ATI Mobility Radeon HD 4650 vs ATI Mobility Radeon HD 3850

VS

ATI Mobility Radeon HD 4650

ATI Mobility Radeon HD 3850

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 4650 and 512MB VRAM Mobility Radeon HD 3850 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 4650 's Advantages

Released 7 months late

ATI Mobility Radeon HD 3850 's Advantages

Larger VRAM bandwidth (48.00GB/s vs 19.20GB/s)

Score

Benchmark

FP32 (float)

Mobility Radeon HD 4650

0.32 TFLOPS

Mobility Radeon HD 3850 +15%

0.371 TFLOPS

Mobility Radeon HD 4650

VS

Mobility Radeon HD 3850

Graphics Card

Jan 2009

Release Date

Jun 2008

M9x

Generation

M8x

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

600 MHz

Memory Clock

750 MHz

Memory

512MB

Memory Size

512MB

DDR2

Memory Type

GDDR3

128bit

Memory Bus

256bit

19.20GB/s

Bandwidth

48.00GB/s

Render Config

4

Compute Units

4

-

320

Shading Units

320

32

TMUs

16

8

ROPs

16

-

16 KB (per CU)

L1 Cache

-

128 KB

L2 Cache

256 KB

-

Theoretical Performance

4.000 GPixel/s

Pixel Rate

9.280 GPixel/s

16.00 GTexel/s

Texture Rate

9.280 GTexel/s

-

320.0 GFLOPS

FP32 (float)

371.2 GFLOPS

-

FP64 (double)

74.24 GFLOPS

Board Design

35W

TDP

35W

-

No outputs

Outputs

No outputs

-

Graphics Processor

M96

GPU Name

M88

-

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.514 billion

Transistors

0.666 billion

146 mm²

Die Size

192 mm²

Graphics Features

10.1 (10_1)

DirectX

10.1 (10_1)

3.3

OpenGL

3.3

1.1

OpenCL

N/A

Vulkan

N/A

-

4.1

Shader Model

4.1

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