AMD Radeon HD 6850 X2 vs NVIDIA GeForce GTS 450

VS

AMD Radeon HD 6850 X2

NVIDIA GeForce GTS 450

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6850 X2 and 1024MB VRAM GeForce GTS 450 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 1024GB)

Larger VRAM bandwidth (134.4GB/s vs 57.73GB/s)

768 additional rendering cores

NVIDIA GeForce GTS 450 's Advantages

Lower TDP (106W vs 254W)

Score

Benchmark

FP32 (float)

Radeon HD 6850 X2 +155%

1.536 TFLOPS

GeForce GTS 450

0.601 TFLOPS

Radeon HD 6850 X2

VS

GeForce GTS 450

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

902 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

134.4GB/s

Bandwidth

57.73GB/s

Render Config

12

Compute Units

-

SM Count

4

960

Shading Units

192

48

TMUs

32

ROPs

16

-

8 KB (per CU)

L1 Cache

64 KB (per SM)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

25.60 GPixel/s

Pixel Rate

6.264 GPixel/s

38.40 GTexel/s

Texture Rate

25.06 GTexel/s

-

1.536 TFLOPS

FP32 (float)

601.3 GFLOPS

-

FP64 (double)

50.11 GFLOPS

Board Design

254W

TDP

106W

600 W

Suggested PSU

300 W

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

Outputs

2x DVI 1x mini-HDMI 1.3a

2x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Barts

GPU Name

GF106

Barts PRO (215-0798006)

GPU Variant

GF106-250-KA-A1

TeraScale 2

Architecture

Fermi

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.7 billion

Transistors

1.17 billion

255 mm²

Die Size

238 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

2.1

5.0

Shader Model

5.1

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