ATI Radeon HD 4870 vs NVIDIA GeForce 8400 GS PCI

VS

ATI Radeon HD 4870

NVIDIA GeForce 8400 GS PCI

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

Main Differences

ATI Radeon HD 4870 's Advantages

Released 6 months late

Larger VRAM bandwidth (115.2GB/s vs 5.328GB/s)

792 additional rendering cores

NVIDIA GeForce 8400 GS PCI 's Advantages

Lower TDP (25W vs 150W)

Score

Benchmark

FP32 (float)

Radeon HD 4870 +5354%

1.2 TFLOPS

GeForce 8400 GS PCI

0.022 TFLOPS

Radeon HD 4870

VS

GeForce 8400 GS PCI

Graphics Card

Jun 2008

Release Date

Dec 2007

Radeon R700

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCI

Clock Speeds

-

900 MHz

Memory Clock

333 MHz

Memory

512MB

Memory Size

512MB

GDDR5

Memory Type

DDR2

256bit

Memory Bus

64bit

115.2GB/s

Bandwidth

5.328GB/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

16 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

2.268 GPixel/s

30.00 GTexel/s

Texture Rate

2.268 GTexel/s

-

1200 GFLOPS

FP32 (float)

22.40 GFLOPS

240.0 GFLOPS

FP64 (double)

-

Board Design

150W

TDP

25W

450 W

Suggested PSU

200 W

2x DVI 1x S-Video

Outputs

1x S-Video 1x DMS-59

2x 6-pin

Power Connectors

None

Graphics Processor

RV770

GPU Name

G98

RV770 XT (215-0669049)

GPU Variant

G98-400-U2

TeraScale

Architecture

Tesla

TSMC

Foundry

TSMC

55 nm

Process Size

65 nm

0.956 billion

Transistors

0.21 billion

256 mm²

Die Size

86 mm²

Graphics Features

10.1 (10_1)

DirectX

11.1 (10_0)

3.3

OpenGL

3.3

1.1

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

1.1

4.1

Shader Model

4.0

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