AMD Radeon R5 340X OEM vs NVIDIA GeForce GTX 660

VS

AMD Radeon R5 340X OEM

NVIDIA GeForce GTX 660

We compared two Desktop platform GPUs: 2GB VRAM Radeon R5 340X OEM and 2GB VRAM GeForce GTX 660 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 340X OEM 's Advantages

Released 2 years and 8 months late

Lower TDP (65W vs 140W)

NVIDIA GeForce GTX 660 's Advantages

Boost Clock1032MHz

Larger VRAM bandwidth (144.2GB/s vs 16.00GB/s)

576 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R5 340X OEM

0.691 TFLOPS

GeForce GTX 660 +186%

1.981 TFLOPS

Radeon R5 340X OEM

VS

GeForce GTX 660

Graphics Card

May 2015

Release Date

Sep 2012

Pirate Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

980 MHz

-

Boost Clock

1032 MHz

1000 MHz

Memory Clock

1502 MHz

Memory

2GB

Memory Size

2GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

192bit

16.00GB/s

Bandwidth

144.2GB/s

Render Config

6

Compute Units

-

384

Shading Units

960

24

TMUs

80

8

ROPs

24

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

128 KB

L2 Cache

384 KB

-

Theoretical Performance

7.200 GPixel/s

Pixel Rate

20.64 GPixel/s

21.60 GTexel/s

Texture Rate

82.56 GTexel/s

-

691.2 GFLOPS

FP32 (float)

1.981 TFLOPS

43.20 GFLOPS

FP64 (double)

82.56 GFLOPS

Board Design

65W

TDP

140W

250 W

Suggested PSU

300 W

1x DVI 1x DisplayPort 1.2

Outputs

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

None

Power Connectors

1x 6-pin

Graphics Processor

Oland

GPU Name

GK106

Oland XT (215-0837000)

GPU Variant

GK106-400-A1

GCN 1.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

0.95 billion

Transistors

2.54 billion

77 mm²

Die Size

221 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

3.0

1.2

Vulkan

1.1

-

CUDA

3.0

5.1

Shader Model

5.1

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