Home GPU Comparison NVIDIA GeForce GTX 660 vs AMD Radeon R9 270X

NVIDIA GeForce GTX 660 vs AMD Radeon R9 270X

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

Main Differences

NVIDIA GeForce GTX 660 's Advantages
Lower TDP (140W vs 180W)
AMD Radeon R9 270X 's Advantages
Released 1 years and 1 months late
Boost Clock has increased by 2% (1050MHz vs 1032MHz)
Larger VRAM bandwidth (179.2GB/s vs 144.2GB/s)
320 additional rendering cores

Score

Benchmark

FP32 (float)
GeForce GTX 660
1.981 TFLOPS
Radeon R9 270X +35%
2.688 TFLOPS
3DMark Time Spy
GeForce GTX 660
1308
Radeon R9 270X +35%
1769
GeForce GTX 660
VS
Radeon R9 270X

Graphics Card

Sep 2012
Release Date
Oct 2013
GeForce 600
Generation
Volcanic Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16

Clock Speeds

980 MHz
Base Clock
1000 MHz
1032 MHz
Boost Clock
1050 MHz
1502 MHz
Memory Clock
1400 MHz

Memory

2GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
192bit
Memory Bus
256bit
144.2GB/s
Bandwidth
179.2GB/s

Render Config

-
Compute Units
20
-
-
-
960
Shading Units
1280
80
TMUs
80
24
ROPs
32
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
16 KB (per CU)
384 KB
L2 Cache
512 KB
-
-
-

Theoretical Performance

20.64 GPixel/s
Pixel Rate
33.60 GPixel/s
82.56 GTexel/s
Texture Rate
84.00 GTexel/s
-
-
-
1.981 TFLOPS
FP32 (float)
2.688 TFLOPS
82.56 GFLOPS
FP64 (double)
168.0 GFLOPS

Board Design

140W
TDP
180W
300 W
Suggested PSU
450 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
2x 6-pin

Graphics Processor

GK106
GPU Name
Curacao
GK106-400-A1
GPU Variant
Curacao XT (215-0848004)
Kepler
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
2.54 billion
Transistors
2.8 billion
221 mm²
Die Size
212 mm²

Graphics Features

12 (11_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
3.0
OpenCL
1.2
1.1
Vulkan
1.2
3.0
CUDA
-
5.1
Shader Model
5.1

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