AMD Radeon HD 6870 X2 vs NVIDIA GeForce GTX 1660

VS

AMD Radeon HD 6870 X2

NVIDIA GeForce GTX 1660

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 X2 and 6GB VRAM GeForce GTX 1660 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 1660 's Advantages

Released 7 years and 8 months late

Boost Clock1785MHz

More VRAM (6GB vs 1024GB)

Larger VRAM bandwidth (192.1GB/s vs 134.4GB/s)

288 additional rendering cores

Lower TDP (120W vs 300W)

Score

Benchmark

FP32 (float)

Radeon HD 6870 X2

2.016 TFLOPS

GeForce GTX 1660 +149%

5.027 TFLOPS

Radeon HD 6870 X2

VS

GeForce GTX 1660

Graphics Card

Jul 2011

Release Date

Mar 2019

Northern Islands

Generation

GeForce 16

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1530 MHz

-

Boost Clock

1785 MHz

1050 MHz

Memory Clock

2001 MHz

Memory

1024MB

Memory Size

6GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

192bit

134.4GB/s

Bandwidth

192.1GB/s

Render Config

14

Compute Units

-

SM Count

22

1120

Shading Units

1408

56

TMUs

88

32

ROPs

48

-

8 KB (per CU)

L1 Cache

64 KB (per SM)

512 KB

L2 Cache

1536 KB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

85.68 GPixel/s

50.40 GTexel/s

Texture Rate

157.1 GTexel/s

-

FP16 (half)

10.05 TFLOPS

2.016 TFLOPS

FP32 (float)

5.027 TFLOPS

-

FP64 (double)

157.1 GFLOPS

Board Design

300W

TDP

120W

700 W

Suggested PSU

300 W

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

Outputs

1x DVI 1x HDMI 2.0 1x DisplayPort 1.4a

-

Power Connectors

1x 8-pin

Graphics Processor

Barts

GPU Name

TU116

Barts XT (215-0798000)

GPU Variant

TU116-300-A1

TeraScale 2

Architecture

Turing

TSMC

Foundry

TSMC

40 nm

Process Size

12 nm

1.7 billion

Transistors

6.6 billion

255 mm²

Die Size

284 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (12_1)

4.4

OpenGL

4.6

1.2

OpenCL

3.0

N/A

Vulkan

1.3

-

CUDA

7.5

5.0

Shader Model

6.6

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