AMD Radeon 550X 640SP vs AMD Radeon HD 8490 OEM

VS

AMD Radeon 550X 640SP AMD Radeon HD 8490 OEM

We compared two Desktop platform GPUs: 4GB VRAM Radeon 550X 640SP and 1024MB VRAM Radeon HD 8490 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon 550X 640SP 's Advantages

Released 4 years and 9 months late

Boost Clock1071MHz

More VRAM (4GB vs 1GB)

Larger VRAM bandwidth (48.00GB/s vs 14.40GB/s)

480 additional rendering cores

AMD Radeon HD 8490 OEM 's Advantages

Lower TDP (35W vs 50W)

Score

Benchmark

FP32 (float)

Radeon 550X 640SP +389%

1.371 TFLOPS

Radeon HD 8490 OEM

0.28 TFLOPS

Radeon 550X 640SP

VS

Radeon HD 8490 OEM

Graphics Card

Apr 2018

Release Date

Jul 2013

Polaris

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

1019 MHz

Base Clock

-

1071 MHz

Boost Clock

-

1500 MHz

Memory Clock

900 MHz

Memory

4GB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

64bit

Memory Bus

64bit

48.00GB/s

Bandwidth

14.40GB/s

Render Config

-

SM Count

-

10

Compute Units

2

640

Shading Units

160

40

TMUs

8

16

ROPs

4

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

128 KB

Theoretical Performance

17.14 GPixel/s

Pixel Rate

3.500 GPixel/s

42.84 GTexel/s

Texture Rate

7.000 GTexel/s

1371 GFLOPS

FP16 (half)

-

1371 GFLOPS

FP32 (float)

280.0 GFLOPS

85.68 GFLOPS

FP64 (double)

-

Graphics Processor

Lexa

GPU Name

Caicos

Lexa PRO (215-0904018)

GPU Variant

Caicos XTX

GCN 4.0

Architecture

TeraScale 2

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

40 nm

2.2 billion

Transistors

0.37 billion

103 mm²

Die Size

67 mm²

Board Design

50W

TDP

35W

250 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x DisplayPort 1.1

None

Power Connectors

None

Graphics Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.1

OpenCL

1.2

Vulkan

N/A

-

CUDA

-

6.4

Shader Model

5.0

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