ATI Radeon HD 4850 vs NVIDIA GeForce 8400 GS

VS

ATI Radeon HD 4850

NVIDIA GeForce 8400 GS

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4850 and 256MB VRAM GeForce 8400 GS to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4850 's Advantages

Released 1 years and 2 months late

More VRAM (512GB vs 256GB)

Larger VRAM bandwidth (63.55GB/s vs 6.400GB/s)

784 additional rendering cores

NVIDIA GeForce 8400 GS 's Advantages

Lower TDP (40W vs 110W)

Score

Benchmark

FP32 (float)

Radeon HD 4850 +3348%

1 TFLOPS

GeForce 8400 GS

0.029 TFLOPS

Radeon HD 4850

VS

GeForce 8400 GS

Graphics Card

Jun 2008

Release Date

Apr 2007

Radeon R700

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

993 MHz

Memory Clock

400 MHz

Memory

512MB

Memory Size

256MB

GDDR3

Memory Type

DDR2

256bit

Memory Bus

64bit

63.55GB/s

Bandwidth

6.400GB/s

Render Config

10

Compute Units

-

SM Count

2

800

Shading Units

16

40

TMUs

8

16

ROPs

4

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

16 KB

-

Theoretical Performance

10.00 GPixel/s

Pixel Rate

1.836 GPixel/s

25.00 GTexel/s

Texture Rate

3.672 GTexel/s

-

1000 GFLOPS

FP32 (float)

29.38 GFLOPS

200.0 GFLOPS

FP64 (double)

-

Board Design

110W

TDP

40W

300 W

Suggested PSU

200 W

2x DVI 1x S-Video

Outputs

1x DVI 1x VGA 1x S-Video

1x 6-pin

Power Connectors

None

Graphics Processor

RV770

GPU Name

G86

RV770 PRO (215-0669065)

GPU Variant

G86-213-A2

TeraScale

Architecture

Tesla

TSMC

Foundry

TSMC

55 nm

Process Size

80 nm

0.956 billion

Transistors

0.21 billion

256 mm²

Die Size

127 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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