AMD Radeon R9 255 OEM vs NVIDIA GeForce 8400 SE

VS

AMD Radeon R9 255 OEM

NVIDIA GeForce 8400 SE

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 255 OEM 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 R9 255 OEM 's Advantages

Released 5 years and 4 months late

Boost Clock930MHz

More VRAM (2GB vs 128GB)

Larger VRAM bandwidth (73.60GB/s vs 6.400GB/s)

496 additional rendering cores

NVIDIA GeForce 8400 SE 's Advantages

Lower TDP (50W vs 65W)

Score

Benchmark

FP32 (float)

Radeon R9 255 OEM +3182%

0.952 TFLOPS

GeForce 8400 SE

0.029 TFLOPS

Radeon R9 255 OEM

VS

GeForce 8400 SE

Graphics Card

Dec 2013

Release Date

Aug 2008

Volcanic Islands

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

900 MHz

Base Clock

-

930 MHz

Boost Clock

-

1150 MHz

Memory Clock

400 MHz

Memory

2GB

Memory Size

128MB

GDDR5

Memory Type

DDR2

128bit

Memory Bus

64bit

73.60GB/s

Bandwidth

6.400GB/s

Render Config

8

Compute Units

-

SM Count

2

512

Shading Units

16

32

TMUs

8

16

ROPs

4

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

16 KB

-

Theoretical Performance

14.88 GPixel/s

Pixel Rate

1.836 GPixel/s

29.76 GTexel/s

Texture Rate

3.672 GTexel/s

-

952.3 GFLOPS

FP32 (float)

29.38 GFLOPS

59.52 GFLOPS

FP64 (double)

-

Board Design

65W

TDP

50W

250 W

Suggested PSU

250 W

No outputs

Outputs

1x DVI 1x VGA 1x S-Video

1x 6-pin

Power Connectors

None

Graphics Processor

Cape Verde

GPU Name

G86S

Cape Verde PRX

GPU Variant

-

GCN 1.0

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

80 nm

1.5 billion

Transistors

0.21 billion

123 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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