ATI FirePro V7800P vs ATI Radeon HD 4855

VS

ATI FirePro V7800P

ATI Radeon HD 4855

We compared two Desktop platform GPUs: 2GB VRAM FirePro V7800P and 512MB VRAM Radeon HD 4855 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI FirePro V7800P 's Advantages

Released 1 years and 4 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (128.0GB/s vs 115.2GB/s)

800 additional rendering cores

ATI Radeon HD 4855 's Advantages

Lower TDP (110W vs 138W)

Score

Benchmark

FP32 (float)

FirePro V7800P +173%

2.016 TFLOPS

Radeon HD 4855

0.736 TFLOPS

FirePro V7800P

VS

Radeon HD 4855

Graphics Card

May 2011

Release Date

Jan 2010

FirePro

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

128.0GB/s

Bandwidth

115.2GB/s

Render Config

18

Compute Units

8

-

1440

Shading Units

640

72

TMUs

32

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

22.40 GPixel/s

Pixel Rate

9.200 GPixel/s

50.40 GTexel/s

Texture Rate

18.40 GTexel/s

-

2.016 TFLOPS

FP32 (float)

736.0 GFLOPS

403.2 GFLOPS

FP64 (double)

147.2 GFLOPS

Board Design

138W

TDP

110W

300 W

Suggested PSU

300 W

1x DisplayPort 1.1

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Cypress

GPU Name

RV770

Cypress PRO GL

GPU Variant

RV770 PRO (215-0669065)

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

2.154 billion

Transistors

0.956 billion

334 mm²

Die Size

256 mm²

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

-

5.0

Shader Model

4.1

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