AMD Radeon R9 390X vs NVIDIA GeForce 8400 GS Rev. 3

VS

AMD Radeon R9 390X

NVIDIA GeForce 8400 GS Rev. 3

We compared two Desktop platform GPUs: 8GB VRAM Radeon R9 390X and 512MB VRAM GeForce 8400 GS Rev. 3 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 390X 's Advantages

Released 4 years and 11 months late

More VRAM (8GB vs 512GB)

Larger VRAM bandwidth (384.0GB/s vs 6.400GB/s)

2808 additional rendering cores

NVIDIA GeForce 8400 GS Rev. 3 's Advantages

Lower TDP (25W vs 275W)

Score

Benchmark

FP32 (float)

Radeon R9 390X +29470%

5.914 TFLOPS

GeForce 8400 GS Rev. 3

0.02 TFLOPS

Radeon R9 390X

VS

GeForce 8400 GS Rev. 3

Graphics Card

Jun 2015

Release Date

Jul 2010

Pirate Islands

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1500 MHz

Memory Clock

400 MHz

Memory

8GB

Memory Size

512MB

GDDR5

Memory Type

DDR2

512bit

Memory Bus

64bit

384.0GB/s

Bandwidth

6.400GB/s

Render Config

44

Compute Units

-

SM Count

1

2816

Shading Units

8

176

TMUs

4

64

ROPs

4

-

16 KB (per CU)

L1 Cache

-

1024 KB

L2 Cache

32 KB

-

Theoretical Performance

67.20 GPixel/s

Pixel Rate

2.080 GPixel/s

184.8 GTexel/s

Texture Rate

2.080 GTexel/s

-

5.914 TFLOPS

FP32 (float)

19.68 GFLOPS

739.2 GFLOPS

FP64 (double)

-

Board Design

275W

TDP

25W

600 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x VGA 1x S-Video

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Processor

Grenada

GPU Name

GT218

Grenada XT (215-0880004)

GPU Variant

8400GS-225-B1

GCN 2.0

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

6.2 billion

Transistors

0.26 billion

438 mm²

Die Size

57 mm²

Graphics Features

12 (12_0)

DirectX

11.1 (10_1)

4.6

OpenGL

3.3

2.0

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

1.2

6.3

Shader Model

4.1

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