AMD Radeon HD 7950 Boost vs AMD Radeon R9 390 X2

VS

AMD Radeon HD 7950 Boost

AMD Radeon R9 390 X2

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7950 Boost and 8GB VRAM Radeon R9 390 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7950 Boost 's Advantages

Boost Clock925MHz

Lower TDP (200W vs 580W)

AMD Radeon R9 390 X2 's Advantages

Released 3 years and 3 months late

More VRAM (8GB vs 3GB)

Larger VRAM bandwidth (345.6GB/s vs 240.0GB/s)

768 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7950 Boost

3.315 TFLOPS

Radeon R9 390 X2 +54%

5.12 TFLOPS

Radeon HD 7950 Boost

VS

Radeon R9 390 X2

Graphics Card

Jun 2012

Release Date

Sep 2015

Southern Islands

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

850 MHz

Base Clock

-

925 MHz

Boost Clock

-

1250 MHz

Memory Clock

1350 MHz

Memory

3GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

512bit

240.0GB/s

Bandwidth

345.6GB/s

Render Config

28

Compute Units

40

-

1792

Shading Units

2560

112

TMUs

160

32

ROPs

64

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

768 KB

L2 Cache

1024 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

64.00 GPixel/s

103.6 GTexel/s

Texture Rate

160.0 GTexel/s

-

3.315 TFLOPS

FP32 (float)

5.120 TFLOPS

828.8 GFLOPS

FP64 (double)

640.0 GFLOPS

Board Design

200W

TDP

580W

550 W

Suggested PSU

950 W

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

Outputs

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

2x 6-pin

Power Connectors

4x 8-pin

Graphics Processor

Tahiti

GPU Name

Grenada

Tahiti PRO2 (215-0821282)

GPU Variant

Grenada PRO (215-0880030)

GCN 1.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

4.313 billion

Transistors

6.2 billion

352 mm²

Die Size

438 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.0

1.2

Vulkan

1.2

-

5.1

Shader Model

6.3

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