NVIDIA GeForce GTX 275 vs AMD Radeon HD 6870 X2

VS

NVIDIA GeForce GTX 275

AMD Radeon HD 6870 X2

We compared two Desktop platform GPUs: 896MB VRAM GeForce GTX 275 and 1024MB VRAM Radeon HD 6870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 275 's Advantages

Lower TDP (219W vs 300W)

AMD Radeon HD 6870 X2 's Advantages

Released 2 years and 6 months late

More VRAM (1024GB vs 896GB)

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

880 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 275

0.674 TFLOPS

Radeon HD 6870 X2 +199%

2.016 TFLOPS

GeForce GTX 275

VS

Radeon HD 6870 X2

Graphics Card

Jan 2009

Release Date

Jul 2011

GeForce 200

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1134 MHz

Memory Clock

1050 MHz

Memory

896MB

Memory Size

1024MB

GDDR3

Memory Type

GDDR5

448bit

Memory Bus

256bit

127.0GB/s

Bandwidth

134.4GB/s

Render Config

-

Compute Units

14

30

SM Count

-

240

Shading Units

1120

80

TMUs

56

28

ROPs

32

-

L1 Cache

8 KB (per CU)

224 KB

L2 Cache

512 KB

-

Theoretical Performance

17.72 GPixel/s

Pixel Rate

28.80 GPixel/s

50.64 GTexel/s

Texture Rate

50.40 GTexel/s

-

673.9 GFLOPS

FP32 (float)

2.016 TFLOPS

84.24 GFLOPS

FP64 (double)

-

Board Design

219W

TDP

300W

550 W

Suggested PSU

700 W

2x DVI

Outputs

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

2x 6-pin

Power Connectors

-

Graphics Processor

GT200B

GPU Name

Barts

G200-105-B3

GPU Variant

Barts XT (215-0798000)

Tesla 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

1.4 billion

Transistors

1.7 billion

470 mm²

Die Size

255 mm²

Graphics Features

11.1 (10_0)

DirectX

11.2 (11_0)

3.3

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

1.3

CUDA

-

4.0

Shader Model

5.0

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