AMD Radeon R9 270 1024SP vs NVIDIA GeForce GTX 660 Rev. 2

VS

AMD Radeon R9 270 1024SP NVIDIA GeForce GTX 660 Rev. 2

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 270 1024SP and 2GB VRAM GeForce GTX 660 Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 270 1024SP 's Advantages

Released 6 months late

Larger VRAM bandwidth (153.6GB/s vs 144.2GB/s)

64 additional rendering cores

NVIDIA GeForce GTX 660 Rev. 2 's Advantages

Boost Clock has increased by 12% (1032MHz vs 925MHz)

Lower TDP (140W vs 150W)

Score

Benchmark

FP32 (float)

Radeon R9 270 1024SP

1.894 TFLOPS

GeForce GTX 660 Rev. 2 +4%

1.981 TFLOPS

Radeon R9 270 1024SP

VS

GeForce GTX 660 Rev. 2

Graphics Card

Mar 2015

Release Date

Sep 2014

Volcanic Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

900 MHz

Base Clock

980 MHz

925 MHz

Boost Clock

1032 MHz

1200 MHz

Memory Clock

1502 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

192bit

153.6GB/s

Bandwidth

144.2GB/s

Render Config

-

SM Count

-

16

Compute Units

-

1024

Shading Units

960

64

TMUs

80

32

ROPs

24

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

384 KB

Theoretical Performance

29.60 GPixel/s

Pixel Rate

20.64 GPixel/s

59.20 GTexel/s

Texture Rate

82.56 GTexel/s

-

FP16 (half)

-

1.894 TFLOPS

FP32 (float)

1.981 TFLOPS

118.4 GFLOPS

FP64 (double)

82.56 GFLOPS

Graphics Processor

Pitcairn

GPU Name

GK104

Pitcairn PRO (215-0828062)

GPU Variant

-

GCN 1.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

3.54 billion

212 mm²

Die Size

294 mm²

Board Design

150W

TDP

140W

450 W

Suggested PSU

300 W

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

Outputs

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

1x 6-pin

Power Connectors

1x 6-pin

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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