AMD Radeon HD 6850 X2 vs NVIDIA GeForce GTX 275

VS

AMD Radeon HD 6850 X2

NVIDIA GeForce GTX 275

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6850 X2 and 896MB VRAM GeForce GTX 275 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 2 years and 8 months late

More VRAM (2GB vs 896GB)

Larger VRAM bandwidth (134.4GB/s vs 127.0GB/s)

720 additional rendering cores

NVIDIA GeForce GTX 275 's Advantages

Lower TDP (219W vs 254W)

Score

Benchmark

FP32 (float)

Radeon HD 6850 X2 +127%

1.536 TFLOPS

GeForce GTX 275

0.674 TFLOPS

Radeon HD 6850 X2

VS

GeForce GTX 275

Graphics Card

Sep 2011

Release Date

Jan 2009

Northern Islands

Generation

GeForce 200

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1050 MHz

Memory Clock

1134 MHz

Memory

2GB

Memory Size

896MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

448bit

134.4GB/s

Bandwidth

127.0GB/s

Render Config

12

Compute Units

-

SM Count

30

960

Shading Units

240

48

TMUs

80

32

ROPs

28

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

224 KB

-

Theoretical Performance

25.60 GPixel/s

Pixel Rate

17.72 GPixel/s

38.40 GTexel/s

Texture Rate

50.64 GTexel/s

-

1.536 TFLOPS

FP32 (float)

673.9 GFLOPS

-

FP64 (double)

84.24 GFLOPS

Board Design

254W

TDP

219W

600 W

Suggested PSU

550 W

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

Outputs

2x DVI

2x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

Barts

GPU Name

GT200B

Barts PRO (215-0798006)

GPU Variant

G200-105-B3

TeraScale 2

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

1.7 billion

Transistors

1.4 billion

255 mm²

Die Size

470 mm²

Graphics Features

11.2 (11_0)

DirectX

11.1 (10_0)

4.4

OpenGL

3.3

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

1.3

5.0

Shader Model

4.0

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