NVIDIA GeForce 9400 GT PCI vs ATI Radeon HD 4855

VS

NVIDIA GeForce 9400 GT PCI

ATI Radeon HD 4855

We compared two Desktop platform GPUs: 256MB VRAM GeForce 9400 GT PCI and 512MB VRAM Radeon HD 4855 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 9400 GT PCI 's Advantages

Lower TDP (50W vs 110W)

ATI Radeon HD 4855 's Advantages

Released 1 years and 5 months late

More VRAM (512GB vs 256GB)

Larger VRAM bandwidth (115.2GB/s vs 12.80GB/s)

624 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 9400 GT PCI

0.045 TFLOPS

Radeon HD 4855 +1535%

0.736 TFLOPS

GeForce 9400 GT PCI

VS

Radeon HD 4855

Graphics Card

Aug 2008

Release Date

Jan 2010

GeForce 9

Generation

Radeon R700

Desktop

Type

Desktop

PCI

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

400 MHz

Memory Clock

900 MHz

Memory

256MB

Memory Size

512MB

DDR2

Memory Type

GDDR5

128bit

Memory Bus

256bit

12.80GB/s

Bandwidth

115.2GB/s

Render Config

-

Compute Units

8

2

SM Count

-

16

Shading Units

640

8

TMUs

32

4

ROPs

16

-

L1 Cache

16 KB (per CU)

32 KB

L2 Cache

256 KB

-

Theoretical Performance

2.200 GPixel/s

Pixel Rate

9.200 GPixel/s

4.400 GTexel/s

Texture Rate

18.40 GTexel/s

-

44.80 GFLOPS

FP32 (float)

736.0 GFLOPS

-

FP64 (double)

147.2 GFLOPS

Board Design

50W

TDP

110W

250 W

Suggested PSU

300 W

1x DVI 1x VGA 1x S-Video

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

None

Power Connectors

1x 6-pin

Graphics Processor

G96C

GPU Name

RV770

-

GPU Variant

RV770 PRO (215-0669065)

Tesla

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.314 billion

Transistors

0.956 billion

121 mm²

Die Size

256 mm²

Graphics Features

11.1 (10_0)

DirectX

10.1 (10_1)

3.3

OpenGL

3.3

1.1

OpenCL

1.1

N/A

Vulkan

N/A

1.1

CUDA

-

4.0

Shader Model

4.1

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