AMD Radeon R9 270 1024SP vs NVIDIA GeForce 8400 GS

VS

AMD Radeon R9 270 1024SP

NVIDIA GeForce 8400 GS

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 270 1024SP 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 270 1024SP 's Advantages

Released 7 years and 11 months late

Boost Clock925MHz

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (153.6GB/s vs 6.400GB/s)

1008 additional rendering cores

NVIDIA GeForce 8400 GS 's Advantages

Lower TDP (40W vs 150W)

Score

Benchmark

FP32 (float)

Radeon R9 270 1024SP +6431%

1.894 TFLOPS

GeForce 8400 GS

0.029 TFLOPS

Radeon R9 270 1024SP

VS

GeForce 8400 GS

Graphics Card

Mar 2015

Release Date

Apr 2007

Volcanic Islands

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

900 MHz

Base Clock

-

925 MHz

Boost Clock

-

1200 MHz

Memory Clock

400 MHz

Memory

2GB

Memory Size

256MB

GDDR5

Memory Type

DDR2

256bit

Memory Bus

64bit

153.6GB/s

Bandwidth

6.400GB/s

Render Config

16

Compute Units

-

SM Count

2

1024

Shading Units

16

64

TMUs

8

32

ROPs

4

-

16 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

16 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

1.836 GPixel/s

59.20 GTexel/s

Texture Rate

3.672 GTexel/s

-

1.894 TFLOPS

FP32 (float)

29.38 GFLOPS

118.4 GFLOPS

FP64 (double)

-

Board Design

150W

TDP

40W

450 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

Power Connectors

None

Graphics Processor

Pitcairn

GPU Name

G86

Pitcairn PRO (215-0828062)

GPU Variant

G86-213-A2

GCN 1.0

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

80 nm

2.8 billion

Transistors

0.21 billion

212 mm²

Die Size

127 mm²

Graphics Features

12 (11_1)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

1.1

5.1

Shader Model

4.0

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