NVIDIA GeForce 8400 vs ATI Radeon HD 4830

VS

NVIDIA GeForce 8400

ATI Radeon HD 4830

We compared two Desktop platform GPUs: 256MB VRAM GeForce 8400 and 512MB VRAM Radeon HD 4830 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 8400 's Advantages

Lower TDP (25W vs 95W)

ATI Radeon HD 4830 's Advantages

Released 10 months late

More VRAM (512GB vs 256GB)

Larger VRAM bandwidth (57.60GB/s vs 8.000GB/s)

632 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 8400

0.021 TFLOPS

Radeon HD 4830 +3404%

0.736 TFLOPS

GeForce 8400

VS

Radeon HD 4830

Graphics Card

Dec 2007

Release Date

Oct 2008

GeForce 8

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

500 MHz

Memory Clock

900 MHz

Memory

256MB

Memory Size

512MB

DDR2

Memory Type

GDDR3

64bit

Memory Bus

256bit

8.000GB/s

Bandwidth

57.60GB/s

Render Config

-

Compute Units

8

1

SM Count

-

8

Shading Units

640

4

TMUs

32

4

ROPs

16

-

L1 Cache

16 KB (per CU)

16 KB

L2 Cache

256 KB

-

Theoretical Performance

2.160 GPixel/s

Pixel Rate

9.200 GPixel/s

2.160 GTexel/s

Texture Rate

18.40 GTexel/s

-

20.80 GFLOPS

FP32 (float)

736.0 GFLOPS

-

FP64 (double)

147.2 GFLOPS

Board Design

25W

TDP

95W

200 W

Suggested PSU

250 W

1x DVI 1x VGA 1x S-Video

Outputs

2x DVI 1x S-Video

None

Power Connectors

1x 6-pin

Graphics Processor

G98

GPU Name

RV770

-

GPU Variant

RV770 LE (215-0669075)

Tesla

Architecture

TeraScale

TSMC

Foundry

TSMC

65 nm

Process Size

55 nm

0.21 billion

Transistors

0.956 billion

86 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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