ATI Radeon HD 3850 X3 vs AMD Radeon HD 7950 Boost

VS

ATI Radeon HD 3850 X3

AMD Radeon HD 7950 Boost

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3850 X3 and 3GB VRAM Radeon HD 7950 Boost to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 3850 X3 's Advantages

Lower TDP (145W vs 200W)

AMD Radeon HD 7950 Boost 's Advantages

Boost Clock925MHz

More VRAM (3GB vs 512GB)

Larger VRAM bandwidth (240.0GB/s vs 54.40GB/s)

1472 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 3850 X3

0.428 TFLOPS

Radeon HD 7950 Boost +674%

3.315 TFLOPS

Radeon HD 3850 X3

VS

Radeon HD 7950 Boost

Graphics Card

Unknown

Release Date

Jun 2012

Radeon R600

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

850 MHz

-

Boost Clock

925 MHz

850 MHz

Memory Clock

1250 MHz

Memory

512MB

Memory Size

3GB

GDDR3

Memory Type

GDDR5

256bit

Memory Bus

384bit

54.40GB/s

Bandwidth

240.0GB/s

Render Config

4

Compute Units

28

-

320

Shading Units

1792

16

TMUs

112

16

ROPs

32

-

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

768 KB

-

Theoretical Performance

10.70 GPixel/s

Pixel Rate

29.60 GPixel/s

10.70 GTexel/s

Texture Rate

103.6 GTexel/s

-

428.2 GFLOPS

FP32 (float)

3.315 TFLOPS

-

FP64 (double)

828.8 GFLOPS

Board Design

145W

TDP

200W

300 W

Suggested PSU

550 W

4x DVI

Outputs

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

1x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

RV670

GPU Name

Tahiti

RV670 PRO (215-0708003)

GPU Variant

Tahiti PRO2 (215-0821282)

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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