ATI Radeon HD 4650 vs ATI Radeon HD 4580

VS

We compared two Desktop platform GPUs: 256MB VRAM Radeon HD 4650 and 512MB VRAM Radeon HD 4580 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4650 's Advantages

Larger VRAM bandwidth (22.40GB/s vs 22.18GB/s)

200 additional rendering cores

Lower TDP (48W vs 65W)

ATI Radeon HD 4580 's Advantages

Released 3 years and 2 months late

More VRAM (512GB vs 256GB)

Score

Benchmark

FP32 (float)

Radeon HD 4650 +101%

0.384 TFLOPS

Radeon HD 4580

0.191 TFLOPS

Radeon HD 4650

VS

Radeon HD 4580

Graphics Card

Sep 2008

Release Date

Nov 2011

Radeon R700

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

700 MHz

Memory Clock

693 MHz

Memory

256MB

Memory Size

512MB

GDDR3

Memory Type

GDDR3

128bit

Memory Bus

128bit

22.40GB/s

Bandwidth

22.18GB/s

Render Config

-

SM Count

-

4

Compute Units

3

320

Shading Units

120

32

TMUs

8

ROPs

4

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

-

128 KB

L2 Cache

128 KB

Theoretical Performance

4.800 GPixel/s

Pixel Rate

3.184 GPixel/s

19.20 GTexel/s

Texture Rate

6.368 GTexel/s

-

FP16 (half)

-

384.0 GFLOPS

FP32 (float)

191.0 GFLOPS

-

FP64 (double)

-

Graphics Processor

RV730

GPU Name

RV635

RV730 PRO (215-0719056)

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

Board Design

48W

TDP

65W

200 W

Suggested PSU

250 W

2x DVI 1x S-Video

Outputs

2x DVI 1x S-Video

-

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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