AMD Radeon HD 6850 X2 vs NVIDIA GeForce GTX 580

VS

AMD Radeon HD 6850 X2

NVIDIA GeForce GTX 580

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6850 X2 and 1536MB VRAM GeForce GTX 580 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 10 months late

More VRAM (2GB vs 1536GB)

448 additional rendering cores

NVIDIA GeForce GTX 580 's Advantages

Larger VRAM bandwidth (192.4GB/s vs 134.4GB/s)

Lower TDP (244W vs 254W)

Score

Benchmark

FP32 (float)

Radeon HD 6850 X2

1.536 TFLOPS

GeForce GTX 580 +2%

1.581 TFLOPS

Radeon HD 6850 X2

VS

GeForce GTX 580

Graphics Card

Sep 2011

Release Date

Nov 2010

Northern Islands

Generation

GeForce 500

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1050 MHz

Memory Clock

1002 MHz

Memory

2GB

Memory Size

1536MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

384bit

134.4GB/s

Bandwidth

192.4GB/s

Render Config

12

Compute Units

-

SM Count

16

960

Shading Units

512

48

TMUs

64

32

ROPs

48

-

8 KB (per CU)

L1 Cache

64 KB (per SM)

512 KB

L2 Cache

768 KB

-

Theoretical Performance

25.60 GPixel/s

Pixel Rate

24.70 GPixel/s

38.40 GTexel/s

Texture Rate

49.41 GTexel/s

-

1.536 TFLOPS

FP32 (float)

1.581 TFLOPS

-

FP64 (double)

197.6 GFLOPS

Board Design

254W

TDP

244W

600 W

Suggested PSU

550 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 + 1x 8-pin

Graphics Processor

Barts

GPU Name

GF110

Barts PRO (215-0798006)

GPU Variant

GF110-375-A1

TeraScale 2

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.7 billion

Transistors

3 billion

255 mm²

Die Size

520 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

2.0

5.0

Shader Model

5.1

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