NVIDIA GeForce 8400 vs ATI Radeon HD 4870 Mac Edition

VS

NVIDIA GeForce 8400

ATI Radeon HD 4870 Mac Edition

We compared two Desktop platform GPUs: 256MB VRAM GeForce 8400 and 512MB VRAM Radeon HD 4870 Mac Edition 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 150W)

ATI Radeon HD 4870 Mac Edition 's Advantages

Released 1 years and 1 months late

More VRAM (512GB vs 256GB)

Larger VRAM bandwidth (108.8GB/s vs 8.000GB/s)

792 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 8400

0.021 TFLOPS

Radeon HD 4870 Mac Edition +5614%

1.2 TFLOPS

GeForce 8400

VS

Radeon HD 4870 Mac Edition

Graphics Card

Dec 2007

Release Date

Jan 2009

GeForce 8

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

500 MHz

Memory Clock

850 MHz

Memory

256MB

Memory Size

512MB

DDR2

Memory Type

GDDR5

64bit

Memory Bus

256bit

8.000GB/s

Bandwidth

108.8GB/s

Render Config

-

Compute Units

10

1

SM Count

-

8

Shading Units

800

4

TMUs

40

4

ROPs

16

-

L1 Cache

16 KB (per CU)

16 KB

L2 Cache

256 KB

-

Theoretical Performance

2.160 GPixel/s

Pixel Rate

12.00 GPixel/s

2.160 GTexel/s

Texture Rate

30.00 GTexel/s

-

20.80 GFLOPS

FP32 (float)

1200 GFLOPS

-

FP64 (double)

240.0 GFLOPS

Board Design

25W

TDP

150W

200 W

Suggested PSU

450 W

1x DVI 1x VGA 1x S-Video

Outputs

1x DVI 1x mini-DisplayPort 1.0

None

Power Connectors

2x 6-pin

Graphics Processor

G98

GPU Name

RV770

-

GPU Variant

RV770 XT Mac (215-0669080)

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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