ATI Mobility Radeon HD 3850 X2 vs NVIDIA GeForce GT 635M

VS

ATI Mobility Radeon HD 3850 X2

NVIDIA GeForce GT 635M

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 3850 X2 and 1024MB VRAM GeForce GT 635M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 3850 X2 's Advantages

Larger VRAM bandwidth (48.00GB/s vs 28.80GB/s)

224 additional rendering cores

NVIDIA GeForce GT 635M 's Advantages

Released 3 years and 9 months late

More VRAM (1024GB vs 512GB)

Lower TDP (35W vs 70W)

Score

Benchmark

FP32 (float)

Mobility Radeon HD 3850 X2 +46%

0.371 TFLOPS

GeForce GT 635M

0.253 TFLOPS

Mobility Radeon HD 3850 X2

VS

GeForce GT 635M

Graphics Card

Jun 2008

Release Date

Mar 2012

M8x

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

750 MHz

Memory Clock

900 MHz

Memory

512MB

Memory Size

1024MB

GDDR3

Memory Type

DDR3

256bit

Memory Bus

128bit

48.00GB/s

Bandwidth

28.80GB/s

Render Config

4

Compute Units

-

SM Count

2

320

Shading Units

96

16

TMUs

16

ROPs

4

-

L1 Cache

64 KB (per SM)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

9.280 GPixel/s

Pixel Rate

2.640 GPixel/s

9.280 GTexel/s

Texture Rate

10.56 GTexel/s

-

371.2 GFLOPS

FP32 (float)

253.4 GFLOPS

74.24 GFLOPS

FP64 (double)

21.12 GFLOPS

Board Design

70W

TDP

35W

-

No outputs

Outputs

No outputs

-

Graphics Processor

M88

GPU Name

GF108

-

GPU Variant

N12E-GE-A1

TeraScale

Architecture

Fermi

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.666 billion

Transistors

0.585 billion

192 mm²

Die Size

116 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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