ATI Radeon HD 4870 Mac Edition vs ATI Radeon HD 3650

VS

ATI Radeon HD 4870 Mac Edition ATI Radeon HD 3650

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 Mac Edition and 256MB VRAM Radeon HD 3650 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4870 Mac Edition 's Advantages

Released 1 years late

More VRAM (512GB vs 256GB)

Larger VRAM bandwidth (108.8GB/s vs 25.60GB/s)

680 additional rendering cores

ATI Radeon HD 3650 's Advantages

Lower TDP (65W vs 150W)

Score

Benchmark

FP32 (float)

Radeon HD 4870 Mac Edition +589%

1.2 TFLOPS

Radeon HD 3650

0.174 TFLOPS

Radeon HD 4870 Mac Edition

VS

Radeon HD 3650

Graphics Card

Jan 2009

Release Date

Jan 2008

Radeon R700

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

850 MHz

Memory Clock

800 MHz

Memory

512MB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

128bit

108.8GB/s

Bandwidth

25.60GB/s

Render Config

-

SM Count

-

10

Compute Units

3

800

Shading Units

120

40

TMUs

8

16

ROPs

4

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

128 KB

Theoretical Performance

12.00 GPixel/s

Pixel Rate

2.900 GPixel/s

30.00 GTexel/s

Texture Rate

5.800 GTexel/s

-

FP16 (half)

-

1200 GFLOPS

FP32 (float)

174.0 GFLOPS

240.0 GFLOPS

FP64 (double)

-

Graphics Processor

RV770

GPU Name

RV635

RV770 XT Mac (215-0669080)

GPU Variant

RV635 PRO (215-0682008)

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.956 billion

Transistors

0.378 billion

256 mm²

Die Size

135 mm²

Board Design

150W

TDP

65W

450 W

Suggested PSU

250 W

1x DVI 1x mini-DisplayPort 1.0

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

None

Graphics Features

10.1 (10_1)

DirectX

10.1 (10_1)

3.3

OpenGL

3.3

1.1

OpenCL

N/A

Vulkan

N/A

-

CUDA

-

4.1

Shader Model

4.1

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