ATI Radeon HD 4890 vs AMD Radeon HD 6390

VS

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 4890 and 1024MB VRAM Radeon HD 6390 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4890 's Advantages

Larger VRAM bandwidth (124.8GB/s vs 16.00GB/s)

480 additional rendering cores

AMD Radeon HD 6390 's Advantages

Released 2 years and 3 months late

Lower TDP (39W vs 190W)

Score

Benchmark

FP32 (float)

Radeon HD 4890 +286%

1.36 TFLOPS

Radeon HD 6390

0.352 TFLOPS

Radeon HD 4890

VS

Radeon HD 6390

Graphics Card

Apr 2009

Release Date

Jul 2011

Radeon R700

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

975 MHz

Memory Clock

500 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

DDR2

256bit

Memory Bus

128bit

124.8GB/s

Bandwidth

16.00GB/s

Render Config

-

SM Count

-

10

Compute Units

4

800

Shading Units

320

40

TMUs

16

ROPs

8

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

256 KB

Theoretical Performance

13.60 GPixel/s

Pixel Rate

4.400 GPixel/s

34.00 GTexel/s

Texture Rate

8.800 GTexel/s

-

FP16 (half)

-

1360 GFLOPS

FP32 (float)

352.0 GFLOPS

272.0 GFLOPS

FP64 (double)

-

Graphics Processor

RV790

GPU Name

Redwood

RV790 XT (215-0758016)

GPU Variant

Redwood LE

TeraScale

Architecture

TeraScale 2

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.959 billion

Transistors

0.627 billion

282 mm²

Die Size

104 mm²

Board Design

190W

TDP

39W

450 W

Suggested PSU

200 W

2x DVI 1x S-Video

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

2x 6-pin

Power Connectors

None

Graphics Features

10.1 (10_1)

DirectX

11.2 (11_0)

3.3

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

-

CUDA

-

4.1

Shader Model

5.0

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