ATI Radeon HD 3870 Mac Edition vs NVIDIA GeForce GT 545

VS

ATI Radeon HD 3870 Mac Edition

NVIDIA GeForce GT 545

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 Mac Edition and 1536MB VRAM GeForce GT 545 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

Larger VRAM bandwidth (72.06GB/s vs 38.40GB/s)

176 additional rendering cores

NVIDIA GeForce GT 545 's Advantages

Released 2 years and 11 months late

More VRAM (1536GB vs 512GB)

Lower TDP (70W vs 106W)

Score

Benchmark

FP32 (float)

Radeon HD 3870 Mac Edition +19%

0.497 TFLOPS

GeForce GT 545

0.415 TFLOPS

Radeon HD 3870 Mac Edition

VS

GeForce GT 545

Graphics Card

Jun 2008

Release Date

May 2011

Radeon R600

Generation

GeForce 500

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1126 MHz

Memory Clock

800 MHz

Memory

512MB

Memory Size

1536MB

GDDR4

Memory Type

DDR3

256bit

Memory Bus

192bit

72.06GB/s

Bandwidth

38.40GB/s

Render Config

4

Compute Units

-

SM Count

3

320

Shading Units

144

16

TMUs

24

16

ROPs

16

-

L1 Cache

64 KB (per SM)

256 KB

L2 Cache

384 KB

-

Theoretical Performance

12.43 GPixel/s

Pixel Rate

4.320 GPixel/s

12.43 GTexel/s

Texture Rate

17.28 GTexel/s

-

497.3 GFLOPS

FP32 (float)

414.7 GFLOPS

99.46 GFLOPS

FP64 (double)

34.56 GFLOPS

Board Design

106W

TDP

70W

300 W

Suggested PSU

250 W

2x DVI 1x S-Video

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 6-pin

Power Connectors

None

Graphics Processor

RV670

GPU Name

GF116

RV670 XT (215-0708005)

GPU Variant

-

TeraScale

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.666 billion

Transistors

1.17 billion

192 mm²

Die Size

238 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_0)

3.3 (full) 4.0 (partial)

OpenGL

4.6

N/A

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

2.1

4.1

Shader Model

5.1

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