ATI Mobility Radeon HD 2700 vs ATI Mobility Radeon HD 4870 X2

VS

ATI Mobility Radeon HD 2700

ATI Mobility Radeon HD 4870 X2

We compared two Mobile platform GPUs: 256MB VRAM Mobility Radeon HD 2700 and 1024MB VRAM Mobility Radeon HD 4870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 4870 X2 's Advantages

Released 1 years and 1 months late

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (89.60GB/s vs 22.40GB/s)

680 additional rendering cores

Score

Benchmark

FP32 (float)

Mobility Radeon HD 2700

0.168 TFLOPS

Mobility Radeon HD 4870 X2 +423%

0.88 TFLOPS

Mobility Radeon HD 2700

VS

Mobility Radeon HD 4870 X2

Graphics Card

Dec 2007

Release Date

Jan 2009

M7x

Generation

M9x

Mobile

Type

Mobile

MXM-II

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

700 MHz

Memory Clock

700 MHz

Memory

256MB

Memory Size

1024MB

GDDR3

Memory Type

GDDR5

128bit

Memory Bus

256bit

22.40GB/s

Bandwidth

89.60GB/s

Render Config

3

Compute Units

10

-

120

Shading Units

800

8

TMUs

40

4

ROPs

16

-

L1 Cache

16 KB (per CU)

64 KB

L2 Cache

256 KB

-

Theoretical Performance

2.800 GPixel/s

Pixel Rate

8.800 GPixel/s

5.600 GTexel/s

Texture Rate

22.00 GTexel/s

-

168.0 GFLOPS

FP32 (float)

880.0 GFLOPS

-

FP64 (double)

176.0 GFLOPS

Board Design

35W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Power Connectors

None

Graphics Processor

M76

GPU Name

M98

-

GPU Variant

M98 XT L2 (216-0732023)

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

65 nm

Process Size

55 nm

0.39 billion

Transistors

0.956 billion

153 mm²

Die Size

256 mm²

Graphics Features

10.0 (10_0)

DirectX

10.1 (10_1)

3.3

OpenGL

3.3

N/A

OpenCL

1.1

N/A

Vulkan

N/A

-

4.0

Shader Model

4.1

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