AMD Radeon HD 7970 X2 vs AMD Radeon HD 8860 OEM

VS

AMD Radeon HD 7970 X2

AMD Radeon HD 8860 OEM

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7970 X2 and 2GB VRAM Radeon HD 8860 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7970 X2 's Advantages

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (264.0GB/s vs 179.2GB/s)

768 additional rendering cores

AMD Radeon HD 8860 OEM 's Advantages

Lower TDP (175W vs 500W)

Score

Benchmark

FP32 (float)

Radeon HD 7970 X2 +60%

3.789 TFLOPS

Radeon HD 8860 OEM

2.368 TFLOPS

Radeon HD 7970 X2

VS

Radeon HD 8860 OEM

Graphics Card

Aug 2012

Release Date

Jan 2013

Southern Islands

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

1400 MHz

Memory

3GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

256bit

264.0GB/s

Bandwidth

179.2GB/s

Render Config

32

Compute Units

20

-

2048

Shading Units

1280

128

TMUs

80

32

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

768 KB

L2 Cache

512 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

29.60 GPixel/s

118.4 GTexel/s

Texture Rate

74.00 GTexel/s

-

3.789 TFLOPS

FP32 (float)

2.368 TFLOPS

947.2 GFLOPS

FP64 (double)

148.0 GFLOPS

Board Design

500W

TDP

175W

900 W

Suggested PSU

450 W

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

Outputs

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

3x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

New Zealand

GPU Name

Curacao

-

GPU Variant

Curacao PRO (215-0848000)

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

4.313 billion

Transistors

2.8 billion

352 mm²

Die Size

212 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.2

OpenCL

1.2

Vulkan

1.2

-

5.1

Shader Model

5.1

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