AMD Radeon R9 390X vs AMD Radeon HD 7950 Boost

VS

AMD Radeon R9 390X AMD Radeon HD 7950 Boost

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

Main Differences

AMD Radeon R9 390X 's Advantages

Released 3 years late

More VRAM (8GB vs 3GB)

Larger VRAM bandwidth (384.0GB/s vs 240.0GB/s)

1024 additional rendering cores

AMD Radeon HD 7950 Boost 's Advantages

Boost Clock925MHz

Lower TDP (200W vs 275W)

Score

Benchmark

FP32 (float)

Radeon R9 390X +78%

5.914 TFLOPS

Radeon HD 7950 Boost

3.315 TFLOPS

Radeon R9 390X

VS

Radeon HD 7950 Boost

Graphics Card

Jun 2015

Release Date

Jun 2012

Pirate Islands

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

850 MHz

-

Boost Clock

925 MHz

1500 MHz

Memory Clock

1250 MHz

Memory

8GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

512bit

Memory Bus

384bit

384.0GB/s

Bandwidth

240.0GB/s

Render Config

-

SM Count

-

44

Compute Units

28

2816

Shading Units

1792

176

TMUs

112

64

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

768 KB

Theoretical Performance

67.20 GPixel/s

Pixel Rate

29.60 GPixel/s

184.8 GTexel/s

Texture Rate

103.6 GTexel/s

-

FP16 (half)

-

5.914 TFLOPS

FP32 (float)

3.315 TFLOPS

739.2 GFLOPS

FP64 (double)

828.8 GFLOPS

Graphics Processor

Grenada

GPU Name

Tahiti

Grenada XT (215-0880004)

GPU Variant

Tahiti PRO2 (215-0821282)

GCN 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

6.2 billion

Transistors

4.313 billion

438 mm²

Die Size

352 mm²

Board Design

275W

TDP

200W

600 W

Suggested PSU

550 W

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

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

2x 6-pin

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.0

OpenCL

1.2

Vulkan

1.2

-

CUDA

-

6.3

Shader Model

5.1

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