ATI Radeon HD 3850 X3 vs ATI Radeon HD 4750

VS

ATI Radeon HD 3850 X3

ATI Radeon HD 4750

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3850 X3 and 512MB VRAM Radeon HD 4750 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 51.20GB/s)

ATI Radeon HD 4750 's Advantages

320 additional rendering cores

Lower TDP (100W vs 145W)

Score

Benchmark

FP32 (float)

Radeon HD 3850 X3

0.428 TFLOPS

Radeon HD 4750 +118%

0.934 TFLOPS

Radeon HD 3850 X3

VS

Radeon HD 4750

Graphics Card

Unknown

Release Date

Sep 2009

Radeon R600

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

850 MHz

Memory Clock

800 MHz

Memory

512MB

Memory Size

512MB

GDDR3

Memory Type

GDDR5

256bit

Memory Bus

128bit

54.40GB/s

Bandwidth

51.20GB/s

Render Config

4

Compute Units

8

-

320

Shading Units

640

16

TMUs

32

16

ROPs

16

-

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

128 KB

-

Theoretical Performance

10.70 GPixel/s

Pixel Rate

11.68 GPixel/s

10.70 GTexel/s

Texture Rate

23.36 GTexel/s

-

428.2 GFLOPS

FP32 (float)

934.4 GFLOPS

-

FP64 (double)

186.9 GFLOPS

Board Design

145W

TDP

100W

300 W

Suggested PSU

300 W

4x DVI

Outputs

2x DVI 1x S-Video

1x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

RV670

GPU Name

RV740

RV670 PRO (215-0708003)

GPU Variant

RV740 PRO

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.666 billion

Transistors

0.826 billion

192 mm²

Die Size

137 mm²

Graphics Features

10.1 (10_1)

DirectX

10.1 (10_1)

3.3 (full) 4.0 (partial)

OpenGL

3.3

N/A

OpenCL

1.1

N/A

Vulkan

N/A

-

4.1

Shader Model

4.1

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