NVIDIA GeForce GTX 1660 vs AMD Radeon HD 7990

VS

NVIDIA GeForce GTX 1660 AMD Radeon HD 7990

We compared two Desktop platform GPUs: 6GB VRAM GeForce GTX 1660 and 3GB VRAM Radeon HD 7990 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 1660 's Advantages

Released 5 years and 11 months late

Boost Clock has increased by 78% (1785MHz vs 1000MHz)

More VRAM (6GB vs 3GB)

Lower TDP (120W vs 375W)

AMD Radeon HD 7990 's Advantages

Larger VRAM bandwidth (288.0GB/s vs 192.1GB/s)

640 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 1660 +22%

5.027 TFLOPS

Radeon HD 7990

4.096 TFLOPS

GeForce GTX 1660

VS

Radeon HD 7990

Graphics Card

Mar 2019

Release Date

Apr 2013

GeForce 16

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1530 MHz

Base Clock

950 MHz

1785 MHz

Boost Clock

1000 MHz

2001 MHz

Memory Clock

1500 MHz

Memory

6GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

384bit

192.1GB/s

Bandwidth

288.0GB/s

Render Config

22

SM Count

-

Compute Units

32

1408

Shading Units

2048

88

TMUs

128

48

ROPs

32

-

Tensor Cores

-

RT Cores

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

1536 KB

L2 Cache

768 KB

Theoretical Performance

85.68 GPixel/s

Pixel Rate

32.00 GPixel/s

157.1 GTexel/s

Texture Rate

128.0 GTexel/s

10.05 TFLOPS

FP16 (half)

-

5.027 TFLOPS

FP32 (float)

4.096 TFLOPS

157.1 GFLOPS

FP64 (double)

1024 GFLOPS

Graphics Processor

TU116

GPU Name

Malta

TU116-300-A1

GPU Variant

Malta XT (215-0849026)

Turing

Architecture

GCN 1.0

TSMC

Foundry

TSMC

12 nm

Process Size

28 nm

6.6 billion

Transistors

4.313 billion

284 mm²

Die Size

365 mm²

Board Design

120W

TDP

375W

300 W

Suggested PSU

750 W

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

Outputs

1x DVI 4x mini-DisplayPort 1.2

1x 8-pin

Power Connectors

2x 8-pin

Graphics Features

12 (12_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

3.0

OpenCL

1.2

1.3

Vulkan

1.2

7.5

CUDA

-

6.6

Shader Model

5.1

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