AMD Radeon R9 390 vs NVIDIA GeForce 8400 GS

VS

AMD Radeon R9 390

NVIDIA GeForce 8400 GS

We compared two Desktop platform GPUs: 8GB VRAM Radeon R9 390 and 256MB VRAM GeForce 8400 GS to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 390 's Advantages

Released 8 years and 2 months late

More VRAM (8GB vs 256GB)

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

2544 additional rendering cores

NVIDIA GeForce 8400 GS 's Advantages

Lower TDP (40W vs 275W)

Score

Benchmark

FP32 (float)

Radeon R9 390 +17555%

5.12 TFLOPS

GeForce 8400 GS

0.029 TFLOPS

Radeon R9 390

VS

GeForce 8400 GS

Graphics Card

Jun 2015

Release Date

Apr 2007

Pirate Islands

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1500 MHz

Memory Clock

400 MHz

Memory

8GB

Memory Size

256MB

GDDR5

Memory Type

DDR2

512bit

Memory Bus

64bit

384.0GB/s

Bandwidth

6.400GB/s

Render Config

40

Compute Units

-

SM Count

2

2560

Shading Units

16

160

TMUs

8

64

ROPs

4

-

16 KB (per CU)

L1 Cache

-

1024 KB

L2 Cache

16 KB

-

Theoretical Performance

64.00 GPixel/s

Pixel Rate

1.836 GPixel/s

160.0 GTexel/s

Texture Rate

3.672 GTexel/s

-

5.120 TFLOPS

FP32 (float)

29.38 GFLOPS

640.0 GFLOPS

FP64 (double)

-

Board Design

275W

TDP

40W

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

G86

Grenada PRO (215-0880030)

GPU Variant

G86-213-A2

GCN 2.0

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

80 nm

6.2 billion

Transistors

0.21 billion

438 mm²

Die Size

127 mm²

Graphics Features

12 (12_0)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

2.0

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

1.1

6.3

Shader Model

4.0

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