AMD Radeon R9 390 vs AMD Radeon HD 7970

VS

We compared two Desktop platform GPUs: 8GB VRAM Radeon R9 390 and 3GB VRAM Radeon HD 7970 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 390 's Advantages

Released 3 years and 6 months late

More VRAM (8GB vs 3GB)

Larger VRAM bandwidth (384.0GB/s vs 264.0GB/s)

512 additional rendering cores

AMD Radeon HD 7970 's Advantages

Lower TDP (250W vs 275W)

Score

Benchmark

FP32 (float)

Radeon R9 390 +35%

5.12 TFLOPS

Radeon HD 7970

3.789 TFLOPS

3DMark Time Spy

Radeon R9 390 +73%

3953

Radeon HD 7970

2279

Radeon R9 390

VS

Radeon HD 7970

Graphics Card

Jun 2015

Release Date

Dec 2011

Pirate Islands

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1500 MHz

Memory Clock

1375 MHz

Memory

8GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

512bit

Memory Bus

384bit

384.0GB/s

Bandwidth

264.0GB/s

Render Config

-

SM Count

-

40

Compute Units

32

2560

Shading Units

2048

160

TMUs

128

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

64.00 GPixel/s

Pixel Rate

29.60 GPixel/s

160.0 GTexel/s

Texture Rate

118.4 GTexel/s

-

FP16 (half)

-

5.120 TFLOPS

FP32 (float)

3.789 TFLOPS

640.0 GFLOPS

FP64 (double)

947.2 GFLOPS

Graphics Processor

Grenada

GPU Name

Tahiti

Grenada PRO (215-0880030)

GPU Variant

Tahiti XT (215-0821060)

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

250W

600 W

Suggested PSU

600 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

1x 6-pin + 1x 8-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

Related GPU Comparisons

1

AMD Radeon R9 390 vs AMD FirePro S10000 Passive

2

AMD Radeon R9 390 vs NVIDIA GeForce 8400 GS Rev. 2

3

AMD Radeon R9 390 vs AMD Radeon RX 560 XT

4

AMD Radeon R9 390 vs NVIDIA CMP 40HX

5

AMD Radeon R9 390 vs ATI Radeon HD 3570

6

AMD Radeon R9 390 vs NVIDIA GeForce GTX 650 Ti Boost

7

AMD Radeon R9 390 vs NVIDIA GeForce GTX 670

8

AMD Radeon R9 390 vs NVIDIA GeForce GT 520 OEM

9

AMD Radeon R9 390 vs AMD Radeon HD 7970 GHz Edition

10

AMD Radeon R9 390 vs NVIDIA GeForce 8400 GS PCI

Related News

1

AMD Ryzen 9000X3D Series to Feature Fully Unlocked Overclocking; DDR5-6400: The 'Sweet Spot' for Zen 5 Memory Speeds

2

Intel Z890 Motherboard Specs Leaked: Farewell to DDR4 Memory

3

AMD Ryzen 9000 Series Now Available for Pre-order in Europe: 9950X Priced at €660, Shipping by August 2

4

AMD's Latest Breakthrough Technology Could Change the Game in the Future

5

Researchers Utilize NVIDIA Omniverse Platform to Analyze and Improve 3D Stacked Chip Designs

6

TSMC to Receive Over 60 EUV Lithography Machines Over the Next Two Years, Investing More Than $12.3 Billion

7

Samsung's Own 3nm Yield is Disheartening: Galaxy S25 May Introduce MediaTek for the First Time

8

AMD Ryzen 9000 DDR5 Memory Frequency Soars: Reaches 8000MHz with All Four Slots Occupied

9

Snapdragon 8 Gen 4 to Feature Frame Interpolation for GPU: A Game-Changing Experience

10

Intel Adds 5 New Device IDs to Latest Linux Xe Kernel in Preparation for Battlemage