ATI Mobility Radeon HD 4670 Mac Edition vs AMD Radeon HD 7870M

VS

ATI Mobility Radeon HD 4670 Mac Edition

AMD Radeon HD 7870M

We compared two Mobile platform GPUs: 256MB VRAM Mobility Radeon HD 4670 Mac Edition and 2GB VRAM Radeon HD 7870M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 4670 Mac Edition 's Advantages

Lower TDP (35W vs 45W)

AMD Radeon HD 7870M 's Advantages

Released 2 years and 7 months late

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (64.00GB/s vs 25.28GB/s)

320 additional rendering cores

Score

Benchmark

FP32 (float)

Mobility Radeon HD 4670 Mac Edition

0.435 TFLOPS

Radeon HD 7870M +135%

1.024 TFLOPS

Mobility Radeon HD 4670 Mac Edition

VS

Radeon HD 7870M

Graphics Card

Sep 2009

Release Date

Apr 2012

M9x

Generation

London

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

790 MHz

Memory Clock

1000 MHz

Memory

256MB

Memory Size

2GB

GDDR3

Memory Type

GDDR5

128bit

Memory Bus

128bit

25.28GB/s

Bandwidth

64.00GB/s

Render Config

4

Compute Units

10

-

320

Shading Units

640

32

TMUs

40

8

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

256 KB

-

Theoretical Performance

5.440 GPixel/s

Pixel Rate

12.80 GPixel/s

21.76 GTexel/s

Texture Rate

32.00 GTexel/s

-

435.2 GFLOPS

FP32 (float)

1024 GFLOPS

-

FP64 (double)

64.00 GFLOPS

Board Design

35W

TDP

45W

-

No outputs

Outputs

No outputs

-

Graphics Processor

M96

GPU Name

Heathrow

M96 XT (216-0729051)

GPU Variant

Heathrow XT (216-0835033)

TeraScale

Architecture

GCN 1.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.514 billion

Transistors

1.5 billion

146 mm²

Die Size

123 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_1)

3.3

OpenGL

4.6

1.1

OpenCL

1.2

N/A

Vulkan

1.2

-

4.1

Shader Model

5.1

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