NVIDIA GeForce GTX 555 OEM vs ATI Radeon HD 4870 Mac Edition

VS

NVIDIA GeForce GTX 555 OEM

ATI Radeon HD 4870 Mac Edition

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 555 OEM and 512MB VRAM Radeon HD 4870 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 555 OEM 's Advantages

Released 2 years and 4 months late

More VRAM (1024GB vs 512GB)

ATI Radeon HD 4870 Mac Edition 's Advantages

Larger VRAM bandwidth (108.8GB/s vs 91.87GB/s)

512 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 555 OEM

0.848 TFLOPS

Radeon HD 4870 Mac Edition +41%

1.2 TFLOPS

GeForce GTX 555 OEM

VS

Radeon HD 4870 Mac Edition

Graphics Card

May 2011

Release Date

Jan 2009

GeForce 500

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

957 MHz

Memory Clock

850 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

256bit

91.87GB/s

Bandwidth

108.8GB/s

Render Config

-

Compute Units

10

6

SM Count

-

288

Shading Units

800

48

TMUs

40

24

ROPs

16

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

256 KB

-

Theoretical Performance

8.832 GPixel/s

Pixel Rate

12.00 GPixel/s

35.33 GTexel/s

Texture Rate

30.00 GTexel/s

-

847.9 GFLOPS

FP32 (float)

1200 GFLOPS

70.66 GFLOPS

FP64 (double)

240.0 GFLOPS

Board Design

150W

TDP

150W

450 W

Suggested PSU

450 W

2x DVI 1x mini-HDMI 1.3a

Outputs

1x DVI 1x mini-DisplayPort 1.0

2x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

GF114

GPU Name

RV770

GF114-200-KB-A1

GPU Variant

RV770 XT Mac (215-0669080)

Fermi 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

1.95 billion

Transistors

0.956 billion

332 mm²

Die Size

256 mm²

Graphics Features

12 (11_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

1.1

OpenCL

1.1

N/A

Vulkan

N/A

2.1

CUDA

-

5.1

Shader Model

4.1

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