ATI Radeon HD 5770 vs ATI Radeon HD 4855

VS

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 5770 and 512MB VRAM Radeon HD 4855 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 5770 's Advantages

More VRAM (1024GB vs 512GB)

160 additional rendering cores

Lower TDP (108W vs 110W)

ATI Radeon HD 4855 's Advantages

Larger VRAM bandwidth (115.2GB/s vs 76.80GB/s)

Score

Benchmark

FP32 (float)

Radeon HD 5770 +84%

1.36 TFLOPS

Radeon HD 4855

0.736 TFLOPS

Radeon HD 5770

VS

Radeon HD 4855

Graphics Card

Oct 2009

Release Date

Jan 2010

Evergreen

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1200 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

76.80GB/s

Bandwidth

115.2GB/s

Render Config

-

SM Count

-

10

Compute Units

8

800

Shading Units

640

40

TMUs

32

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

Theoretical Performance

13.60 GPixel/s

Pixel Rate

9.200 GPixel/s

34.00 GTexel/s

Texture Rate

18.40 GTexel/s

-

FP16 (half)

-

1360 GFLOPS

FP32 (float)

736.0 GFLOPS

-

FP64 (double)

147.2 GFLOPS

Graphics Processor

Juniper

GPU Name

RV770

Juniper XT (215-0754013)

GPU Variant

RV770 PRO (215-0669065)

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

1.04 billion

Transistors

0.956 billion

166 mm²

Die Size

256 mm²

Board Design

108W

TDP

110W

300 W

Suggested PSU

300 W

2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 6-pin

Power Connectors

1x 6-pin

Graphics Features

11.2 (11_0)

DirectX

10.1 (10_1)

4.4

OpenGL

3.3

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

-

5.0

Shader Model

4.1

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