AMD Radeon HD 6970 vs AMD Radeon R9 390X

VS

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6970 and 8GB VRAM Radeon R9 390X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6970 's Advantages

Lower TDP (250W vs 275W)

AMD Radeon R9 390X 's Advantages

Released 4 years and 6 months late

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (384.0GB/s vs 176.0GB/s)

1280 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6970

2.703 TFLOPS

Radeon R9 390X +118%

5.914 TFLOPS

Radeon HD 6970

VS

Radeon R9 390X

Graphics Card

Dec 2010

Release Date

Jun 2015

Northern Islands

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1375 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

512bit

176.0GB/s

Bandwidth

384.0GB/s

Render Config

-

SM Count

-

24

Compute Units

44

1536

Shading Units

2816

96

TMUs

176

32

ROPs

64

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

1024 KB

Theoretical Performance

28.16 GPixel/s

Pixel Rate

67.20 GPixel/s

84.48 GTexel/s

Texture Rate

184.8 GTexel/s

-

FP16 (half)

-

2.703 TFLOPS

FP32 (float)

5.914 TFLOPS

675.8 GFLOPS

FP64 (double)

739.2 GFLOPS

Graphics Processor

Cayman

GPU Name

Grenada

Cayman XT (215-0807007)

GPU Variant

Grenada XT (215-0880004)

TeraScale 3

Architecture

GCN 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

2.64 billion

Transistors

6.2 billion

389 mm²

Die Size

438 mm²

Board Design

250W

TDP

275W

600 W

Suggested PSU

600 W

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

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Features

11.2 (11_0)

DirectX

12 (12_0)

4.4

OpenGL

4.6

1.2

OpenCL

2.0

N/A

Vulkan

1.2

-

CUDA

-

5.0

Shader Model

6.3

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