ATI Radeon HD 3870 Mac Edition vs AMD Radeon HD 7950 Monica BIOS 2

VS

ATI Radeon HD 3870 Mac Edition

AMD Radeon HD 7950 Monica BIOS 2

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 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

AMD Radeon HD 7950 Monica BIOS 2 's Advantages

Released 3 years and 7 months late

More VRAM (3GB vs 512GB)

Larger VRAM bandwidth (240.0GB/s vs 72.06GB/s)

448 additional rendering cores

Lower TDP (85W vs 106W)

Score

Benchmark

FP32 (float)

Radeon HD 3870 Mac Edition

0.497 TFLOPS

Radeon HD 7950 Monica BIOS 2 +147%

1.229 TFLOPS

Radeon HD 3870 Mac Edition

VS

Radeon HD 7950 Monica BIOS 2

Graphics Card

Jun 2008

Release Date

Jan 2012

Radeon R600

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1126 MHz

Memory Clock

1250 MHz

Memory

512MB

Memory Size

3GB

GDDR4

Memory Type

GDDR5

256bit

Memory Bus

384bit

72.06GB/s

Bandwidth

240.0GB/s

Render Config

4

Compute Units

12

-

320

Shading Units

768

16

TMUs

48

16

ROPs

32

-

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

768 KB

-

Theoretical Performance

12.43 GPixel/s

Pixel Rate

25.60 GPixel/s

12.43 GTexel/s

Texture Rate

38.40 GTexel/s

-

497.3 GFLOPS

FP32 (float)

1229 GFLOPS

99.46 GFLOPS

FP64 (double)

307.2 GFLOPS

Board Design

106W

TDP

85W

300 W

Suggested PSU

250 W

2x DVI 1x S-Video

Outputs

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

1x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

RV670

GPU Name

Tahiti

RV670 XT (215-0708005)

GPU Variant

Tahiti PRO (215-0821056)

TeraScale

Architecture

GCN 1.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.666 billion

Transistors

4.313 billion

192 mm²

Die Size

352 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_1)

3.3 (full) 4.0 (partial)

OpenGL

4.6

N/A

OpenCL

1.2

N/A

Vulkan

1.2

-

4.1

Shader Model

5.1

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