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

VS

ATI Radeon HD 3870 Mac Edition

NVIDIA GeForce GTX 275 PhysX Edition

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

Main Differences

ATI Radeon HD 3870 Mac Edition 's Advantages

80 additional rendering cores

Lower TDP (106W vs 219W)

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)

Score

Benchmark

FP32 (float)

Radeon HD 3870 Mac Edition

0.497 TFLOPS

GeForce GTX 275 PhysX Edition +25%

0.622 TFLOPS

Radeon HD 3870 Mac Edition

VS

GeForce GTX 275 PhysX Edition

Graphics Card

Jun 2008

Release Date

Feb 2010

Radeon R600

Generation

GeForce 200

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1126 MHz

Memory Clock

1134 MHz

Memory

512MB

Memory Size

896MB

GDDR4

Memory Type

GDDR3

256bit

Memory Bus

448bit

72.06GB/s

Bandwidth

127.0GB/s

Render Config

4

Compute Units

-

SM Count

30

320

Shading Units

240

16

TMUs

80

16

ROPs

28

-

256 KB

L2 Cache

224 KB

-

Theoretical Performance

12.43 GPixel/s

Pixel Rate

17.72 GPixel/s

12.43 GTexel/s

Texture Rate

50.64 GTexel/s

-

497.3 GFLOPS

FP32 (float)

622.1 GFLOPS

99.46 GFLOPS

FP64 (double)

77.76 GFLOPS

Board Design

106W

TDP

219W

300 W

Suggested PSU

550 W

2x DVI 1x S-Video

Outputs

2x DVI

1x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

RV670

GPU Name

G92B

RV670 XT (215-0708005)

GPU Variant

G92-421-B1

TeraScale

Architecture

Tesla

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.666 billion

Transistors

0.754 billion

192 mm²

Die Size

260 mm²

Graphics Features

10.1 (10_1)

DirectX

11.1 (10_0)

3.3 (full) 4.0 (partial)

OpenGL

3.3

N/A

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

1.3

4.1

Shader Model

4.0

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