NVIDIA GeForce GTX 550 Ti vs ATI Radeon HD 4855

VS

NVIDIA GeForce GTX 550 Ti

ATI Radeon HD 4855

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 550 Ti and 512MB VRAM Radeon HD 4855 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 550 Ti 's Advantages

Released 1 years and 2 months late

More VRAM (1024GB vs 512GB)

ATI Radeon HD 4855 's Advantages

Larger VRAM bandwidth (115.2GB/s vs 98.50GB/s)

448 additional rendering cores

Lower TDP (110W vs 116W)

Score

Benchmark

FP32 (float)

GeForce GTX 550 Ti

0.691 TFLOPS

Radeon HD 4855 +6%

0.736 TFLOPS

GeForce GTX 550 Ti

VS

Radeon HD 4855

Graphics Card

Mar 2011

Release Date

Jan 2010

GeForce 500

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1026 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

256bit

98.50GB/s

Bandwidth

115.2GB/s

Render Config

-

Compute Units

8

4

SM Count

-

192

Shading Units

640

32

TMUs

32

24

ROPs

16

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

256 KB

-

Theoretical Performance

7.200 GPixel/s

Pixel Rate

9.200 GPixel/s

28.80 GTexel/s

Texture Rate

18.40 GTexel/s

-

691.2 GFLOPS

FP32 (float)

736.0 GFLOPS

57.60 GFLOPS

FP64 (double)

147.2 GFLOPS

Board Design

116W

TDP

110W

300 W

Suggested PSU

300 W

2x DVI 1x mini-HDMI 1.3a

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

GF116

GPU Name

RV770

GF116-400-A1

GPU Variant

RV770 PRO (215-0669065)

Fermi 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

1.17 billion

Transistors

0.956 billion

238 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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