AMD Radeon HD 7970 vs AMD Radeon HD 6870 X2

VS

AMD Radeon HD 7970 AMD Radeon HD 6870 X2

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7970 and 1024MB VRAM Radeon HD 6870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7970 's Advantages

More VRAM (3GB vs 1GB)

Larger VRAM bandwidth (264.0GB/s vs 134.4GB/s)

928 additional rendering cores

Lower TDP (250W vs 300W)

Score

Benchmark

FP32 (float)

Radeon HD 7970 +87%

3.789 TFLOPS

Radeon HD 6870 X2

2.016 TFLOPS

Radeon HD 7970

VS

Radeon HD 6870 X2

Graphics Card

Dec 2011

Release Date

Jul 2011

Southern Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1375 MHz

Memory Clock

1050 MHz

Memory

3GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

256bit

264.0GB/s

Bandwidth

134.4GB/s

Render Config

-

SM Count

-

32

Compute Units

14

2048

Shading Units

1120

128

TMUs

56

32

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

768 KB

L2 Cache

512 KB

Theoretical Performance

29.60 GPixel/s

Pixel Rate

28.80 GPixel/s

118.4 GTexel/s

Texture Rate

50.40 GTexel/s

-

FP16 (half)

-

3.789 TFLOPS

FP32 (float)

2.016 TFLOPS

947.2 GFLOPS

FP64 (double)

-

Graphics Processor

Tahiti

GPU Name

Barts

Tahiti XT (215-0821060)

GPU Variant

Barts XT (215-0798000)

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

4.313 billion

Transistors

1.7 billion

352 mm²

Die Size

255 mm²

Board Design

250W

TDP

300W

600 W

Suggested PSU

700 W

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

Outputs

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

1x 6-pin + 1x 8-pin

Power Connectors

-

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.2

OpenCL

1.2

Vulkan

N/A

-

CUDA

-

5.1

Shader Model

5.0

Related GPU Comparisons

1

AMD Radeon HD 7970 vs NVIDIA CMP 40HX

2

AMD Radeon HD 7970 vs AMD Radeon RX 7900 GRE

3

AMD Radeon HD 7970 vs AMD Radeon RX 470

4

AMD Radeon HD 7970 vs AMD Radeon PRO W7600

5

AMD Radeon HD 7970 vs NVIDIA GeForce GTX 760

6

AMD Radeon HD 7970 vs AMD Radeon HD 7970 GHz Edition

7

AMD Radeon HD 7970 vs AMD Radeon RX 7700 XT

8

AMD Radeon HD 7970 vs NVIDIA GeForce GTX 1060 3 GB GP104

9

AMD Radeon HD 7970 vs AMD Radeon Pro W6600

10

AMD Radeon HD 7970 vs NVIDIA GeForce GTX 555 OEM

Related News

1

Intel Z890 Motherboard Specs Leaked: Farewell to DDR4 Memory

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

Ryzen AI 9 365 Benchmark Results Leaked: Significant Improvements in Multi-Core and IPC Performance Over Previous Generation