AMD Radeon HD 6390 vs ATI Radeon HD 4750

VS

AMD Radeon HD 6390

ATI Radeon HD 4750

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6390 and 512MB VRAM Radeon HD 4750 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6390 's Advantages

Released 1 years and 10 months late

More VRAM (1024GB vs 512GB)

Lower TDP (39W vs 100W)

ATI Radeon HD 4750 's Advantages

Larger VRAM bandwidth (51.20GB/s vs 16.00GB/s)

320 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6390

0.352 TFLOPS

Radeon HD 4750 +165%

0.934 TFLOPS

Radeon HD 6390

VS

Radeon HD 4750

Graphics Card

Jul 2011

Release Date

Sep 2009

Northern Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

500 MHz

Memory Clock

800 MHz

Memory

1024MB

Memory Size

512MB

DDR2

Memory Type

GDDR5

128bit

Memory Bus

128bit

16.00GB/s

Bandwidth

51.20GB/s

Render Config

4

Compute Units

8

-

320

Shading Units

640

16

TMUs

32

8

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

128 KB

-

Theoretical Performance

4.400 GPixel/s

Pixel Rate

11.68 GPixel/s

8.800 GTexel/s

Texture Rate

23.36 GTexel/s

-

352.0 GFLOPS

FP32 (float)

934.4 GFLOPS

-

FP64 (double)

186.9 GFLOPS

Board Design

39W

TDP

100W

200 W

Suggested PSU

300 W

1x DVI 1x HDMI 1.3a 1x VGA

Outputs

2x DVI 1x S-Video

None

Power Connectors

1x 6-pin

Graphics Processor

Redwood

GPU Name

RV740

Redwood LE

GPU Variant

RV740 PRO

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.627 billion

Transistors

0.826 billion

104 mm²

Die Size

137 mm²

Graphics Features

11.2 (11_0)

DirectX

10.1 (10_1)

4.4

OpenGL

3.3

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

5.0

Shader Model

4.1

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