ATI Radeon HD 3850 X3 vs ATI Radeon HD 4580

VS

ATI Radeon HD 3850 X3

ATI Radeon HD 4580

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3850 X3 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 3850 X3 's Advantages

Larger VRAM bandwidth (54.40GB/s vs 22.18GB/s)

200 additional rendering cores

ATI Radeon HD 4580 's Advantages

Lower TDP (65W vs 145W)

Score

Benchmark

FP32 (float)

Radeon HD 3850 X3 +124%

0.428 TFLOPS

Radeon HD 4580

0.191 TFLOPS

Radeon HD 3850 X3

VS

Radeon HD 4580

Graphics Card

Unknown

Release Date

Nov 2011

Radeon R600

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

850 MHz

Memory Clock

693 MHz

Memory

512MB

Memory Size

512MB

GDDR3

Memory Type

GDDR3

256bit

Memory Bus

128bit

54.40GB/s

Bandwidth

22.18GB/s

Render Config

4

Compute Units

3

-

320

Shading Units

120

16

TMUs

8

16

ROPs

4

-

256 KB

L2 Cache

128 KB

-

Theoretical Performance

10.70 GPixel/s

Pixel Rate

3.184 GPixel/s

10.70 GTexel/s

Texture Rate

6.368 GTexel/s

-

428.2 GFLOPS

FP32 (float)

191.0 GFLOPS

-

Board Design

145W

TDP

65W

300 W

Suggested PSU

250 W

4x DVI

Outputs

2x DVI 1x S-Video

1x 8-pin

Power Connectors

None

Graphics Processor

RV670

GPU Name

RV635

RV670 PRO (215-0708003)

GPU Variant

RV635 PRO (215-0682008)

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.666 billion

Transistors

0.378 billion

192 mm²

Die Size

135 mm²

Graphics Features

10.1 (10_1)

DirectX

10.1 (10_1)

3.3 (full) 4.0 (partial)

OpenGL

3.3

N/A

OpenCL

N/A

Vulkan

N/A

-

4.1

Shader Model

4.1

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