AMD Radeon 550X 640SP vs NVIDIA GeForce 8400 SE

VS

AMD Radeon 550X 640SP

NVIDIA GeForce 8400 SE

We compared two Desktop platform GPUs: 4GB VRAM Radeon 550X 640SP and 128MB VRAM GeForce 8400 SE to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon 550X 640SP 's Advantages

Released 9 years and 8 months late

Boost Clock1071MHz

More VRAM (4GB vs 128GB)

Larger VRAM bandwidth (48.00GB/s vs 6.400GB/s)

624 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon 550X 640SP +4627%

1.371 TFLOPS

GeForce 8400 SE

0.029 TFLOPS

Radeon 550X 640SP

VS

GeForce 8400 SE

Graphics Card

Apr 2018

Release Date

Aug 2008

Polaris

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 1.0 x16

Clock Speeds

1019 MHz

Base Clock

-

1071 MHz

Boost Clock

-

1500 MHz

Memory Clock

400 MHz

Memory

4GB

Memory Size

128MB

GDDR5

Memory Type

DDR2

64bit

Memory Bus

64bit

48.00GB/s

Bandwidth

6.400GB/s

Render Config

10

Compute Units

-

SM Count

2

640

Shading Units

16

40

TMUs

8

16

ROPs

4

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

16 KB

-

Theoretical Performance

17.14 GPixel/s

Pixel Rate

1.836 GPixel/s

42.84 GTexel/s

Texture Rate

3.672 GTexel/s

1371 GFLOPS

FP16 (half)

-

1371 GFLOPS

FP32 (float)

29.38 GFLOPS

85.68 GFLOPS

FP64 (double)

-

Board Design

50W

TDP

50W

250 W

Suggested PSU

250 W

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

Outputs

1x DVI 1x VGA 1x S-Video

None

Power Connectors

None

Graphics Processor

Lexa

GPU Name

G86S

Lexa PRO (215-0904018)

GPU Variant

-

GCN 4.0

Architecture

Tesla

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

80 nm

2.2 billion

Transistors

0.21 billion

103 mm²

Die Size

127 mm²

Graphics Features

12 (12_0)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

2.1

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

1.1

6.4

Shader Model

4.0

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