AMD Radeon R9 280X2 vs NVIDIA GeForce 8400 GS PCI Rev. 2

VS

AMD Radeon R9 280X2

NVIDIA GeForce 8400 GS PCI Rev. 2

We compared two Desktop platform GPUs: 3GB VRAM Radeon R9 280X2 and 512MB VRAM GeForce 8400 GS PCI Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 280X2 's Advantages

Boost Clock1000MHz

More VRAM (3GB vs 512GB)

Larger VRAM bandwidth (288.0GB/s vs 8.000GB/s)

2032 additional rendering cores

NVIDIA GeForce 8400 GS PCI Rev. 2 's Advantages

Lower TDP (40W vs 375W)

Score

Benchmark

FP32 (float)

Radeon R9 280X2 +10402%

4.096 TFLOPS

GeForce 8400 GS PCI Rev. 2

0.039 TFLOPS

Radeon R9 280X2

VS

GeForce 8400 GS PCI Rev. 2

Graphics Card

Unknown

Release Date

Apr 2007

Volcanic Islands

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCI

Clock Speeds

950 MHz

Base Clock

-

1000 MHz

Boost Clock

-

1500 MHz

Memory Clock

500 MHz

Memory

3GB

Memory Size

512MB

GDDR5

Memory Type

DDR3

384bit

Memory Bus

64bit

288.0GB/s

Bandwidth

8.000GB/s

Render Config

32

Compute Units

-

SM Count

2

2048

Shading Units

16

128

TMUs

8

32

ROPs

4

-

16 KB (per CU)

L1 Cache

-

768 KB

L2 Cache

32 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

2.080 GPixel/s

128.0 GTexel/s

Texture Rate

4.160 GTexel/s

-

4.096 TFLOPS

FP32 (float)

39.36 GFLOPS

1024 GFLOPS

FP64 (double)

-

Board Design

375W

TDP

40W

750 W

Suggested PSU

200 W

6x mini-DisplayPort 1.2

Outputs

1x DVI 1x HDMI 1x VGA

3x 8-pin

Power Connectors

None

Graphics Processor

Tahiti

GPU Name

GT218

Tahiti XTL (215-0821065)

GPU Variant

-

GCN 1.0

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

4.313 billion

Transistors

0.26 billion

352 mm²

Die Size

57 mm²

Graphics Features

12 (11_1)

DirectX

11.1 (10_1)

4.6

OpenGL

3.3

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

1.2

5.1

Shader Model

4.1

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