AMD Radeon 550X 640SP vs AMD Radeon R9 285X

VS

AMD Radeon 550X 640SP AMD Radeon R9 285X

We compared two Desktop platform GPUs: 4GB VRAM Radeon 550X 640SP and 3GB VRAM Radeon R9 285X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon 550X 640SP 's Advantages

Boost Clock1071MHz

More VRAM (4GB vs 3GB)

Lower TDP (50W vs 200W)

AMD Radeon R9 285X 's Advantages

Larger VRAM bandwidth (264.0GB/s vs 48.00GB/s)

1408 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon 550X 640SP

1.371 TFLOPS

Radeon R9 285X +199%

4.104 TFLOPS

Radeon 550X 640SP

VS

Radeon R9 285X

Graphics Card

Apr 2018

Release Date

Unknown

Polaris

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1019 MHz

Base Clock

-

1071 MHz

Boost Clock

-

1500 MHz

Memory Clock

1375 MHz

Memory

4GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

384bit

48.00GB/s

Bandwidth

264.0GB/s

Render Config

-

SM Count

-

10

Compute Units

32

640

Shading Units

2048

40

TMUs

128

16

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

768 KB

Theoretical Performance

17.14 GPixel/s

Pixel Rate

32.06 GPixel/s

42.84 GTexel/s

Texture Rate

128.3 GTexel/s

1371 GFLOPS

FP16 (half)

-

1371 GFLOPS

FP32 (float)

4.104 TFLOPS

85.68 GFLOPS

FP64 (double)

-

Graphics Processor

Lexa

GPU Name

Tonga

Lexa PRO (215-0904018)

GPU Variant

Tonga XT (215-0851313)

GCN 4.0

Architecture

GCN 3.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

2.2 billion

Transistors

5 billion

103 mm²

Die Size

366 mm²

Board Design

50W

TDP

200W

250 W

Suggested PSU

550 W

1x DVI 1x HDMI 2.0b 1x DisplayPort 1.4a

Outputs

2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

None

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Features

12 (12_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1

OpenCL

2.0

1.2

Vulkan

1.2

-

CUDA

-

6.4

Shader Model

6.3

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