ATI Radeon HD 4870 Mac Edition vs NVIDIA GeForce GTS 450

VS

ATI Radeon HD 4870 Mac Edition

NVIDIA GeForce GTS 450

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 Mac Edition and 1024MB VRAM GeForce GTS 450 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4870 Mac Edition 's Advantages

Larger VRAM bandwidth (108.8GB/s vs 57.73GB/s)

608 additional rendering cores

NVIDIA GeForce GTS 450 's Advantages

Released 1 years and 8 months late

More VRAM (1024GB vs 512GB)

Lower TDP (106W vs 150W)

Score

Benchmark

FP32 (float)

Radeon HD 4870 Mac Edition +99%

1.2 TFLOPS

GeForce GTS 450

0.601 TFLOPS

Radeon HD 4870 Mac Edition

VS

GeForce GTS 450

Graphics Card

Jan 2009

Release Date

Sep 2010

Radeon R700

Generation

GeForce 400

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

850 MHz

Memory Clock

902 MHz

Memory

512MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

108.8GB/s

Bandwidth

57.73GB/s

Render Config

10

Compute Units

-

SM Count

4

800

Shading Units

192

40

TMUs

32

16

ROPs

16

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

6.264 GPixel/s

30.00 GTexel/s

Texture Rate

25.06 GTexel/s

-

1200 GFLOPS

FP32 (float)

601.3 GFLOPS

240.0 GFLOPS

FP64 (double)

50.11 GFLOPS

Board Design

150W

TDP

106W

450 W

Suggested PSU

300 W

1x DVI 1x mini-DisplayPort 1.0

Outputs

2x DVI 1x mini-HDMI 1.3a

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

RV770

GPU Name

GF106

RV770 XT Mac (215-0669080)

GPU Variant

GF106-250-KA-A1

TeraScale

Architecture

Fermi

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.956 billion

Transistors

1.17 billion

256 mm²

Die Size

238 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_0)

3.3

OpenGL

4.6

1.1

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

2.1

4.1

Shader Model

5.1

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