ATI Radeon HD 4870 vs NVIDIA GeForce 8400 GS Rev. 3

VS

ATI Radeon HD 4870

NVIDIA GeForce 8400 GS Rev. 3

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 and 512MB VRAM GeForce 8400 GS Rev. 3 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4870 's Advantages

Larger VRAM bandwidth (115.2GB/s vs 6.400GB/s)

792 additional rendering cores

NVIDIA GeForce 8400 GS Rev. 3 's Advantages

Released 2 years and 1 months late

Lower TDP (25W vs 150W)

Score

Benchmark

FP32 (float)

Radeon HD 4870 +5900%

1.2 TFLOPS

GeForce 8400 GS Rev. 3

0.02 TFLOPS

Radeon HD 4870

VS

GeForce 8400 GS Rev. 3

Graphics Card

Jun 2008

Release Date

Jul 2010

Radeon R700

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

900 MHz

Memory Clock

400 MHz

Memory

512MB

Memory Size

512MB

GDDR5

Memory Type

DDR2

256bit

Memory Bus

64bit

115.2GB/s

Bandwidth

6.400GB/s

Render Config

10

Compute Units

-

SM Count

1

800

Shading Units

8

40

TMUs

4

16

ROPs

4

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

32 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

2.080 GPixel/s

30.00 GTexel/s

Texture Rate

2.080 GTexel/s

-

1200 GFLOPS

FP32 (float)

19.68 GFLOPS

240.0 GFLOPS

FP64 (double)

-

Board Design

150W

TDP

25W

450 W

Suggested PSU

200 W

2x DVI 1x S-Video

Outputs

1x DVI 1x VGA 1x S-Video

2x 6-pin

Power Connectors

None

Graphics Processor

RV770

GPU Name

GT218

RV770 XT (215-0669049)

GPU Variant

8400GS-225-B1

TeraScale

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.956 billion

Transistors

0.26 billion

256 mm²

Die Size

57 mm²

Graphics Features

10.1 (10_1)

DirectX

11.1 (10_1)

3.3

OpenGL

3.3

1.1

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

1.2

4.1

Shader Model

4.1

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