Home GPU Comparison NVIDIA GeForce GTX 660 Rev. 2 vs AMD Radeon Sky 900

NVIDIA GeForce GTX 660 Rev. 2 vs AMD Radeon Sky 900

NVIDIA GeForce GTX 660 Rev. 2
VS
AMD Radeon Sky 900
NVIDIA GeForce GTX 660 Rev. 2
AMD Radeon Sky 900
We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Rev. 2 and 3GB VRAM Radeon Sky 900 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 Rev. 2 's Advantages
Released 1 years and 6 months late
Boost Clock has increased by 9% (1032MHz vs 950MHz)
Lower TDP (140W vs 300W)
AMD Radeon Sky 900 's Advantages
More VRAM (3GB vs 2GB)
Larger VRAM bandwidth (240.0GB/s vs 144.2GB/s)
832 additional rendering cores

Score

Benchmark

FP32 (float)
GeForce GTX 660 Rev. 2
1.981 TFLOPS
Radeon Sky 900 +71%
3.405 TFLOPS
GeForce GTX 660 Rev. 2
VS
Radeon Sky 900

Graphics Card

Sep 2014
Release Date
Mar 2013
GeForce 600
Generation
Radeon Sky
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16

Clock Speeds

980 MHz
Base Clock
825 MHz
1032 MHz
Boost Clock
950 MHz
1502 MHz
Memory Clock
1250 MHz

Memory

2GB
Memory Size
3GB
GDDR5
Memory Type
GDDR5
192bit
Memory Bus
384bit
144.2GB/s
Bandwidth
240.0GB/s

Render Config

-
Compute Units
28
-
-
-
960
Shading Units
1792
80
TMUs
112
24
ROPs
32
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
16 KB (per CU)
384 KB
L2 Cache
768 KB
-
-
-

Theoretical Performance

20.64 GPixel/s
Pixel Rate
30.40 GPixel/s
82.56 GTexel/s
Texture Rate
106.4 GTexel/s
-
-
-
1.981 TFLOPS
FP32 (float)
3.405 TFLOPS
82.56 GFLOPS
FP64 (double)
851.2 GFLOPS

Board Design

140W
TDP
300W
300 W
Suggested PSU
700 W
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
1x DVI 1x mini-DisplayPort 1.2
1x 6-pin
Power Connectors
2x 8-pin

Graphics Processor

GK104
GPU Name
Tahiti
-
GPU Variant
Orthrus
Kepler
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
3.54 billion
Transistors
4.313 billion
294 mm²
Die Size
352 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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