ATI Radeon HD 3850 X3 vs AMD Radeon RX 455 OEM

VS

ATI Radeon HD 3850 X3

AMD Radeon RX 455 OEM

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3850 X3 and 2GB VRAM Radeon RX 455 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 455 OEM 's Advantages

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (104.0GB/s vs 54.40GB/s)

448 additional rendering cores

Lower TDP (100W vs 145W)

Score

Benchmark

FP32 (float)

Radeon HD 3850 X3

0.428 TFLOPS

Radeon RX 455 OEM +276%

1.613 TFLOPS

Radeon HD 3850 X3

VS

Radeon RX 455 OEM

Graphics Card

Unknown

Release Date

Jun 2016

Radeon R600

Generation

Arctic Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

850 MHz

Memory Clock

1625 MHz

Memory

512MB

Memory Size

2GB

GDDR3

Memory Type

GDDR5

256bit

Memory Bus

128bit

54.40GB/s

Bandwidth

104.0GB/s

Render Config

4

Compute Units

12

-

320

Shading Units

768

16

TMUs

48

16

ROPs

16

-

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

10.70 GPixel/s

Pixel Rate

16.80 GPixel/s

10.70 GTexel/s

Texture Rate

50.40 GTexel/s

-

428.2 GFLOPS

FP32 (float)

1.613 TFLOPS

-

FP64 (double)

100.8 GFLOPS

Board Design

145W

TDP

100W

300 W

Suggested PSU

300 W

4x DVI

Outputs

1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

1x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

RV670

GPU Name

Tobago

RV670 PRO (215-0708003)

GPU Variant

Tobago PRO (215-0875010)

TeraScale

Architecture

GCN 2.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.666 billion

Transistors

2.08 billion

192 mm²

Die Size

160 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (12_0)

3.3 (full) 4.0 (partial)

OpenGL

4.6

N/A

OpenCL

2.0

N/A

Vulkan

1.2

-

4.1

Shader Model

6.3

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