AMD Radeon HD 6850 X2 vs NVIDIA GeForce 405 OEM

VS

AMD Radeon HD 6850 X2

NVIDIA GeForce 405 OEM

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6850 X2 and 512MB VRAM GeForce 405 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6850 X2 's Advantages

Released 1 years late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (134.4GB/s vs 12.64GB/s)

944 additional rendering cores

NVIDIA GeForce 405 OEM 's Advantages

Lower TDP (25W vs 254W)

Score

Benchmark

FP32 (float)

Radeon HD 6850 X2 +3313%

1.536 TFLOPS

GeForce 405 OEM

0.045 TFLOPS

Radeon HD 6850 X2

VS

GeForce 405 OEM

Graphics Card

Sep 2011

Release Date

Sep 2010

Northern Islands

Generation

GeForce 400

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1050 MHz

Memory Clock

790 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

64bit

134.4GB/s

Bandwidth

12.64GB/s

Render Config

12

Compute Units

-

SM Count

2

960

Shading Units

16

48

TMUs

8

32

ROPs

4

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

32 KB

-

Theoretical Performance

25.60 GPixel/s

Pixel Rate

2.356 GPixel/s

38.40 GTexel/s

Texture Rate

4.712 GTexel/s

-

1.536 TFLOPS

FP32 (float)

44.86 GFLOPS

-

Board Design

254W

TDP

25W

600 W

Suggested PSU

200 W

2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1

Outputs

1x DVI 1x HDMI 1x VGA

2x 8-pin

Power Connectors

None

Graphics Processor

Barts

GPU Name

GT218

Barts PRO (215-0798006)

GPU Variant

GT218-300-B1

TeraScale 2

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.7 billion

Transistors

0.26 billion

255 mm²

Die Size

57 mm²

Graphics Features

11.2 (11_0)

DirectX

11.1 (10_1)

4.4

OpenGL

3.3

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

1.2

5.0

Shader Model

4.1

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