ATI Radeon HD 4870 Mac Edition vs AMD Radeon HD 7950 Monica BIOS 2

VS

ATI Radeon HD 4870 Mac Edition

AMD Radeon HD 7950 Monica BIOS 2

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 Mac Edition and 3GB VRAM Radeon HD 7950 Monica BIOS 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4870 Mac Edition 's Advantages

32 additional rendering cores

AMD Radeon HD 7950 Monica BIOS 2 's Advantages

Released 3 years late

More VRAM (3GB vs 512GB)

Larger VRAM bandwidth (240.0GB/s vs 108.8GB/s)

Lower TDP (85W vs 150W)

Score

Benchmark

FP32 (float)

Radeon HD 4870 Mac Edition

1.2 TFLOPS

Radeon HD 7950 Monica BIOS 2 +2%

1.229 TFLOPS

Radeon HD 4870 Mac Edition

VS

Radeon HD 7950 Monica BIOS 2

Graphics Card

Jan 2009

Release Date

Jan 2012

Radeon R700

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

850 MHz

Memory Clock

1250 MHz

Memory

512MB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

384bit

108.8GB/s

Bandwidth

240.0GB/s

Render Config

10

Compute Units

12

-

800

Shading Units

768

40

TMUs

48

16

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

768 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

25.60 GPixel/s

30.00 GTexel/s

Texture Rate

38.40 GTexel/s

-

1200 GFLOPS

FP32 (float)

1229 GFLOPS

240.0 GFLOPS

FP64 (double)

307.2 GFLOPS

Board Design

150W

TDP

85W

450 W

Suggested PSU

250 W

1x DVI 1x mini-DisplayPort 1.0

Outputs

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

2x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

RV770

GPU Name

Tahiti

RV770 XT Mac (215-0669080)

GPU Variant

Tahiti PRO (215-0821056)

TeraScale

Architecture

GCN 1.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.956 billion

Transistors

4.313 billion

256 mm²

Die Size

352 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_1)

3.3

OpenGL

4.6

1.1

OpenCL

1.2

N/A

Vulkan

1.2

-

4.1

Shader Model

5.1

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