ATI Radeon HD 4870 X2 vs NVIDIA GeForce 405 OEM

VS

ATI Radeon HD 4870 X2

NVIDIA GeForce 405 OEM

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 4870 X2 and 512MB VRAM GeForce 405 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4870 X2 's Advantages

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (115.2GB/s vs 12.64GB/s)

784 additional rendering cores

NVIDIA GeForce 405 OEM 's Advantages

Released 2 years and 1 months late

Lower TDP (25W vs 286W)

Score

Benchmark

FP32 (float)

Radeon HD 4870 X2 +2566%

1.2 TFLOPS

GeForce 405 OEM

0.045 TFLOPS

Radeon HD 4870 X2

VS

GeForce 405 OEM

Graphics Card

Aug 2008

Release Date

Sep 2010

Radeon R700

Generation

GeForce 400

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

900 MHz

Memory Clock

790 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

64bit

115.2GB/s

Bandwidth

12.64GB/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

32 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

2.356 GPixel/s

30.00 GTexel/s

Texture Rate

4.712 GTexel/s

-

1200 GFLOPS

FP32 (float)

44.86 GFLOPS

240.0 GFLOPS

FP64 (double)

-

Board Design

286W

TDP

25W

600 W

Suggested PSU

200 W

2x DVI 1x S-Video

Outputs

1x DVI 1x HDMI 1x VGA

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Processor

R700

GPU Name

GT218

R700 XT (215-0669045)

GPU Variant

GT218-300-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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