NVIDIA GeForce GTX 660 OEM vs AMD Radeon 550X 640SP

VS

NVIDIA GeForce GTX 660 OEM AMD Radeon 550X 640SP

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 660 OEM and 4GB VRAM Radeon 550X 640SP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 OEM 's Advantages

Larger VRAM bandwidth (134.4GB/s vs 48.00GB/s)

512 additional rendering cores

AMD Radeon 550X 640SP 's Advantages

Released 5 years and 8 months late

Boost Clock has increased by 21% (1071MHz vs 888MHz)

More VRAM (4GB vs 1GB)

Lower TDP (50W vs 130W)

Score

Benchmark

FP32 (float)

GeForce GTX 660 OEM +49%

2.046 TFLOPS

Radeon 550X 640SP

1.371 TFLOPS

GeForce GTX 660 OEM

VS

Radeon 550X 640SP

Graphics Card

Aug 2012

Release Date

Apr 2018

GeForce 600

Generation

Polaris

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

823 MHz

Base Clock

1019 MHz

888 MHz

Boost Clock

1071 MHz

1400 MHz

Memory Clock

1500 MHz

Memory

1536MB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

64bit

134.4GB/s

Bandwidth

48.00GB/s

Render Config

-

SM Count

-

Compute Units

10

1152

Shading Units

640

96

TMUs

40

24

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

256 KB

Theoretical Performance

21.31 GPixel/s

Pixel Rate

17.14 GPixel/s

85.25 GTexel/s

Texture Rate

42.84 GTexel/s

-

FP16 (half)

1371 GFLOPS

2.046 TFLOPS

FP32 (float)

1371 GFLOPS

85.25 GFLOPS

FP64 (double)

85.68 GFLOPS

Graphics Processor

GK104

GPU Name

Lexa

GK104-200-KD-A2

GPU Variant

Lexa PRO (215-0904018)

Kepler

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

3.54 billion

Transistors

2.2 billion

294 mm²

Die Size

103 mm²

Board Design

130W

TDP

50W

300 W

Suggested PSU

250 W

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

Outputs

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

1x 6-pin

Power Connectors

None

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

3.0

OpenCL

2.1

1.1

Vulkan

1.2

3.0

CUDA

-

5.1

Shader Model

6.4

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