GT 650M

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 3870 and 1024MB VRAM GeForce GT 650M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 3870 's Advantages

Larger VRAM bandwidth (54.40GB/s vs 28.80GB/s)

NVIDIA GeForce GT 650M 's Advantages

Released 3 years and 9 months late

Boost Clock950MHz

More VRAM (1024GB vs 512GB)

64 additional rendering cores

Lower TDP (45W vs 55W)

Score

Benchmark

FP32 (float)

Mobility Radeon HD 3870

0.422 TFLOPS

GeForce GT 650M +72%

0.73 TFLOPS

Mobility Radeon HD 3870

VS

GeForce GT 650M

Graphics Card

Jun 2008

Release Date

Mar 2012

M8x

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

835 MHz

-

Boost Clock

950 MHz

850 MHz

Memory Clock

900 MHz

Memory

512MB

Memory Size

1024MB

GDDR3

Memory Type

DDR3

256bit

Memory Bus

128bit

54.40GB/s

Bandwidth

28.80GB/s

Render Config

4

Compute Units

-

320

Shading Units

384

16

TMUs

32

16

ROPs

16

-

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

10.56 GPixel/s

Pixel Rate

7.600 GPixel/s

10.56 GTexel/s

Texture Rate

30.40 GTexel/s

-

422.4 GFLOPS

FP32 (float)

729.6 GFLOPS

84.48 GFLOPS

FP64 (double)

30.40 GFLOPS

Board Design

55W

TDP

45W

-

No outputs

Outputs

No outputs

-

Graphics Processor

M88

GPU Name

GK107

-

GPU Variant

N13P-GT-A2

TeraScale

Architecture

Kepler

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.666 billion

Transistors

1.27 billion

192 mm²

Die Size

118 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_0)

3.3

OpenGL

4.6

N/A

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.0

4.1

Shader Model

5.1

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