AMD Radeon HD 7950 Boost vs ATI Radeon HD 4580

VS

AMD Radeon HD 7950 Boost

ATI Radeon HD 4580

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7950 Boost and 512MB VRAM Radeon HD 4580 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 7 months late

Boost Clock925MHz

More VRAM (3GB vs 512GB)

Larger VRAM bandwidth (240.0GB/s vs 22.18GB/s)

1672 additional rendering cores

ATI Radeon HD 4580 's Advantages

Lower TDP (65W vs 200W)

Score

Benchmark

FP32 (float)

Radeon HD 7950 Boost +1635%

3.315 TFLOPS

Radeon HD 4580

0.191 TFLOPS

Radeon HD 7950 Boost

VS

Radeon HD 4580

Graphics Card

Jun 2012

Release Date

Nov 2011

Southern Islands

Generation

Radeon R700

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

693 MHz

Memory

3GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

384bit

Memory Bus

128bit

240.0GB/s

Bandwidth

22.18GB/s

Render Config

28

Compute Units

3

-

1792

Shading Units

120

112

TMUs

8

32

ROPs

4

-

16 KB (per CU)

L1 Cache

-

768 KB

L2 Cache

128 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

3.184 GPixel/s

103.6 GTexel/s

Texture Rate

6.368 GTexel/s

-

3.315 TFLOPS

FP32 (float)

191.0 GFLOPS

828.8 GFLOPS

FP64 (double)

-

Board Design

200W

TDP

65W

550 W

Suggested PSU

250 W

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

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

None

Graphics Processor

Tahiti

GPU Name

RV635

Tahiti PRO2 (215-0821282)

GPU Variant

RV635 PRO (215-0682008)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

4.313 billion

Transistors

0.378 billion

352 mm²

Die Size

135 mm²

Graphics Features

12 (11_1)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

1.2

OpenCL

N/A

1.2

Vulkan

N/A

-

5.1

Shader Model

4.1

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