ATI Radeon HD 4870 Mac Edition vs ATI FirePro V7900

VS

ATI Radeon HD 4870 Mac Edition

ATI FirePro V7900

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 Mac Edition and 2GB VRAM FirePro V7900 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI FirePro V7900 's Advantages

Released 2 years and 4 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (160.0GB/s vs 108.8GB/s)

480 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 4870 Mac Edition

1.2 TFLOPS

FirePro V7900 +54%

1.856 TFLOPS

Radeon HD 4870 Mac Edition

VS

FirePro V7900

Graphics Card

Jan 2009

Release Date

May 2011

Radeon R700

Generation

FirePro

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

850 MHz

Memory Clock

1250 MHz

Memory

512MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

108.8GB/s

Bandwidth

160.0GB/s

Render Config

10

Compute Units

20

-

800

Shading Units

1280

40

TMUs

80

16

ROPs

32

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

23.20 GPixel/s

30.00 GTexel/s

Texture Rate

58.00 GTexel/s

-

1200 GFLOPS

FP32 (float)

1.856 TFLOPS

240.0 GFLOPS

FP64 (double)

464.0 GFLOPS

Board Design

150W

TDP

150W

450 W

Suggested PSU

450 W

1x DVI 1x mini-DisplayPort 1.0

Outputs

4x DisplayPort 1.2

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

RV770

GPU Name

Cayman

RV770 XT Mac (215-0669080)

GPU Variant

Cayman PRO GL

TeraScale

Architecture

TeraScale 3

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.956 billion

Transistors

2.64 billion

256 mm²

Die Size

389 mm²

Graphics Features

10.1 (10_1)

DirectX

11.2 (11_0)

3.3

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

-

4.1

Shader Model

5.0

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