AMD Radeon HD 7950 Boost vs ATI Radeon HD 3870

VS

AMD Radeon HD 7950 Boost

ATI Radeon HD 3870

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7950 Boost and 512MB VRAM Radeon HD 3870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7950 Boost 's Advantages

Released 4 years and 7 months late

Boost Clock925MHz

More VRAM (3GB vs 512GB)

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

1472 additional rendering cores

ATI Radeon HD 3870 's Advantages

Lower TDP (106W vs 200W)

Score

Benchmark

FP32 (float)

Radeon HD 7950 Boost +567%

3.315 TFLOPS

Radeon HD 3870

0.497 TFLOPS

Radeon HD 7950 Boost

VS

Radeon HD 3870

Graphics Card

Jun 2012

Release Date

Nov 2007

Southern Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

850 MHz

Base Clock

-

925 MHz

Boost Clock

-

1250 MHz

Memory Clock

1126 MHz

Memory

3GB

Memory Size

512MB

GDDR5

Memory Type

GDDR4

384bit

Memory Bus

256bit

240.0GB/s

Bandwidth

72.06GB/s

Render Config

28

Compute Units

4

-

1792

Shading Units

320

112

TMUs

16

32

ROPs

16

-

16 KB (per CU)

L1 Cache

-

768 KB

L2 Cache

256 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

12.43 GPixel/s

103.6 GTexel/s

Texture Rate

12.43 GTexel/s

-

3.315 TFLOPS

FP32 (float)

497.3 GFLOPS

828.8 GFLOPS

FP64 (double)

99.46 GFLOPS

Board Design

200W

TDP

106W

550 W

Suggested PSU

300 W

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

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Tahiti

GPU Name

RV670

Tahiti PRO2 (215-0821282)

GPU Variant

RV670 XT (215-0708005)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

4.313 billion

Transistors

0.666 billion

352 mm²

Die Size

192 mm²

Graphics Features

12 (11_1)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3 (full) 4.0 (partial)

1.2

OpenCL

N/A

1.2

Vulkan

N/A

-

5.1

Shader Model

4.1

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