NVIDIA GeForce GTX 275 PhysX Edition vs ATI Radeon HD 3870 Mac Edition

VS

NVIDIA GeForce GTX 275 PhysX Edition

ATI Radeon HD 3870 Mac Edition

We compared two Desktop platform GPUs: 896MB VRAM GeForce GTX 275 PhysX Edition and 512MB VRAM Radeon HD 3870 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 275 PhysX Edition 's Advantages

Released 1 years and 8 months late

More VRAM (896GB vs 512GB)

Larger VRAM bandwidth (127.0GB/s vs 72.06GB/s)

ATI Radeon HD 3870 Mac Edition 's Advantages

80 additional rendering cores

Lower TDP (106W vs 219W)

Score

Benchmark

FP32 (float)

GeForce GTX 275 PhysX Edition +25%

0.622 TFLOPS

Radeon HD 3870 Mac Edition

0.497 TFLOPS

GeForce GTX 275 PhysX Edition

VS

Radeon HD 3870 Mac Edition

Graphics Card

Feb 2010

Release Date

Jun 2008

GeForce 200

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1134 MHz

Memory Clock

1126 MHz

Memory

896MB

Memory Size

512MB

GDDR3

Memory Type

GDDR4

448bit

Memory Bus

256bit

127.0GB/s

Bandwidth

72.06GB/s

Render Config

-

Compute Units

4

30

SM Count

-

240

Shading Units

320

80

TMUs

16

28

ROPs

16

-

224 KB

L2 Cache

256 KB

-

Theoretical Performance

17.72 GPixel/s

Pixel Rate

12.43 GPixel/s

50.64 GTexel/s

Texture Rate

12.43 GTexel/s

-

622.1 GFLOPS

FP32 (float)

497.3 GFLOPS

77.76 GFLOPS

FP64 (double)

99.46 GFLOPS

Board Design

219W

TDP

106W

550 W

Suggested PSU

300 W

2x DVI

Outputs

2x DVI 1x S-Video

1x 6-pin + 1x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

G92B

GPU Name

RV670

G92-421-B1

GPU Variant

RV670 XT (215-0708005)

Tesla

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.754 billion

Transistors

0.666 billion

260 mm²

Die Size

192 mm²

Graphics Features

11.1 (10_0)

DirectX

10.1 (10_1)

3.3

OpenGL

3.3 (full) 4.0 (partial)

1.1

OpenCL

N/A

Vulkan

N/A

1.3

CUDA

-

4.0

Shader Model

4.1

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