NVIDIA GeForce GTX 490 vs NVIDIA GeForce GTX 660
We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 490 and 2GB VRAM GeForce GTX 660 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GTX 490 's Advantages
Larger VRAM bandwidth (164.0GB/s vs 144.2GB/s)
NVIDIA GeForce GTX 660 's Advantages
Boost Clock1032MHz
More VRAM (2GB vs 1536GB)
480 additional rendering cores
Lower TDP (140W vs 365W)
Score
Benchmark
FP32 (float)
GeForce GTX 490
1.166 TFLOPS
GeForce GTX 660
+69%
1.981 TFLOPS
Graphics Card
Unknown
Release Date
Sep 2012
GeForce 400
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
980 MHz
-
Boost Clock
1032 MHz
854 MHz
Memory Clock
1502 MHz
Memory
1536MB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
192bit
164.0GB/s
Bandwidth
144.2GB/s
Render Config
-
-
-
15
SM Count
-
480
Shading Units
960
60
TMUs
80
48
ROPs
24
-
-
-
-
-
-
64 KB (per SM)
L1 Cache
16 KB (per SMX)
768 KB
L2 Cache
384 KB
-
-
-
Theoretical Performance
18.24 GPixel/s
Pixel Rate
20.64 GPixel/s
36.48 GTexel/s
Texture Rate
82.56 GTexel/s
-
-
-
1166 GFLOPS
FP32 (float)
1.981 TFLOPS
145.8 GFLOPS
FP64 (double)
82.56 GFLOPS
Board Design
365W
TDP
140W
750 W
Suggested PSU
300 W
3x DVI
1x mini-DisplayPort
Outputs
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
2x 8-pin
Power Connectors
1x 6-pin
Graphics Processor
GF100
GPU Name
GK106
GF100-375-A3
GPU Variant
GK106-400-A1
Fermi
Architecture
Kepler
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
3.1 billion
Transistors
2.54 billion
529 mm²
Die Size
221 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
1.1
OpenCL
3.0
N/A
Vulkan
1.1
2.0
CUDA
3.0
5.1
Shader Model
5.1
