ATI Radeon HD 4670 X2 vs ATI Radeon HD 3650

VS

ATI Radeon HD 4670 X2

ATI Radeon HD 3650

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4670 X2 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 4670 X2 's Advantages

Released 8 months late

More VRAM (512GB vs 256GB)

200 additional rendering cores

ATI Radeon HD 3650 's Advantages

Larger VRAM bandwidth (25.60GB/s vs 22.40GB/s)

Lower TDP (65W vs 118W)

Score

Benchmark

FP32 (float)

Radeon HD 4670 X2 +175%

0.48 TFLOPS

Radeon HD 3650

0.174 TFLOPS

Radeon HD 4670 X2

VS

Radeon HD 3650

Graphics Card

Sep 2008

Release Date

Jan 2008

Radeon R700

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

700 MHz

Memory Clock

800 MHz

Memory

512MB

Memory Size

256MB

GDDR3

Memory Type

GDDR3

128bit

Memory Bus

128bit

22.40GB/s

Bandwidth

25.60GB/s

Render Config

4

Compute Units

3

-

320

Shading Units

120

32

TMUs

8

ROPs

4

-

16 KB (per CU)

L1 Cache

-

128 KB

L2 Cache

128 KB

-

Theoretical Performance

6.000 GPixel/s

Pixel Rate

2.900 GPixel/s

24.00 GTexel/s

Texture Rate

5.800 GTexel/s

-

480.0 GFLOPS

FP32 (float)

174.0 GFLOPS

-

Board Design

118W

TDP

65W

300 W

Suggested PSU

250 W

4x DVI

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

None

Graphics Processor

RV730

GPU Name

RV635

RV730 XT (215-0719047)

GPU Variant

RV635 PRO (215-0682008)

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.514 billion

Transistors

0.378 billion

146 mm²

Die Size

135 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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